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.
App Overview
TaskFlux
TaskFlux - Timer, Todos & Random Numbers
$0.99
PRICE
$0.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
2 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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included16 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
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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Free quick prompt For a smaller starting point
Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for TaskFlux: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
TaskFlux - Timer, Todos & Random Numbers Stay focused, organized, and add a spark of randomness to your day with TaskFlux - the ultimate productivity companion. What makes TaskFlux special? Smart Timer System - Flexible timer options from 15 seconds to 60 minutes - Live Activities support - see your countdown in Dynamic Island and Lock Screen - Visual countdown with progress circles and emergency alerts for final seconds - Background notifications keep you on track even when the app is closed Intelligent Todo Management - Create and manage your tasks with ease - Pick Random Todo feature to break decision paralysis - Star system to highlight your current focus - Widget integration shows your progress at a glance Random Number Generator - Generate lucky numbers from 1 to any maximum you set - Satisfying dice-rolling animation with haptic feedback - Perfect for making decisions, games, or just adding spontaneity Seamless Integration - Beautiful home screen widgets with quick actions - Deep linking between features for fluid navigation - Haptic feedback throughout for a premium feel - Clean, modern design that works great on iPhone and iPad Perfect for: - Students timing study sessions and managing assignments - Professionals using Pomodoro technique and task prioritization - Anyone who needs help making decisions or staying organized - Productivity enthusiasts who love well-designed, functional apps Key Features: - Multiple timer presets (15s, 30s, 1m, 5m, 10m, 25m, 60m, and more) - Live Activities and Dynamic Island support - Interactive home screen widgets - Random task selection to overcome choice paralysis - Customizable random number ranges - Haptic feedback for enhanced user experience - Background timer notifications - Clean, distraction-free interface Download TaskFlux today and transform the way you manage time, tasks, and decisions! Requires iOS 16.0 or later. Live Activities require iOS 16.1 or later. Some features may vary by device.
Written user reviews are not shown here. Check current App Store reviews >
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
Focus on simplicity and minimalism with essential features.
Assumption to check: Users often find task management apps overwhelming with too many features.
Validate with people who use this workflow before building.
Hypothesis 2
Ensure reliable and easy calendar synchronization.
Assumption to check: Syncing issues with calendars can frustrate users.
Validate with people who use this workflow before building.
Hypothesis 3
Implement a straightforward priority system with visual indicators.
Assumption to check: Users may struggle to prioritize tasks effectively.
Validate with people who use this workflow before building.
Hypothesis 4
Offer themes and project colors for better personalization.
Assumption to check: Limited customization options can deter users.
Validate with people who use this workflow before building.
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
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date-fns
react-native-paper
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.
