App Overview

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Compare

Amsterdamsoft LLC · Developer Tools

A tool needed by all developers, AmSo Compare lets you perform side-by-side comparison and merge of your directories, files, and their content

Free · In-app purchases

PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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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Build Kit

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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 Compare: map the core Developer Tools 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 comparison types and analytics features.

Assumption to check: Limited functionality for complex comparisons

Validate with people who use this workflow before building.

Hypothesis 2

Focus on a modern, clean UI with intuitive elements.

Assumption to check: Poor user interface and visual design

Validate with people who use this workflow before building.

Hypothesis 3

Implement export options to PDF or share results via social media.

Assumption to check: No export or share functionality

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a history feature to track past comparisons and user interactions.

Assumption to check: Lack of user feedback or history tracking

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

A tool needed by all developers, AmSo Compare lets you perform side-by-side comparison and merge of your directories, files, and their content. It lets you see changes down to the character level and copy changes between two or more different versions of a file as needed. It allows for text wrapping and can ignore file formatting, forgiving differences between line wraps, indentation, line lengths and other programmer coding preferences such as where they put the opening braces after an if statement. It features a powerful inline editor for text and hex files, configurable rules based comparison, and supports N-Way comparisons and automated operations such as code merge, and file sync/update/mirroring. This well designed application features a clean interface with easy to understand controls and icons. Just select or drag-and-drop in two or more items onto it and you're ready to compare and merge. It also remembers all recent items for each side so you can perform repeated comparisons easily. COMPARISONS: • Folder/Text Compare • N-Way Folder/Text Compare • N-Way Folder/Text Merge • N-Way Folder Sync • Hex Compare • Image Compare • Structured (XML, JSON) Compare • Time Machine Compare (non-APFS) FEATURES: • Side by side comparison with overview • N-Way folder comparison feature auto-alignment of files • N-Way text comparison feature N-way operations • Multiple viewers such as Text (source code), Hex, and image comparison • Inline editing or line by line operations within both Text and Hex comparisons • Filtering of lines based on similarity (same, different) or include/exclude based on plain text or RegEx comparison • Inline display of bytes as UTF8, ASCII, Integer and Decimal point data, (little and big endian) • Merge multiple sets of changes in folder structures or text files. • 3-Way folder merge with ancestor in the center and N-Way folder merge with ancestor in the side • Manual copy, and copy to Ancestor/Branches operations • Automatic merge, with merge to Ancestor, branches, or a merge folder/file • Detection and pairing of JSON and XML arrays • Configurable comparison rules. NOTES: • N-Way operations are generally limited by display area. • Hex comparison is only suitable for binary files that are similar to each other. • AmSo Compare works within the MacOS sandbox giving you full access control. It does not make any network connections. It also minimizes use of third party libraries, significantly reducing chance of exposure to misbehavior by a buggy external libraries.

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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
Expo
Zustand
React Navigation
Axios
React Native Paper
BUILD KIT DIFFICULTY
Advanced

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.