# Odyssey App vs ISO

The clearest difference is in-app purchases: Odyssey App at none against ISO's 3. Odyssey App also leads on iOS requirement (15.0 vs 18.1). ISO's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. ISO sells 3 in-app purchases, starting at $3.99 per month. Odyssey App asks for nothing beyond the download.

Odyssey App ships an update every 2 months, ISO every 2 weeks. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Odyssey App | ISO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/odyssey-app/id1450231978/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 129 MB | 255 MB |
| Requires iOS | **15.0** | 18.1 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Odyssey Knebworth Limited](https://appshunter.io/developer/1450231977) | [Isofi Limited](https://appshunter.io/developer/1818992497) |

## What reviewers say

### Odyssey App

[App page](https://appshunter.io/ios/app/odyssey-app/id1450231978)

Manage your fitness club activities, book classes, and stay updated with the latest health news. Access timetables, offers, and contact information easily. Integrates with HealthKit to track activity and encourage fitness.

**Highlights:** Book fitness classes, View class timetables, Receive news and offers, Integrates with HealthKit, Contact club information, Push notifications

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

**In-app purchases:** none


### ISO

[App page](https://appshunter.io/ios/app/iso-1/id6746943723)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Subscription | $3.99 | per month |
| Premium Yearly Subscription | $34.99 | per year |
| Unlock 'Listening History Upload' | $12.99 | one-time |


## Frequently asked questions

### Is Odyssey App free?

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

### Is ISO free?

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

### Do Odyssey App or ISO have ads?

Neither Odyssey App nor ISO shows ads.

### Which is updated more often, Odyssey App or ISO?

Odyssey App ships an update every 2 months, and ISO every 2 weeks. Most recently, Odyssey App was updated on October 24, 2026 and ISO on October 17, 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.*