# flex vs Palette Monster

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.

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.

## The numbers

| Metric | flex | Palette Monster |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 2 months |
| Size | 18 MB | 8 MB |
| Requires iOS | **15.1** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Guilherme Ferraz](https://appshunter.io/developer/1623504048) | [Jan Gorman](https://appshunter.io/developer/562760408) |

## What reviewers say

### flex

[App page](https://appshunter.io/ios/app/flex-1-learn-tailwind/id6742805433)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Palette Monster

[App page](https://appshunter.io/ios/app/palette-monster/id6759219202)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | one-time |


## Frequently asked questions

### Is flex free?

flex is free to download, with no in-app purchases.

### Is Palette Monster free?

Palette Monster is free to download, with in-app purchases available.

### Do flex or Palette Monster have ads?

Neither flex nor Palette Monster shows ads.

### Which is updated more often, flex or Palette Monster?

flex ships an update every 5 days, and Palette Monster every 2 months. Most recently, flex was updated on September 22, 2026 and Palette Monster on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*