App Overview

Rep Timer icon

Rep Timer

pkclSoft · Health & Fitness

Rep Timer is the timer you've been looking for! Rep Timer provides a simple, elegant way to time your holds without the need to look at your iPhone or Apple Watch

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.6
27 ratings · Top 15%

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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Build Kit

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

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What's included17 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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Quick prompt

> SELECT BUILD PLATFORM:

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

// RORK SYSTEM PROMPT
Rork plan preview for Rep Timer: map the core Health & Fitness workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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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.

Hypothesis 1

Implement a multi-exercise tracking feature.

Assumption to check: Users often find it difficult to track multiple exercises at once.

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to create custom workout templates.

Assumption to check: Limited customization options for timers and workouts.

Validate with people who use this workflow before building.

Hypothesis 3

Consider extending the free trial period.

Assumption to check: Paywall appears too soon, limiting trial experience.

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a community feature for users to share their workouts.

Assumption to check: Lack of social features for sharing achievements.

Validate with people who use this workflow before building.

App evidence

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

App Store description

Rep Timer is the timer you've been looking for! Rep Timer provides a simple, elegant way to time your holds without the need to look at your iPhone or Apple Watch. Just listen for the tone, or the tap on your wrist! And if you do look at it, it's beautiful and clear, providing a clear and elegant visualisation of the hold, and rests. It's awesome! Need to change settings? Easy! Change them on one device, and they are conveniently and automatically shared to your paired device (in either direction!). You can even save those settings as shortcuts. Have multiple workouts? Easy, just create a shortcut for each one! Swipe left and tap! Off you go! And if the app is open on both paired devices, starting your activity on one is automatically synced to the other! Don't have an Apple Watch? No worries, just use Rep Timer on your iPhone, and it will provide audible prompts, or taps (on a wooden table is awesome) to communicate. What you see is what you get. Do you want more? Let us know, and we'll look at adding in more features over time. If you're sick of ad supported apps, in-app purchases, or subscriptions, and you just want a simple timer that does what you need it to do, then Rep Timer is the app you're looking for. Rep Timer records any activities with HealthKit, so they count to your daily totals! I wrote Rep Timer because I've recently been given a set of daily exercises to do at home, and whilst I love Apples Workout app, it was a pain when I'm in a 30 second hold, that I couldn't look at my watch to know when it was time to have a break. Rep Timer lets me go into a hold, and just relax into it. When the tap comes, I know it's time to rest, and I know that Rep Timer will let me know when to start the next hold. I've built Rep Timer for my simple needs, and I'm sure that many people will appreciate a tool that is simple to use without all the fuss and bother of AI and spam generating subscriptions that just want their data.  Sometimes when all you have is a nail, a hammer is all you need. Rep Timer doesn't share or collect any data outside what you permit it to store in your own HealthKit on your devices.

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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
React Native
Expo
Zustand
React Navigation
Axios
React Native Reanimated
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.