# Frez vs TrainCurve

The clearest difference is device support: Frez at 4 against TrainCurve's 2. Frez also leads on iOS requirement (15.0 vs 17.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Frez sells 15 in-app purchases, starting at $2.99 per month and TrainCurve sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Frez ships an update weekly, TrainCurve fortnightly. The most recent releases landed on September 27, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Frez | TrainCurve |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (27 ratings)](https://appshunter.io/ios/app/frez-isometric-training/id6730120024/reviews)** | — |
| Number of ratings | **27** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Fortnightly |
| Monetization | Freemium | — |
| Size | 119 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 17+ |
| Developer | [Donghyun Kim](https://appshunter.io/developer/1669856479) | [ENRIQUE VALEROS MURIANA](https://appshunter.io/developer/6778818504) |

## What reviewers say

### Frez

[App page](https://appshunter.io/ios/app/frez-isometric-training/id6730120024)

This app offers isometric training routines with real-time force feedback. Track your performance, build custom workouts, and measure your strength gains. It works offline and connects to Bluetooth force measurement devices.

**Highlights:** Real-time force tracking, Peak and endurance tests, Customizable workout routines, Offline mode, Bluetooth device connectivity, Performance data visualization

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

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClimbHarder Premium (Monthly) | $2.99 | per month |
| Training Tools (Monthly) | $3.99 | per month |
| Training Tools (Monthly) | $4.99 | per month |
| ClimbHarder Premium (Monthly) | $4.99 | per month |
| Training Tools (Yearly) | $19.99 | per year |
| ClimbHarder Premium (Yearly) | $23.99 | per year |
| Training Tools (Yearly) | $24.99 | per year |
| Training Tools (Yearly) | $29.99 | per year |
| Training Tools (Yearly) | $29.99 | per year |
| ClimbHarder Premium (Yearly) | $29.99 | per year |
| ClimbHarder Premium (Yearly) | $29.99 | per year |
| ClimbHarder Training Tools | $29.99 | one-time |
| ClimbHarder Training Tools | $39.99 | one-time |
| ClimbHarder Training Tools | $89.99 | one-time |
| ClimbHarder Training Tools | $119.99 | one-time |


### TrainCurve

[App page](https://appshunter.io/ios/app/traincurve/id6782075437)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| TrainCurve Pro Monthly | $4.99 | per month |
| TrainCurve Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Frez free?

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

### Is TrainCurve free?

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

### Do Frez or TrainCurve have ads?

Neither Frez nor TrainCurve shows ads.

### Which is updated more often, Frez or TrainCurve?

Frez ships an update weekly, and TrainCurve fortnightly. Most recently, Frez was updated on September 27, 2026 and TrainCurve on September 10, 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.*