App Overview

Coffret icon

Coffret

MEDFORHOME LTD · Finance

Coffret is an expense tracker for tracking personal and business spending

$19.99

PRICE
$19.99
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.

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A product spec, screen plans, and build steps for your coding agent.

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What's included16 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

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.

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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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

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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.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Coffret is an expense tracker for tracking personal and business spending. Everything stays on your iPhone. There is no account to create, no cloud to sync with, and nothing to sign up for. Most money apps want your bank credentials and a monthly subscription. Coffret asks for neither. You enter what you spend, and it stays in an encrypted database on your device — where you can back it up yourself, and where nobody else can reach it. BUSINESS AND PERSONAL, ONE APP Every transaction is marked business or personal. Switch the filter at the top of any screen to see one, the other, or both. If you only track personal spending, turn the business layer off and every tax field disappears. LOG AN EXPENSE IN SECONDS A keypad-first entry screen with a calculator built in, categories ordered by what you actually use, and sensible defaults for wallet and date. Record expenses, income and transfers between accounts. BUDGETS THAT WARN YOU EARLY Set monthly budgets by category and see how much is left, how many days remain, and where the month will land at your current pace — before you go over, not after. BUILT FOR SELF-EMPLOYED WORK - Flag expenses as tax-deductible, including partial percentages for mixed use - Track sales tax and VAT separately on business transactions - Set aside a percentage of every payment for tax and watch the reserve build - Group income and expenses by client project to see real profit per job - Log mileage at your own rate - Export a complete bundle for your accountant: ledger, deductible summary, mileage and receipt images REPORTS THAT ANSWER SOMETHING Spend by category with month-over-month movement, income against expenses over time, a daily spending heatmap, and per-project margins. RECEIPTS AND RECURRING Attach receipt photos to any transaction, stored on your device. Set up rent, software subscriptions and retainers once and let them post on schedule. YOUR BACKUP IS YOURS Because there is no server, the backup file is the safety net — and it belongs to you. Export a full backup whenever you want, or set it to run weekly. Restore shows you exactly what is in a file before anything is written. Export your ledger as CSV or a PDF report at any time. LOCKED DOWN The database is encrypted at rest with SQLCipher. Lock the app behind Face ID, Touch ID or a PIN, and hide amounts in the app switcher. WHAT COFFRET DOES NOT DO It does not connect to your bank. It does not sync between devices. It does not run ads, collect analytics, or make network requests of any kind — it behaves identically in airplane mode. These are deliberate choices, not missing features. Terms & Conditions: https://coffret.myoptimizeinc.com/terms/ Privacy Policy: https://coffret.myoptimizeinc.com/privacy/

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Screenshots

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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
BUILD KIT DIFFICULTY
Intermediate

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.