flex vs Palette Monster
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
flex
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flex-1 allows you to practice converting CSS classes to Tailwind CSS. Enter the equivalent Tailwind CSS classes for each given CSS class. Have fun as you practice Tailwind!
Palette Monster
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Palette Monster helps you design and explore modern color palettes in seconds. Create vivid palettes from a base color, fine-tune with controls, and instantly preview values in HEX, HSL, RGB, and OKLCH. Save favorite palettes to your library and export ready-to-use XCAssets color catalogs for Xcode projects.
Screenshots
Verdict
The clearest difference is in-app purchases: flex at none against Palette Monster's 1. flex also leads on update cadence (every 5 days vs every 2 months) and iOS requirement (15.1 vs 26.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Palette Monster sells 1 one-off in-app purchase. flex asks for nothing beyond the download.
flex ships an update every 5 days, Palette Monster every 2 months. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.
| Parameter | flex | Palette Monster |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.1 — better | 26.0 |
| Further details — not scored | ||
| Size | 18 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Guilherme Ferraz | Jan Gorman |
In-app purchases
flex
No in-app purchases
Palette Monster
- Premium$2.99
