App Overview

Group Star Charts icon

Group Star Charts

Geoff Hackworth · Lifestyle

Group Star Charts is an effective way to encourage good behavior using a simple and clear system of positive feedback based on awarding stars.

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.4
18 ratings · Top 30%

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 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 Group Star Charts: map the core Lifestyle 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

Allow users to customize colors, styles, and more.

Assumption to check: Limited customization options for star charts

Validate with people who use this workflow before building.

Hypothesis 2

Provide clear information on what features are premium.

Assumption to check: In-app purchases may be unclear

Validate with people who use this workflow before building.

Hypothesis 3

Implement a guided onboarding process.

Assumption to check: Navigation can be confusing for new users

Validate with people who use this workflow before building.

Hypothesis 4

Add features to share charts with friends and receive feedback.

Assumption to check: Lack of community features

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

Group Star Charts is an effective way to encourage good behavior using a simple and clear system of positive feedback based on awarding stars. The app's appearance and user interface is deliberately simple to make it easy to use and understandable by children of all ages. There is a row for each child which clearly shows the number of stars they have. Tap a row to add a star (up to 99 or a chart-specific target, if required). It's that easy. Tips to get the most out of a Group Star Charts: • Reward good behavior immediately so your child associates the awarding of a star with their behavior. • Don't take stars away. Rewarding positive behavior is more effective than punishing bad behavior. • For older children, setting a target number of stars to reach and sorting by star count can encourage healthy competition. • Create multiple charts for different behaviours or targets. • It's great for parents but can also be used by teachers or club leaders to track rewards for multiple groups of children. • Can also be used for adults, e.g. tracking scores while playing a board game. REVIEWS ======= ***** "Everything I have found until this app have been either overly-complicated or too narrow in focus (just specializing in chores for instance). The multiple chart option allows me to customize stars/points based on any category of work or behavior that I want and the simple interface makes on-the-go tracking a snap." - Androshay, USA. ***** "I use this app for several large group classes I teach & it's been insanely popular with the kids (ages 3-7). They BEG to be quizzed on material we've covered so they can earn 'points'! Love the 'bing' sound each point makes when you award them, which can be heard across the room & really excites everyone. :). Recent update allows for multiple charts, so I can use them for different classes. Awesome!" — Smokdrogi, USA. Please mail [email protected] or see https://hacknicity.com/groupstarcharts for more information.

Written user reviews are not shown here. Check current App Store reviews >

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
Supabase
Zustand
React Navigation
React Native Share
BUILD KIT DIFFICULTY
Starter

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.