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.
App Overview
MileMint - Mileage & Expenses
MileMint keeps mileage, gig shifts, vehicle expenses, receipts, and service reminders in one private log on your iPhone — no account or MileMint server required.
$4.99
PRICE
$4.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet
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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
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Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
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.
Differentiate and validate
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for MileMint - Mileage & Expenses: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
MileMint keeps mileage, gig shifts, vehicle expenses, receipts, and service reminders in one private log on your iPhone — no account or MileMint server required. AUTOMATIC MILEAGE TRACKING Record driving trips automatically in the background. Motion helps MileMint start precise location while you’re driving and reduce unnecessary GPS use. Pause tracking anytime, classify trips as business or personal, add purpose and platform details, or enter a missed trip manually. GIG SHIFT TRACKING Driving for rideshare or delivery? Start a shift, select one or more gig platforms, and record pickup, dropoff, personal-mile, and odometer markers alongside your tracked route. VEHICLE EXPENSES Keep each expense with the vehicle it belongs to. Log fuel fill-ups, maintenance, repairs, vendors, odometer readings, registration, insurance, and finance costs. Review fuel economy, service history, vehicle spending, and cost per mile. SERVICE & DEADLINE REMINDERS Stay ahead of recurring maintenance with mileage- or time-based schedules. Set reminders for inspections, registration, emissions, insurance renewals, and vehicle-tax deadlines. Mark a vehicle serviced to update its schedule and record the completed maintenance, including DIY work. ON-DEVICE RECEIPT SCANNING Scan receipts using Apple’s on-device text recognition, review the extracted details, or enter records manually. Receipt images and recognized text are not sent to MileMint. REPORTS & EXPORTS Review mileage and expense summaries, cost per mile, spending trends, and vendor analysis. Export CSV files or generate a PDF to share with your accountant. Standard-mileage estimates use the supported IRS rate for each trip date. PRIVATE BY DESIGN No account. No sign-in. No MileMint server. No analytics, tracking, or ads. Your records are stored locally on your device. Optional iCloud backup saves a copy to your private iCloud Drive; MileMint cannot access it. Optional Address Lookup uses Apple’s geocoding service to turn trip coordinates into place labels. MILEMINT MileMint is a $4.99 paid App Store download. One purchase. Full access. No subscription, no trial, and no in-app paywall. Restore Purchases is available in the app if you reinstall. MileMint provides organizational tools and estimates, not tax, legal, accounting, or financial advice. Use its reports as supporting records and review them with a qualified professional. Terms of Use (EULA): https://milemint.app/terms Privacy Policy: https://milemint.app/privacy
Written user reviews are not shown here. Check current App Store reviews >
Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
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
Implement automatic trip detection using GPS.
Assumption to check: Users often find mileage tracking tedious and error-prone.
Validate with people who use this workflow before building.
Hypothesis 2
Use AI for automatic categorization of expenses.
Assumption to check: Expense categorization can be confusing.
Validate with people who use this workflow before building.
Hypothesis 3
Add data visualization features like charts and summaries.
Assumption to check: Users want better visual reports of their expenses and trips.
Validate with people who use this workflow before building.
Hypothesis 4
Implement push notifications for reminders.
Assumption to check: Lack of reminders for logging trips and expenses.
Validate with people who use this workflow before building.
Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
SUGGESTED BUILD STACK
React Native
Expo
Supabase
Zustand
React Navigation
React Native Paper
BUILD KIT DIFFICULTY
Not assessed in a Build Kit yet.
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.
