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.
Designed for professionals who bill by the hour, this app helps lawyers, accountants, consultants, engineers, architects, and other professionals easily capture their time
$1.99 · 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.
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.
Designed for professionals who bill by the hour, this app helps lawyers, accountants, consultants, engineers, architects, and other professionals easily capture their time. Clear elapsed-time displays and billable decimals help you keep an accurate record while the details are still fresh. Billable Timer keeps four timers in view so you can capture your work as it happens. Start, pause, or switch assignments with one tap, then save your time to a daily Timesheet for export to your actual billing system. Case Study: Imagine that you are drafting a lengthy work product when a client calls. Forty minutes later, you are interrupted by an urgent assignment. Five minutes later, you are interrupted by a phone call. You started timing the original assignment, but now you're left reconstructing which minutes belong to which project. With Billable Timer, all you would have to do is tap another timer when the interrupting assignments begin. Your previous timer pauses automatically, and the new timer begins. Return to the first assignment when you're ready with one tap. Each assignment keeps its own time, so switching tasks is incredibly easy. FOUR TIMERS, ONE CLEAR VIEW • Keep up to four assignments visible simultaneously, each with its own work name, task, and elapsed time. Only one timer runs at a time, so you will never forget to pause an existing timer when switching assignments. Move time to and from your timesheet very easily. BILLABLE TIME WITHOUT THE MENTAL MATH • View hours, minutes, and seconds alongside their billable equivalent. Choose tenths of an hour or quarter-hour increments, then round up, down, or to the nearest increment to match your billing practice. You can also hide the decimals if you want. SAVE YOUR TIME AND PICK UP LATER • Save a timer to your Timesheet to free it for another assignment. Entries are grouped by date, with daily billable-hour totals that make reviewing your work easier. Restore a saved entry to an empty timer if you need to continue an existing timesheet entry. FILL IN THE GAPS • Forgot to start a timer? Add a manual entry using billable hours or elapsed time. Correct the date, work name, task, or duration of an existing entry before exporting. Separate hours, minutes, and seconds fields make adjustments straightforward. Remove individual entries, a day's entries, or the full Timesheet when you need to clear it. BRING YOUR RECORDS INTO YOUR BILLING WORKFLOW • Export a single day or your full Timesheet as a spreadsheet-friendly CSV. You can also share them as plain text through email, Messages, and other compatible apps, making it easy to send your records to your work computer. Exports include the date, work name, task, elapsed time when recorded, and billable time. This makes it easy to enter your captured time into your official billing system. MAKE YOUR TIMERS EASY TO RECOGNIZE • Choose Case, Matter, File, Project, Client, or Job to match the language of your work. Give each timer its own background color and choose from five patterns or a solid background. Distinct appearances help you find the right assignment at a glance. ADD A LITTLE FUN COMPANY • Work can get lonely, so turn on the optional "Animal Companion" mode to bring illustrated offices and fun animated animals to your timers. They type while you work, sleep when paused, and occasionally do something unexpected. Choose from ten animals with two styles each to give your workday a little personality. Animals include: frog, raccoon, owl, fox, bunny, moose, dog, cat, bear, and lizard. KEEP YOUR PLACE BETWEEN SESSIONS • Saved entries and timer state stay on your device between launches. A running timer accounts for elapsed time while the app is closed or when you take a phone call, so reopening it preserves your place. You can keep the screen awake to leave your timers visible while you work or allow automatic locking in Settings. ***NO IN-APP PURCHASES REQUIRED! ALL FEATURES ARE INCLUDED IN THE PRICE OF THE APP!***
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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.
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.