# Obitrain vs Whizz

The clearest difference is in-app purchases: Obitrain at none against Whizz's 2. Whizz's advantage is update cadence (every 9 days vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Whizz sells 2 in-app purchases, starting at $3.99 per month. Obitrain asks for nothing beyond the download.

Obitrain ships an update monthly, Whizz every 9 days. The most recent releases landed on October 3, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Obitrain | Whizz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.0 (1 ratings)](https://appshunter.io/ios/app/whizz/id6497229656/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 87 MB | 81 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Julien Brayere](https://appshunter.io/developer/1462513915) | [OptimaSport](https://appshunter.io/developer/1741307739) |

## What reviewers say

### Obitrain

[App page](https://appshunter.io/ios/app/obitrain/id1462514186)

**Features:** macOS Compatibility

**In-app purchases:** none


### Whizz

[App page](https://appshunter.io/ios/app/whizz/id6497229656)

This app provides personalized indoor cardio training plans generated by AI. It tracks your performance with detailed statistics, offers global challenges, and supports various cardio machines for weight loss, fitness improvement, or competition preparation.

**Highlights:** AI-generated personalized training plans, Supports various cardio machines, Calculates fitness indicators (VO₂max, BMI), Tracks session progress and statistics, Global community challenges and rankings, Instant access to training history

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $3.99 | per month |
| Yearly subscription | $29.90 | per year |


## Frequently asked questions

### Is Obitrain free?

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

### Is Whizz free?

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

### Do Obitrain or Whizz have ads?

Neither Obitrain nor Whizz shows ads.

### Which is updated more often, Obitrain or Whizz?

Obitrain ships an update monthly, and Whizz every 9 days. Most recently, Obitrain was updated on October 3, 2026 and Whizz on October 8, 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.*