# Flexx. vs KMOI

The clearest difference is in-app purchases: Flexx. at none against KMOI's 3. KMOI's advantage is update cadence (weekly vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. KMOI sells 3 in-app purchases, starting at $8.99 per month. Flexx. asks for nothing beyond the download.

Flexx. ships an update every 9 months, KMOI weekly. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Flexx. | KMOI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/flexx/id6475006579/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Monetization | Free | — |
| Size | 148 MB | 42 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Flexx](https://appshunter.io/developer/1723037324) | [Egor Golovitsyn](https://appshunter.io/developer/1890625897) |

## What reviewers say

### Flexx.

[App page](https://appshunter.io/ios/app/flexx/id6475006579)

This app helps you monitor workouts, track progress, and achieve fitness goals with personalized plans and engaging challenges. It integrates with HealthKit for seamless data syncing and offers class scheduling.

**Highlights:** Workout tracking, Personalized training plans, Activity level milestones, Fun challenges with rewards, Class scheduling and booking, HealthKit integration

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

**In-app purchases:** none


### KMOI

[App page](https://appshunter.io/ios/app/kmoi-running/id6761644783)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic (1 Month) | $8.99 | per month |
| Basic (3 Months) | $22.99 | per 3 months |
| Basic (1 Year) | $79.99 | per year |


## Frequently asked questions

### Is Flexx. free?

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

### Is KMOI free?

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

### Do Flexx. or KMOI have ads?

Neither Flexx. nor KMOI shows ads.

### Which is updated more often, Flexx. or KMOI?

Flexx. ships an update every 9 months, and KMOI weekly. Most recently, Flexx. was updated on October 1, 2026 and KMOI on September 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.*