App Overview

Quill - Todo list icon

Quill - Todo list

元吉 李 · Productivity

Manage your todos with Widget in Today View

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.7
23 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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A product spec, screen plans, and build steps for your coding agent.

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What's included18 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 Quill - Todo list: 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

Add advanced project tracking and collaboration features.

Assumption to check: Limited project management features compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Implement recurring task capabilities.

Assumption to check: No recurring tasks feature

Validate with people who use this workflow before building.

Hypothesis 3

Allow users to customize task appearance and organization.

Assumption to check: Limited customization options for tasks

Validate with people who use this workflow before building.

Hypothesis 4

Include a calendar view for better task scheduling.

Assumption to check: No built-in calendar view

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

Manage your todos with Widget in Today View # Features - The phone does not need to be unlocked, you can directly view, add, and edit each of your little inspirations in Today View. - Lightweight, efficient, convenient, no honors, just to improve your living efficiency - On the road, during class, at work, just getting up, you can quickly record your flashes every moment. - Support Dark Mode, comfortable use at night. - Support Cloud synchronization, easy synchronize across your multiple devices. # What’s difference from other Apps - Even if there’s some app similar “to do list” , but none of them focus on Today Widget - To do list should be easy and simple, so you don't need to waste your time to open or find the the app - All operating is smooth and efficient, without other element to disturb your mind or idea # How to use - 3D Touch press to add the app widget to the `Today View` - Click + to new a task in widget, click task to edit, long press to preview, and check to complete task - More tips to see app default init item or video introduction Help me improve translation and provide better localization, please contact : [email protected] If the functional suggestions and usage questions, please leave a message, thank you n (* ≧▽≦ *) n. Special thanks to Alex Chrisakis from Athens, Greece for the Greek translation.

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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.

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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.