# Fitness App (ABC Trainerize) vs Underwave Training

The clearest difference is chart position: Fitness App (ABC Trainerize) at #166 against Underwave Training's unranked. Fitness App (ABC Trainerize) also leads on device support (4 vs 2). Underwave Training's advantage is iOS requirement (13.0 vs 15.5). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Fitness App (ABC Trainerize) | Underwave Training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (69K ratings)](https://appshunter.io/ios/app/fitness-app-abc-trainerize/id516851502/reviews)** | — |
| Number of ratings | **69K** | — |
| Positive reviews | 55.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Freemium | — |
| Best chart rank | **#166** | — |
| Size | 489 MB | 30 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trainerize.com](https://appshunter.io/developer/516851505) | [Augusto Carrara](https://appshunter.io/developer/1708869023) |

## What reviewers say

### Fitness App (ABC Trainerize)

[App page](https://appshunter.io/ios/app/fitness-app-abc-trainerize/id516851502)

**Currently charting:** #166 Top Free · Health & Fitness (US App Store)

This app connects fitness professionals with their clients, offering tools for online coaching, personalized training plans, nutrition guidance, and progress tracking. It aims to enhance client engagement and help individuals achieve their health goals through a comprehensive digital experience.

**Highlights:** Client engagement tools, Online training plan delivery, Nutrition and habit coaching, Progress tracking, In-app messaging and groups, Customizable workouts

**Features:** Apple Wallet, Apple Watch app

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use
- 🚀 Convenient app integration
- 💪 Effective for fitness goals
- 🤝 Excellent trainer support
- 📊 Helpful progress tracking

**What reviewers complain about**

- 🐛 Buggy performance
- 🔋 High battery drain
- 🔇 Audio issues
- 🤖 Automated messages instead of trainer
- 🔍 Difficulty accessing/managing data

**Reported bugs**

- Workout tracking issues
- Sync problems with other apps
- Frequent crashes and freezes
- Account access/login problems
- Inconsistent performance on iOS devices

**Requested features**

- Add ability to edit workouts
- Improve Apple Watch integration
- Provide more exercise options
- Add detailed weight/body metric tracking
- Enable manual meal/activity logging


### Underwave Training

[App page](https://appshunter.io/ios/app/underwave-training/id6467622177)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fitness App (ABC Trainerize) free?

Fitness App (ABC Trainerize) is free to download, with no in-app purchases.

### Is Underwave Training free?

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

### Do Fitness App (ABC Trainerize) or Underwave Training have ads?

Neither Fitness App (ABC Trainerize) nor Underwave Training shows ads.

### Which is updated more often, Fitness App (ABC Trainerize) or Underwave Training?

Fitness App (ABC Trainerize) ships an update every 3 weeks, and Underwave Training every 3 weeks. Most recently, Fitness App (ABC Trainerize) was updated on November 1, 2026 and Underwave Training 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.*