# Keep Trainer vs HydrateMii

The clearest difference is in-app purchases: HydrateMii at none against Keep Trainer's 12. Keep Trainer's advantage is update cadence (every 2 weeks vs every 4 weeks) and device support (5 vs 1). On price and ads there is nothing between them.

Both are free to download. Keep Trainer sells 10 in-app purchases, starting at $9.99 per 7 days. HydrateMii asks for nothing beyond the download.

Keep Trainer ships an update every 2 weeks, HydrateMii every 4 weeks. The most recent releases landed on October 28, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Keep Trainer | HydrateMii |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (14K ratings)](https://appshunter.io/ios/app/keep-trainer-gym-workout-log/id1287964023/reviews)** | — |
| Number of ratings | **14K** | — |
| Positive reviews | 86.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 3 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod, Apple TV, Apple Watch** | iPhone |
| Age rating | 12+ | 17+ |
| Developer | [Calorie Tech Ltd.](https://appshunter.io/developer/1342123386) | [Jason McRainey](https://appshunter.io/developer/1739906265) |

## What reviewers say

### Keep Trainer

[App page](https://appshunter.io/ios/app/keep-trainer-gym-workout-log/id1287964023)

This app offers a comprehensive fitness coaching experience with a vast library of exercises and expert-designed workout routines. It provides personalized training plans, video guidance, and options for all fitness levels, allowing users to achieve their health and fitness goals at home.

**Highlights:** 400+ exercises database, 100+ expert-designed workouts, Video guidance from trainers, Personalized training plans, Workouts for all levels, Bodyweight exercises, Apple TV app support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $9.99 | per 7 days |
| Weekly Prenium | $9.99 | per 7 days |
| Monthly | $9.99 | per month |
| Monthly | $14.99 | per month |
| Workouts for All Levels | $19.99 | per month |
| Get Your Personal Coach | $29.99 | per year |
| Workouts for All Keep Levels | $39.99 | per year |
| Get Your Personal Coach | $49.99 | per year |
| Coke | $1.99 | one-time |
| Hamburger | $4.99 | one-time |


### HydrateMii

[App page](https://appshunter.io/ios/app/hydratemii/id6482852955)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Keep Trainer free?

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

### Is HydrateMii free?

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

### Do Keep Trainer or HydrateMii have ads?

Neither Keep Trainer nor HydrateMii shows ads.

### Which is updated more often, Keep Trainer or HydrateMii?

Keep Trainer ships an update every 2 weeks, and HydrateMii every 4 weeks. Most recently, Keep Trainer was updated on October 28, 2026 and HydrateMii on October 15, 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.*