# AI Diet & Workout Trainer vs SmileProgress

The clearest difference is in-app purchases: AI Diet & Workout Trainer at none against SmileProgress's 1. AI Diet & Workout Trainer also leads on update cadence (every 4 days vs every 3 weeks) and iOS requirement (15.0 vs 17.6). SmileProgress's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. SmileProgress sells 1 one-off in-app purchase. AI Diet & Workout Trainer asks for nothing beyond the download.

AI Diet & Workout Trainer ships an update every 4 days, SmileProgress every 3 weeks. The most recent releases landed on October 31, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AI Diet & Workout Trainer | SmileProgress |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Size | 52 MB | 37 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [0x48lab](https://appshunter.io/developer/1744366800) | [Naoki MORI](https://appshunter.io/developer/1792772188) |

## What reviewers say

### AI Diet & Workout Trainer

[App page](https://appshunter.io/ios/app/ai-diet-and-workout-trainer/id6776113681)

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

**In-app purchases:** none


### SmileProgress

[App page](https://appshunter.io/ios/app/smileprogress/id6780383136)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Keep Recording (one-time) | $0.99 | one-time |


## Frequently asked questions

### Is AI Diet & Workout Trainer free?

AI Diet & Workout Trainer is free to download, with no in-app purchases.

### Is SmileProgress free?

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

### Do AI Diet & Workout Trainer or SmileProgress have ads?

AI Diet & Workout Trainer shows ads; SmileProgress does not.

### Which is updated more often, AI Diet & Workout Trainer or SmileProgress?

AI Diet & Workout Trainer ships an update every 4 days, and SmileProgress every 3 weeks. Most recently, AI Diet & Workout Trainer was updated on October 31, 2026 and SmileProgress on October 25, 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.*