TicketSplit

Split expenses and collect UPI payments instantly.

TicketSplit is a group expense and bill-splitting app designed for India, with UPI settlement built into the workflow. It helps flat-sharers, students, teams, and trip groups track shared costs, request payment at settlement time, and reduce the friction and forgetfulness that usually surround reimbursements.

Business Goals

  • Reach 50,000 monthly active users within 6 months of public launch.
  • Achieve 35% month-3 retention among recurring rent-group users within 12 months.
  • Convert at least 20% of active groups into recurring monthly groups by end of year 1.
  • Generate ₹12 to ₹18 ARPU annually from ads and affiliate placements by year 2 without reducing core task completion.
  • Keep settlement-driven conversion from balance view to UPI payment request above 60% within 9 months.

User Goals

  • Let users create a group and start splitting expenses in under 2 minutes.
  • Make settlement possible with one tap that opens a UPI payment request.
  • Allow everyone in a group to view balances from a shareable link, even without the app.
  • Support recurring rent and shared-household groups with monthly reminders.
  • Keep the core expense and settlement experience uncluttered and fast.

Non-Goals

  • Not a full accounting, bookkeeping, or tax filing tool.
  • Not a consumer lending, credit, or escrow product.
  • Not a replacement for bank transfers outside UPI settlement flows.
  • Not a social feed, chat app, or general community platform.

Flatmate Arjun, 27 - Arjun lives in a 3BHK with two roommates in Bengaluru. He pays rent and utility bills monthly and often ends up chasing friends for reimbursements.

Flatmate Arjun, 27

  • As a flatmate, I want to record rent and shared bills once a month, so that I can avoid repeated manual calculation.
  • As a flatmate, I want to trigger a UPI settlement request when balances are due, so that I can collect money without WhatsApp follow-ups.
  • As a flatmate, I want recurring reminders for rent groups, so that no payment cycle is missed.

Trip Organizer Sana, 24 - Sana organizes weekend trips for friends and manages hotels, cabs, and food splits across a temporary group. She needs a fast way to settle up after the trip ends.

Trip Organizer Sana, 24

  • As a trip organizer, I want to add custom-split expenses quickly, so that I can keep the group updated in real time.
  • As a trip organizer, I want a shareable balance link, so that friends can check what they owe without installing the app.
  • As a trip organizer, I want one-tap settlement requests, so that the trip closes cleanly without extra coordination.

Office Ops Nikhil, 31 - Nikhil manages small team lunches and event pooling for a 20-person startup in Pune. He needs a simple tool that works for both planned and ad hoc expenses.

Office Ops Nikhil, 31

  • As an office coordinator, I want to split expenses evenly or by custom shares, so that the math is transparent.
  • As an office coordinator, I want to see who has settled and who has not, so that follow-ups are targeted.
  • As an office coordinator, I want relevant offers surfaced only after expense actions, so that the app remains trustworthy and uncluttered.

Group creation and membership · High priority

  • Users must be able to create and manage groups for recurring or one-off shared expenses.
  • Support group types: flat-share, PG rent, trip, office, event, and custom.
  • Allow invite links via WhatsApp, SMS, and copyable URL.
  • Let members join with phone number verification or shared link access.
  • Support owner and member roles with basic permissions for editing and settling.
  • Show current group status, member list, and active balance summary.

Expense entry and split logic · High priority

  • Users must add expenses quickly and split them evenly or with custom shares.
  • Support amount entry in INR with payer selection and optional note/photo receipt.
  • Allow equal split, exact amounts, percentages, and share counts.
  • Validate that custom split totals match the total expense amount.
  • Auto-calculate balances after every expense edit or deletion.
  • Maintain an audit trail for edits, deletions, and who made the change.

UPI settlement flow · High priority

  • Balances should be convertible into a real UPI payment request with minimal friction.
  • Generate a settlement action that opens a UPI deep link with payee VPA, amount, and note.
  • Support UPI apps commonly used in India, including PhonePe, Google Pay, Paytm, BHIM, and generic UPI intent handling.
  • After returning from the UPI app, let users mark the settlement as completed or pending confirmation.
  • Handle failed deep-link launches gracefully with a fallback copy-to-clipboard UPI URI and instructions.
  • Support partial settlement and update balances accordingly.

Recurring reminders and notifications · Medium priority

  • Recurring groups such as rent should trigger automated reminders and reduce missed payments.
  • Allow monthly recurring schedules with configurable due date and reminder cadence.
  • Send push notifications and optional WhatsApp/SMS reminders before and on due date.
  • Suppress redundant reminders once a settlement is marked complete.
  • Let users snooze reminders for a configurable period.
  • Provide a recurring cycle history for rent groups.

