# Kyna vs Optimal Trainer

The clearest difference is in-app purchases: Kyna at none against Optimal Trainer's 4. Optimal Trainer's advantage is update cadence (every 4 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Optimal Trainer sells 4 in-app purchases, starting at $2.99 per 7 days. Kyna asks for nothing beyond the download.

Kyna ships an update fortnightly, Optimal Trainer every 4 days. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Kyna | Optimal Trainer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 4 days** |
| Size | 37 MB | 81 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Keanu Calo](https://appshunter.io/developer/1829696197) | [AppFriend Pty Ltd](https://appshunter.io/developer/1842185843) |

## What reviewers say

### Kyna

[App page](https://appshunter.io/ios/app/kyna/id6749269525)

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

**In-app purchases:** none


### Optimal Trainer

[App page](https://appshunter.io/ios/app/optimal-trainer/id6753577364)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Base Weekly Plan | $2.99 | per 7 days |
| Platinum Weekly Plan | $5.99 | per 7 days |
| Optimal Trainer Base Monthly | $12.99 | per month |
| Platinum 1_1 Coaching | $49.99 | per month |


## Frequently asked questions

### Is Kyna free?

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

### Is Optimal Trainer free?

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

### Do Kyna or Optimal Trainer have ads?

Neither Kyna nor Optimal Trainer shows ads.

### Which is updated more often, Kyna or Optimal Trainer?

Kyna ships an update fortnightly, and Optimal Trainer every 4 days. Most recently, Kyna was updated on October 7, 2026 and Optimal Trainer on October 14, 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.*