# Karate Edge vs OPTIfit.

The clearest difference is update cadence: Karate Edge at monthly against OPTIfit.'s every 5 months. Karate Edge also leads on iOS requirement (10.0 vs 15.0). 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.

Karate Edge ships an update monthly, OPTIfit. every 5 months. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Karate Edge | OPTIfit. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (5 ratings)](https://appshunter.io/ios/app/karate-edge/id1361523221/reviews)** | — |
| Number of ratings | **5** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free | — |
| Size | 21 MB | 174 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [Karate Edge LLC](https://appshunter.io/developer/1533740493) | [OPTIfit Fitnessclub GbR](https://appshunter.io/developer/1582456382) |

## What reviewers say

### Karate Edge

[App page](https://appshunter.io/ios/app/karate-edge/id1361523221)

Stay updated with important notifications, access curriculum videos, and view class schedules. Sign up for special events, memberships, and refer friends directly from your mobile device.

**Highlights:** Notifications, Curriculum videos, Class schedules, Event sign-ups, Membership management, Friend referrals

**Features:** macOS Compatibility

**In-app purchases:** none


### OPTIfit.

[App page](https://appshunter.io/ios/app/optifit/id1582456380)

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

**In-app purchases:** none


## Frequently asked questions

### Is Karate Edge free?

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

### Is OPTIfit. free?

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

### Do Karate Edge or OPTIfit. have ads?

Neither Karate Edge nor OPTIfit. shows ads.

### Which is updated more often, Karate Edge or OPTIfit.?

Karate Edge ships an update monthly, and OPTIfit. every 5 months. Most recently, Karate Edge was updated on September 9, 2026 and OPTIfit. on September 15, 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.*