Shareable access and monetization placements · Medium priority

  • Balances should be viewable without app install, while monetization remains limited to non-core surfaces.
  • Generate read-only share links for balance views with optional expiration.
  • Allow guest access to a group's current balance summary without editing permissions.
  • Surface ad and affiliate suggestion cards only on group dashboard, post-settlement, or insights screens.
  • Personalize offers based on group context such as travel, rent, food, or utilities.
  • Ensure no ad units appear on add-expense, split, or settle-up screens.

Fast Onboarding to First Split

  • Open the app and choose Create Group or Join Group.
  • Select a group type such as rent, trip, or office lunch.
  • Add at least one member using phone contacts, invite link, or manual entry.
  • Add the first expense and choose equal or custom split.
  • Tap Settle Up to generate a UPI payment request.
  • Time to first value target: under 2 minutes from app open to first balanced group entry.

1. Create or join a group

  • The user starts with a focused group setup flow optimized for India-first use cases.
  • Pre-fill common group templates like rent and trip to reduce setup time.
  • Require only a group name and one other participant to start.
  • Handle duplicate group names by showing owner and creation date.

2. Add an expense

  • The user records a shared cost with minimal typing and clear validation.
  • Accept amount, payer, category, note, and optional receipt photo.
  • Validate INR formatting and prevent zero or negative amounts.
  • Let the payer be changed after creation only if no settlement has been completed against that entry.

3. Choose split method

  • The user defines how the cost is distributed across members.
  • Support equal, exact, percentage, and shares-based splitting.
  • Show live balance impact before saving.
  • If totals do not match, highlight the mismatch and block save until corrected.

4. Review balances and settle

  • The user sees who owes whom and can trigger a UPI payment request instantly.
  • Show net balances per person and optimal settlement suggestions.
  • Deep link into UPI apps with prefilled amount and note.
  • If the payment app fails to open, provide a copyable URI and retry option.

5. Track completion and reminders

  • Recurring groups stay active through reminders and settlement tracking.
  • Mark settlements as completed, pending, or disputed.
  • Send due-date reminders for recurring groups.
  • After settlement, show a confirmation state and optional next-step offer card only if relevant.

Power Features and Edge Cases

  • Recurring monthly rent cycles with configurable due dates and reminder frequency.
  • Read-only share links for balance viewing without account creation.
  • Receipt attachment and expense history export to CSV.
  • Partial settlement handling and manual balance corrections with audit trail.
  • Multi-group support for users sharing expenses across home, trip, and office contexts.

Trustworthy, Fast, and Uncluttered UI

  • Core flows use large touch targets and one primary action per screen.
  • Use INR currency formatting and local payment-language cues familiar to Indian users.
  • Maintain strong contrast and accessible typography for low-light and budget-device usage.
  • Load balance and group dashboards in under 2 seconds on 4G for the median user.
  • Keep offers visually separated from core actions using subdued native cards and clear labeling.

Arjun shares a flat in Bengaluru and used to keep rent balances in a spreadsheet while chasing roommates on WhatsApp. Every month, the same pattern repeated: calculate totals, send reminders, wait for replies, and still have to ask again for the money.

With TicketSplit, Arjun creates a rent group once, adds the monthly expense in seconds, and the app tracks each person’s balance automatically. When it is time to settle, he taps one button and a UPI payment request opens instantly in the payer’s preferred app.

The result is less awkward follow-up, fewer missed payments, and a predictable monthly habit that keeps the group active. For TicketSplit, that recurring usage creates retention, while context-relevant affiliate offers appear only when users are already thinking about rent, travel, or food.},

User-Centric Metrics

  • 80% of new users create a group and add the first expense within 10 minutes.
  • 60% of active groups use the settle-up flow at least once per month.
  • 95% of UPI settlement requests launch successfully on the first attempt.
  • Average time from opening a group to generating a UPI request stays under 15 seconds.
  • Reduce unresolved balance disputes to under 5% of settled groups.

Business Metrics

  • Reach 10,000 MAU by month 3, 50,000 MAU by month 6, and 150,000 MAU by month 12.
  • Achieve 25% invite-to-join conversion from shared group links by month 6.
  • Keep 30-day retention above 28% overall and above 35% for recurring rent groups by year 1.
  • Generate revenue from non-core placement clicks on at least 8% of eligible sessions by year 2.
  • Reach profitability by year 3 with ad and affiliate revenue covering operating costs.

