App Overview

ChalkTimerPRO icon

ChalkTimerPRO

Kristo Designs LLC (US) · Productivity

Take the stress out of warm‑up and competition timing.

$5.99

PRICE
$5.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
5.0
4 ratings · Top 5%

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 included15 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 ChalkTimerPRO: map the core Productivity 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

Full offline with background sync

Assumption to check: No offline mode

Validate with people who use this workflow before building.

Hypothesis 2

Real-time sync with conflict resolution UI

Assumption to check: Sync issues

Validate with people who use this workflow before building.

Hypothesis 3

Minimal design, progressive feature disclosure

Assumption to check: Feature bloat

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

Take the stress out of warm‑up and competition timing. ChalkTimer is the precision timing app built for gymnastics competitions. Designed by coaches and meet directors, it follows USA Gymnastics (USAG) Rules & Policies to deliver automatic, rule‑compliant warm‑up timing—no spreadsheets, no volunteers, no stress. And now, ChalkTimer goes even further with fully functional competition timing built right in. Every event. Every scenario. Every timing rule handled automatically. Included in the new Competition Timing Suite: • All event timers for every apparatus • Fall timers for accurate, rule‑compliant deductions • Bump/Touch timers for athlete readiness and equipment adjustments • General stopwatch for flexible timing needs across the meet Whether you’re coaching, judging, or running the meet, ChalkTimer keeps your event moving with clarity, fairness, and confidence. --- For Coaches: More Time to Coach, Less Time on the Clock Coaches shouldn’t be juggling stopwatches or second‑guessing timing rules. ChalkTimer handles the math and the countdowns so you can focus on your athletes. • Instantly calculates warm‑up times by level • Visual and audio cues keep everyone on track • Ensures fairness across all rotations • Works on any device—no setup headaches • Lets you coach without watching the clock --- For Meet Directors: Professional Timing Without Extra Staff Running a meet is complex—timing shouldn’t be. ChalkTimer eliminates the need for volunteer timers and manual calculations, giving you a polished, automated solution. • Supports over 144 USAG‑compliant timing combinations • Custom time override for unique formats • Keeps sessions on schedule and transitions smooth • Works offline—no WiFi, no problem (PRO version required) • Projects cleanly to displays or judge panels • Makes your meet look and run like a championship --- Key Features That Set ChalkTimer Apart • Dynamic time calculation by level and athlete count • Audio and visual alerts for seamless transitions • One‑tap reset between rotations • Flexible display modes for any setup • Offline reliability—built for real‑world gym conditions (PRO version required) • Intuitive interface for fast, frustration‑free use --- Built by Gymnastics Pros, for the Gymnastics World ChalkTimer was born from the chaos of real meets. Created by experienced coaches and meet directors, it’s engineered to solve the exact problems you face on competition day. From small invitationals to large‑scale events, ChalkTimer brings order, accuracy, and peace of mind. --- Why ChalkTimer Wins • Trusted USAG rule compliance • Saves time, staff, and sanity • Elevates your meet’s professionalism • Keeps athletes, coaches, and judges in sync • Designed with the gymnastics community in mind --- Run your meet like clockwork—download ChalkTimer today. Visit https://chalktimegymnastics.com for more details.

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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
Supabase
Expo
RevenueCat
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.