# OPTIfit. vs CORE TRAIN

The clearest difference is update cadence: CORE TRAIN at fortnightly against OPTIfit.'s every 5 months. CORE TRAIN also leads on iOS requirement (12.4 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

OPTIfit. ships an update every 5 months, CORE TRAIN fortnightly. The most recent releases landed on September 15, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | OPTIfit. | CORE TRAIN |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Size | 174 MB | 11 MB |
| Requires iOS | 15.0 | **12.4** |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [OPTIfit Fitnessclub GbR](https://appshunter.io/developer/1582456382) | [Raul Caceres](https://appshunter.io/developer/1765619652) |

## What reviewers say

### OPTIfit.

[App page](https://appshunter.io/ios/app/optifit/id1582456380)

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

**In-app purchases:** none


### CORE TRAIN

[App page](https://appshunter.io/ios/app/core-train/id1615496427)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is OPTIfit. free?

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

### Is CORE TRAIN free?

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

### Do OPTIfit. or CORE TRAIN have ads?

Neither OPTIfit. nor CORE TRAIN shows ads.

### Which is updated more often, OPTIfit. or CORE TRAIN?

OPTIfit. ships an update every 5 months, and CORE TRAIN fortnightly. Most recently, OPTIfit. was updated on September 15, 2026 and CORE TRAIN on September 19, 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.*