# Optitrainer vs Cardio Energizer

The clearest difference is update cadence: Optitrainer at every 3 weeks against Cardio Energizer's every 13 months. 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.

Optitrainer ships an update every 3 weeks, Cardio Energizer every 13 months. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Optitrainer | Cardio Energizer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 13 months |
| Size | 41 MB | 75 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optitrainer](https://appshunter.io/developer/1503261302) | [Centre Lorrain d Education par le Sport](https://appshunter.io/developer/1617595332) |

## What reviewers say

### Optitrainer

[App page](https://appshunter.io/ios/app/optitrainer/id1503261303)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Cardio Energizer

[App page](https://appshunter.io/ios/app/cardio-energizer/id1617595330)

**In-app purchases:** none


## Frequently asked questions

### Is Optitrainer free?

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

### Is Cardio Energizer free?

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

### Do Optitrainer or Cardio Energizer have ads?

Neither Optitrainer nor Cardio Energizer shows ads.

### Which is updated more often, Optitrainer or Cardio Energizer?

Optitrainer ships an update every 3 weeks, and Cardio Energizer every 13 months. Most recently, Optitrainer was updated on September 29, 2026 and Cardio Energizer on October 6, 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.*