# Undersun Fitness vs Race Pacer

The clearest difference is in-app purchases: Race Pacer at none against Undersun Fitness's 5. Undersun Fitness's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Undersun Fitness sells 5 in-app purchases, starting at $9.99 per month. Race Pacer asks for nothing beyond the download.

## The numbers

| Metric | Undersun Fitness | Race Pacer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (51 ratings)](https://appshunter.io/ios/app/undersun-fitness/id1519951676/reviews)** | — |
| Number of ratings | **51** | — |
| Positive reviews | 33.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 105 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Heros Life LLC](https://appshunter.io/developer/1519951678) | [Pavel Korkodinov](https://appshunter.io/developer/1678329945) |

## What reviewers say

### Undersun Fitness

[App page](https://appshunter.io/ios/app/undersun-fitness/id1519951676)

Access expert-designed workout programs for all fitness levels, usable anywhere. Follow day-by-day plans with video demonstrations of proper exercise form to build muscle or lose fat.

**Highlights:** Day-by-day workout breakdown, Expert trainer guidance, Video tutorials for exercises, Build muscle or lose fat, Workout anywhere (home, gym, outdoors)

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $9.99 | per month |
| Yearly Access | $69.99 | per year |
| TA2 Bodyshock | $39.99 | one-time |
| TA2 Build | $59.99 | one-time |
| TA2 SIZE-ON | $59.99 | one-time |

**What reviewers like**

- 👍 Clear and concise exercise video demonstrations
- 💪 Effective workout programs with proven results
- 🎯 Convenient band-based training for travel
- 📱 User-friendly interface design
- ⏱️ Rest timer between sets

**What reviewers complain about**

- 🐛 Frequent app crashes and freezes
- 🔴 Regular server downtime and outages
- ❌ Videos fail to load or play
- 🔐 Login and authentication issues
- 📉 Loss of workout data and progress

**Reported bugs**

- App crashes between workout modules
- Videos don't load or get stuck buffering
- Password reset email links don't work
- Login credentials not recognized despite valid account
- Error 500 server errors

**Requested features**

- Ability to view previous workout data during current workout
- Edit logged reps and band selections after submission
- Landscape mode support for tablets
- Apple Watch and Apple Health integration
- Offline/downloadable content for no-internet workouts


### Race Pacer

[App page](https://appshunter.io/ios/app/race-pacer-split-timer/id6776635292)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Undersun Fitness free?

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

### Is Race Pacer free?

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

### Do Undersun Fitness or Race Pacer have ads?

Neither Undersun Fitness nor Race Pacer shows ads.

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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.*