Technical Metrics

  • 99.9% monthly uptime for core app and API services.
  • P95 app screen load under 2.5 seconds on mid-tier Android devices.
  • UPI deep-link success rate above 95% with monitored fallback coverage.
  • Zero critical security findings in quarterly reviews and pen tests.

Tracking Plan

  • group_created
  • member_invited
  • expense_added
  • split_method_selected
  • balance_viewed
  • settlement_requested
  • upi_deeplink_opened
  • settlement_marked_completed
  • reminder_sent
  • offer_card_clicked

Technical Needs

  • Mobile app built in React Native or Flutter for Android-first delivery with iOS support.
  • Backend API using Node.js with TypeScript or Python FastAPI.
  • PostgreSQL for relational group, expense, balance, and settlement records.
  • Redis for reminder scheduling, rate limiting, and transient session state.
  • Object storage such as AWS S3 for receipt images and export files.
  • Push notification infrastructure using Firebase Cloud Messaging.
  • Event analytics pipeline using Segment or a lightweight internal event collector.

Integration Points

  • UPI intent/deep-link handling with Android and iOS app links.
  • Phone number authentication via OTP provider such as Twilio, MSG91, or Firebase Auth.
  • WhatsApp share links for invites and read-only balance links.
  • SMS and push notification delivery providers for reminders.
  • Optional affiliate feeds or deep links from travel, broadband, furniture, food delivery, and forex partners.

Data Storage & Privacy

  • Store only necessary personal data such as phone number, display name, group membership, and settlement history.
  • Encrypt sensitive data in transit with TLS and at rest using cloud-managed encryption.
  • Provide account deletion, export, and consent management aligned with GDPR and India DPDP expectations.
  • Treat balance links as unlisted, tokenized URLs with expiration and revoke support.
  • Restrict receipt images and note fields from being indexed or publicly exposed.

Scalability & Performance

  • Design balance calculations to be incremental rather than recomputed from scratch on every request.
  • Use queue-based reminder delivery so notification spikes do not affect core API latency.
  • Cache group summaries for frequently viewed groups while keeping settlement writes strongly consistent.
  • Optimize for low-end Android devices and unstable mobile networks with offline-friendly draft states.

Potential Challenges

  • UPI app launch failures can break the settlement promise; mitigate with multi-app intent handling, fallback URIs, and clear retry instructions.
  • Users may mistrust ads in a finance-adjacent app; mitigate by hard-separating monetization from core actions and limiting placements to post-action surfaces.
  • Expense disputes can create support burden; mitigate with edit history, audit trail, and clear settlement state labels.
  • Recurring reminder fatigue could increase churn; mitigate with user-configurable cadence, snooze controls, and suppression after payment.
  • Privacy concerns around shared group links could deter usage; mitigate with tokenized, revocable, time-limited links and read-only access controls.

Team & resourcing - Small team - 2 engineers, 1 designer, 1 part-time PM, 1 QA contractor

Phase 1: MVP foundation · Weeks 1-4

  • User authentication with phone OTP
  • Group creation and invite links
  • Add expense flow with equal and custom splits
  • Live balance calculation per group
  • Basic read-only group view

Phase 2: UPI settlement and reminders · Weeks 5-8

  • UPI deep-link settlement flow
  • Settlement status tracking and partial settlement
  • Recurring rent groups and reminder scheduler
  • Push notifications and SMS fallback
  • Audit trail for edits and deletions

Phase 3: Share links and monetization-safe surfaces · Weeks 9-12

  • Tokenized shareable balance links
  • Guest read-only access
  • Native offer card framework on non-core screens
  • Basic affiliate routing and click tracking
  • Receipt upload and expense history export

Phase 4: Scale and polish · Weeks 13-16

  • Performance tuning for low-end Android devices
  • Analytics dashboards and event instrumentation
  • Abuse prevention and link revocation
  • Accessibility improvements and UI refinement
  • Beta hardening with crash reporting and error monitoring

Paste this into Cursor, Bolt, Lovable, or v0 to start building.

Build a mobile-first India-focused bill-splitting app called TicketSplit.

Core product:
Users create groups for flat-share, PG rent, trips, office lunches, or events; add expenses; split evenly or with custom shares; view balances; and tap Settle Up to open a real UPI payment request via deep link. Include recurring monthly reminders for rent groups and read-only shareable balance links for non-install users. Keep the core expense and settlement flow clean, fast, and free of ads; monetization cards should appear only on non-core screens such as group dashboard, insights, or post-settlement.

