# Fundamentals App vs Swim Performance

The clearest difference is update cadence: Swim Performance at every 3 weeks against Fundamentals App's every 3 months. Fundamentals App's advantage is iOS requirement (13.0 vs 16.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Fundamentals App ships an update every 3 months, Swim Performance every 3 weeks. The most recent releases landed on September 29, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Fundamentals App | Swim Performance |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 189 MB | 100 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Fundamentals Haarlem B.V.](https://appshunter.io/developer/1572406536) | [FITsociety BV (Apps)](https://appshunter.io/developer/1756257213) |

## What reviewers say

### Fundamentals App

[App page](https://appshunter.io/ios/app/fundamentals-app/id6749531651)

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

**In-app purchases:** none


### Swim Performance

[App page](https://appshunter.io/ios/app/swim-performance/id6753800321)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fundamentals App free?

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

### Is Swim Performance free?

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

### Do Fundamentals App or Swim Performance have ads?

Neither Fundamentals App nor Swim Performance shows ads.

### Which is updated more often, Fundamentals App or Swim Performance?

Fundamentals App ships an update every 3 months, and Swim Performance every 3 weeks. Most recently, Fundamentals App was updated on September 29, 2026 and Swim Performance on October 12, 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.*