Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
Put your receipts on autopilot
Free · In-app purchases
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
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Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Terrapin: Receipt Autopilot: map the core Finance workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Assumption to check: Users find it time-consuming to manually categorize receipts.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited integration with financial accounts.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: In-app purchase confusion regarding tiers.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Occasional scanning errors with receipts.
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Put your receipts on autopilot. Terrapin finds them from email, photos, and bank transactions - then organises everything for tax time. No manual entry. No shoebox of paper. Just clean, categorised expenses ready to export to your accountant. **How it works** Connect your email, photo library, and bank accounts. Terrapin runs on autopilot - scanning for receipts, matching them to transactions, and categorising them as business or personal. Set rules once and they apply to every receipt going forward. When tax season arrives, export a complete package - summary report, itemised CSV, and receipt images - direct to your CPA in minutes. **What Terrapin does** - Finds receipts from Gmail, Outlook, Apple Mail, and your photo library - Matches receipts to bank transactions automatically - Categorises expenses as business or personal - Tracks mileage with automatic trip detection - Lets you set classification rules that stick - Exports PDF reports, CSV files, and receipt images for your accountant - Shows clear totals by category so you always know where you stand **Built for freelancers and small businesses** If you're self-employed, a 1099 contractor, or running a small business, Terrapin replaces the spreadsheet, the folder of photos, and the end-of-year panic. Your receipts are on autopilot - organised continuously, not just at tax time. **Your accountant will thank you** Share a clean, audit-ready export with your CPA. Summary report, categorised expenses, and receipt images - all in one download. No more chasing clients for missing documentation. **Security you can verify** Terrapin is SOC 2 Type II certified - independently audited for security, availability, and confidentiality. We use read-only access to every connected source, AES-256 encryption at rest, and TLS 1.3 in transit. No passwords to steal. No data sold. Full report available at tryterrapin.com/trust. Download Terrapin. Put your receipts on autopilot. SUBSCRIPTION INFORMATION Terrapin offers the following auto-renewing annual subscriptions: - 1-Year Discovery: $13/month, billed annually - 2-Year Discovery: $17/month, billed annually Prices are in USD. Pricing varies by region (GBP and CAD also available). Payment will be charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless auto-renewal is turned off at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription and turn off auto-renewal at any time by going to your App Store Account Settings after purchase. No cancellation of the current subscription is allowed during the active subscription period. Privacy Policy: https://www.tryterrapin.com/privacy Terms of Use: https://www.tryterrapin.com/terms
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.