# Workout Performance Diary vs Curls AI

The clearest difference is iOS requirement: Curls AI at 16.4 against Workout Performance Diary's 18.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Workout Performance Diary sells 2 in-app purchases, starting at $1.99 per month and Curls AI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Workout Performance Diary ships an update every 9 days, Curls AI every 5 days. The most recent releases landed on October 7, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Workout Performance Diary | Curls AI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 49 MB | 44 MB |
| Requires iOS | 18.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Denis Romantsov](https://appshunter.io/developer/1628930387) | [SABR LABS LTD](https://appshunter.io/developer/1863734513) |

## What reviewers say

### Workout Performance Diary

[App page](https://appshunter.io/ios/app/workout-performance-diary/id6503918091)

Log your gym workouts with detailed progress tracking. Build custom plans, monitor your stats like volume and one-rep max, and stay consistent with calendar tracking. Integrates with Apple Health for a comprehensive fitness overview.

**Highlights:** Custom workout plan creation, Calendar and streak tracking, Built-in exercise library, Detailed charts and stats, Workout history and trends, Rest timer, Apple Health integration

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $9.99 | per year |


### Curls AI

[App page](https://appshunter.io/ios/app/curls-ai/id6780203648)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Curls AI yearly | $29.99 | one-time |


## Frequently asked questions

### Is Workout Performance Diary free?

Workout Performance Diary is free to download, with in-app purchases available.

### Is Curls AI free?

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

### Do Workout Performance Diary or Curls AI have ads?

Neither Workout Performance Diary nor Curls AI shows ads.

### Which is updated more often, Workout Performance Diary or Curls AI?

Workout Performance Diary ships an update every 9 days, and Curls AI every 5 days. Most recently, Workout Performance Diary was updated on October 7, 2026 and Curls AI on October 6, 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.*