Useful!
Great App! It runs quickly and smoothly. No more guessing colors when painting a photo onto canvas.
Archived App (Last seen on 21 Jun 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
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About
Create, save, and edit vibrant color palettes with a unique wheel interface. Generate palettes from images using advanced algorithms or customize existing ones with intuitive tools. Organize your creations in a filesystem-like manager.
✓Wheel-based color palette creation
✓Perceptual color similarity/distinctness adjustment
✓Simultaneous color modification
✓Image-based palette generation (kmeans, farthest-first)
✓Filesystem-like palette storage
✓Customizable interface colors and backgrounds
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What's New in Rainbow Toolbox
2.0.2
August 22, 2024
Rebranded the app from "Image to Color Palette" to "Rainbow Toolbox" to reflect new functionality. New functionality includes: 1. The ability to save and restore palettes in a filesystem-like interface replete with search, folder creation, renaming, copy, delete, and sorting buttons. 2. Unique, wheel-based representation of color palettes with 3 different tools for editing them. 3. A significantly less flat-looking interface, and the ability to set custom backgrounds, on top of four interface colors. Note: no features have been removed! If you had the previous version of this app, whatever colors you had set as the interface colors previously have been saved to the Rucksack in a palette named "settings". Technical details: changed development environment from React Native to the Godot Game Engine, for greater flexibility.
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FAQ
What is Rainbow Toolbox?
Rainbow Toolbox is a free application for iOS devices that allows users to create, edit, and manage color palettes using a unique wheel-based interface and advanced color manipulation tools.
How does Rainbow Toolbox generate palettes from images?
Rainbow Toolbox uses two distinct algorithms: kmeans, which balances common and distinct colors, and farthest-first-traversal, which prioritizes distinct colors from the image.
Can I organize my color palettes in Rainbow Toolbox?
Yes, Rainbow Toolbox features a 'Rucksack' tool that stores palettes in a filesystem-like interface, allowing for search, folder creation, renaming, copying, deletion, and sorting.
Does Rainbow Toolbox have ads?
No, Rainbow Toolbox is ad-free, providing an uninterrupted user experience for creating and managing color palettes.
What devices does Rainbow Toolbox support?
Rainbow Toolbox is available for iPhone, iPad, and iPod touch devices.
How often is Rainbow Toolbox updated?
The latest version, 2.0.2, was released on August 22, 2024, indicating active development and regular updates.
What is the age rating for Rainbow Toolbox?
Rainbow Toolbox has an age rating of 4+, making it suitable for a wide range of users.
How can I adjust the colors in a palette with Rainbow Toolbox?
Rainbow Toolbox offers tools like 'Caliper' to make colors more perceptually similar or distinct, and 'Balance' to modify all colors simultaneously from a single color picker.
