# Perfish vs Flex

The clearest difference is in-app purchases: Perfish at none against Flex's 2. Perfish also leads on iOS requirement (15.6 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Flex sells 2 in-app purchases, starting at $6.99 per month. Perfish asks for nothing beyond the download.

Perfish ships an update every 3 weeks, Flex monthly. The most recent releases landed on September 24, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Perfish | Flex |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 85 MB | 53 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Langia IT Solutions AB](https://appshunter.io/developer/1453700711) | [David Kelen](https://appshunter.io/developer/1796712157) |

## What reviewers say

### Perfish

[App page](https://appshunter.io/ios/app/perfish/id1453700712)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### Flex

[App page](https://appshunter.io/ios/app/flex-redefine-strength/id6744560828)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flex - Emerald \| Monthly | $6.99 | per month |
| Flex - Emerald \| Yearly | $69.99 | per year |


## Frequently asked questions

### Is Perfish free?

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

### Is Flex free?

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

### Do Perfish or Flex have ads?

Neither Perfish nor Flex shows ads.

### Which is updated more often, Perfish or Flex?

Perfish ships an update every 3 weeks, and Flex monthly. Most recently, Perfish was updated on September 24, 2026 and Flex on September 27, 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.*