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.
Tympo is a workout timer built for people who take training seriously
$5.99
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.
Your first Build Kit is free with a verified email.
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.
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Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Tympo is a workout timer built for people who take training seriously. Build custom workouts from scratch, use ready-made templates, and let Tympo keep you on pace — every rep, every set, every session. BUILD YOUR PERFECT WORKOUT Create fully custom workouts with any combination of exercises and rest periods. Set exact durations for each item, add as many exercises as you need, and arrange them in any order. USE TEMPLATES TO START FAST Choose from a library of pre-built Circuit and HIIT workouts across multiple categories and difficulty levels. Pick a template, customise it to suit you, then save and run it. TIMER THAT WORKS YOUR WAY Run each workout with a clear, full-screen timer. Switch between count-down and count-up display depending on how you prefer to track your effort. AUTO-PROGRESSION Set Tympo to automatically increase exercise durations on a schedule — fixed seconds or a percentage increase — so your workouts get harder as you get stronger. No manual editing required. CAMERA MIRROR Enable the live camera feed during your workout to check your form in real-time without switching apps. SYNC ACROSS YOUR DEVICES Upload and download your workouts between all your Apple devices using iCloud. One workout library, everywhere you train. ONE-TIME PAYMENT — FOREVER No subscription. Pay once, use Tympo forever on all your devices with the same Apple ID. 7-DAY FREE TRIAL Try everything before you decide. No payment required during the trial.
Written user reviews are not shown here. Check current App Store reviews >
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.
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.
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.