App Overview

Overflow :) icon

Overflow :)

Lemonskin · Finance

With Overflow you can create lists

$0.99 · In-app purchases

PRICE
$0.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

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 Overflow :): map the core Finance 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 automatic categorization using AI.

Assumption to check: Poor transaction categorization leading to confusion

Validate with people who use this workflow before building.

Hypothesis 2

Enhance budget tracking with alerts and analytics.

Assumption to check: Limited budget tracking features

Validate with people who use this workflow before building.

Hypothesis 3

Integrate with multiple banks for easier account linking.

Assumption to check: Lack of account linking options

Validate with people who use this workflow before building.

Hypothesis 4

Add features for detecting and managing recurring payments.

Assumption to check: No recurring transaction detection

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

With Overflow you can create lists. Not normal lists - well, yes, also normal lists - but, in particular, complex data structures. An example may be finances: your bank account, the amount of your investment or the value of the properties you own. You can see the total value or access various subcategories to analyze the entries in detail, keeping them divided by topic. Or prepare Christmas gift lists, with related prices, or the checklist of movies to watch, or books to read. And totals can be summed up or calculated separately. You can also plan a trip setting a budget, and checking at any time whether you're respecting it or not. EVERYTHING ON HAND, EVEN THE PAST Everything changes, even your lists. Or bank account. Or the list of Bluray you've loaned to John. But it's also very useful to compare values with those - for example - of one, two, five years ago. Did I earn more money? Did I spend more than I should have? With Overflow, at any time, you can create a "snapshot" of the current situation, so you always have a backup copy in case the cat would have fun with your device. FAR FROM PRYING EYES Overflow is a modular app. This means that it can be easily expanded in the future. One of the first expansions (freely included with the app) lets you protect the most personal data, or all if you prefer. So, those curious friends who take your phone "just to make a quick call" will no longer have your business done. Or, much more important, they will remain safe from less recommendable individuals than curious friends! Your data is safe, and you have full control over everything.

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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
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.