# ABYX FIT AIR vs Flex

The clearest difference is review sentiment: Flex at 48% against ABYX FIT AIR's 0%. Flex also leads on update cadence (every 3 weeks vs every 2 months). ABYX FIT AIR's advantage is in-app purchases (none vs 7) and iOS requirement (10.0 vs 15.6). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. Flex sells 6 in-app purchases, starting at $2.99 per month. ABYX FIT AIR asks for nothing beyond the download.

ABYX FIT AIR ships an update every 2 months, Flex every 3 weeks. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | ABYX FIT AIR | Flex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (6 ratings)](https://appshunter.io/ios/app/flex/id1551175364/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | 0.0% of reviews | **48.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 92 MB | 87 MB |
| Requires iOS | **10.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Onyx Group Limited](https://appshunter.io/developer/1290042053) | [MMSPORT](https://appshunter.io/developer/1094277528) |

## What reviewers say

### ABYX FIT AIR

[App page](https://appshunter.io/ios/app/abyx-fit-air/id1480192876)

Monitor daily activities, set health goals, and track workouts with this app. It analyzes sleep quality, heart rate, and calories burned. Syncs with the Health app for comprehensive health data.

**Highlights:** Activity tracking, Heart rate monitoring, Step counter, Calorie tracking, Sleep analysis, Sport modes, Health app integration

**Features:** macOS Compatibility

**In-app purchases:** none


### Flex

[App page](https://appshunter.io/ios/app/flex/id1551175364)

This app consolidates workplace wellness services, including gym access, well-being treatments, and electric bike sharing. It allows users to manage gym memberships, book classes, schedule appointments with practitioners, and reserve bikes.

**Highlights:** Gym news and class booking, Well-being and soft medicine services, Appointment scheduling for practitioners, Electric bike sharing and management, Workplace service integration

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Abonnement podcast mensuel | $2.99 | per month |
| Cours en ligne - Mensuel | $4.49 | per month |
| Podcasts annuel | $13.99 | per year |
| Cours en ligne abo annuel | $18.49 | per year |
| Cours en ligne - Annuel | $18.49 | per year |
| Cours en ligne abo annuel | $18.99 | per year |


## Frequently asked questions

### Is ABYX FIT AIR free?

ABYX FIT AIR is free to download, with no in-app purchases.

### Is Flex free?

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

### Do ABYX FIT AIR or Flex have ads?

Neither ABYX FIT AIR nor Flex shows ads.

### Which is updated more often, ABYX FIT AIR or Flex?

ABYX FIT AIR ships an update every 2 months, and Flex every 3 weeks. Most recently, ABYX FIT AIR was updated on October 25, 2026 and Flex on October 29, 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.*