Primary screens and flows:
1. Phone OTP login
2. Home dashboard with groups and recent activity
3. Create/join group flow with invite link sharing via WhatsApp/SMS/copy link
4. Group detail screen with balances, members, expenses, reminders, and settlement CTA
5. Add expense modal/screen with payer, amount, note, receipt upload, and split method selector
6. Settle-up flow that generates UPI intent/deep link and tracks completion/pending states
7. Read-only public group balance page via tokenized link
8. Settings for notifications, recurring reminders, export, and account deletion

Data model:
User: id, phoneNumber, displayName, createdAt
Group: id, name, type, ownerId, recurrenceType, dueDate, createdAt, archivedAt
GroupMember: id, groupId, userId, role, joinedAt
Expense: id, groupId, payerId, amountInINR, currency, note, category, receiptUrl, createdBy, createdAt, updatedAt
ExpenseSplit: id, expenseId, userId, shareType, shareValue, amountOwed
Settlement: id, groupId, fromUserId, toUserId, amount, status, upiUri, createdAt, completedAt
InviteLink: id, groupId, token, expiresAt, revokedAt
ReadOnlyLink: id, groupId, token, expiresAt, revokedAt
Reminder: id, groupId, nextRunAt, cadence, enabled
AnalyticsEvent: id, userId, groupId, eventName, properties, createdAt

Technical stack:
Use React Native with TypeScript for the app, Node.js with TypeScript and Express or NestJS for the backend, PostgreSQL for persistence, Redis for job queues and reminders, S3 for receipts, Firebase Cloud Messaging for push notifications, and a lightweight analytics/event pipeline. Use OTP auth via Firebase Auth or MSG91, and deep-link UPI handling for PhonePe, Google Pay, Paytm, BHIM, and generic UPI intents. Include role-based access control, tokenized public links, audit logs, and basic admin tooling.

Build requirements:
Use a clean, trust-focused UI with large touch targets, INR formatting, and strong accessibility. Implement incremental balance calculation, error handling for invalid splits, fallback behavior if UPI app launch fails, and clear settlement states. Seed the app with realistic sample groups for rent and trips. Deliver production-ready code with reusable components, API routes, database schema/migrations, and basic tests for split calculations and settlement flows.

Business Idea

TicketSplit Business Description What It Is TicketSplit is a group-expense and bill-splitting app built specifically for India. Unlike global tools such as Splitwise or Tricount, which only track who owes whom, TicketSplit closes the loop by triggering an actual UPI payment request the moment a group settles up — no separate app-switching, no manual WhatsApp follow-up to collect what you're owed. The Problem It Solves Splitting shared costs is a near-daily reality for millions of Indians — flat-share and PG rent, group trips, office lunches, festival or wedding pooling. Existing tracking apps were built before UPI existed, so even after a balance is calculated, the actual transfer of money still happens manually and gets forgotten, delayed, or disputed. How It Works Create a group for a trip, flat-share, office team, or event. Add expenses and split them evenly or by custom shares. Tap "Settle Up" to trigger a real UPI payment request via deep link — no app-switching. Recurring groups (like rent) get automatic monthly reminders. Anyone in the group can check their balance via a shareable link, even without installing the app. Who It's For Primarily urban students, young professionals, and flat-sharers in India's metro and tier-2 cities — the same audience already using UPI daily for everything else. The initial wedge is flat-share and PG rent-splitting, since rent recurs monthly and builds habitual use faster than one-off trip groups. How It Makes Money The app stays free to use. Revenue comes from ads and affiliate partnerships surfaced at genuinely relevant, high-intent moments — for example, travel and forex offers inside a trip group, furniture or broadband deals inside a rent group, or food delivery offers inside a group that splits meals often. These appear as native suggestion cards, never on the core add-expense or settle-up screens, so the money-tracking experience itself stays uncluttered. Why Now India has one of the largest digital payment bases in the world, with active UPI users estimated in the hundreds of millions and still growing. Because splitting a bill naturally means inviting friends into a group, the product has a built-in, low-cost viral growth loop layered on top of any paid marketing — a distribution advantage that's hard to replicate in most other categories. Competitive Landscape, Briefly Several India-native, UPI-integrated apps have emerged recently, and most compete by being fully free and ad-free. TicketSplit's differentiation has to come from execution quality and from making its ads/affiliate offers feel like a genuine perk rather than clutter — a deliberate design constraint baked into the product from day one, not an afterthought. Where It's Headed The 3-year plan targets roughly 650,000 monthly active users, funded by a ₹1.5 crore seed round, reaching profitability in Year 3 as ad and affiliate revenue per user scales alongside direct partnerships with travel, rental, and food-delivery brands. Full financial projections and the detailed business plan are available as separate documents.

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