# Diett vs PT Pro

The clearest difference is in-app purchases: PT Pro at none against Diett's 2. PT Pro also leads on update cadence (monthly vs every 88 months). Diett's advantage is device support (4 vs 2). On price and iOS requirement there is nothing between them.

Both are free to download. Diett sells 2 one-off in-app purchases. PT Pro asks for nothing beyond the download.

Diett ships an update every 88 months, PT Pro monthly. The most recent releases landed on October 13, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Diett | PT Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | Every 88 months | **Monthly** |
| Size | 23 MB | 159 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dietika AS](https://appshunter.io/developer/1050426921) | [PT Pro AS](https://appshunter.io/developer/1759565475) |

## What reviewers say

### Diett

[App page](https://appshunter.io/ios/app/diett/id1082157279)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock monthly subscription | $4.99 | one-time |
| Unlock yearly subscription | $49.99 | one-time |


### PT Pro

[App page](https://appshunter.io/ios/app/pt-pro/id6578452781)

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

**In-app purchases:** none


## Frequently asked questions

### Is Diett free?

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

### Is PT Pro free?

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

### Which is updated more often, Diett or PT Pro?

Diett ships an update every 88 months, and PT Pro monthly. Most recently, Diett was updated on October 13, 2026 and PT Pro on October 14, 2026.

---

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