# SLK vs Smart Workout EMS 2.0

The clearest difference is update cadence: SLK at every 2 months against Smart Workout EMS 2.0's every 4 months. Smart Workout EMS 2.0's advantage is iOS requirement (12.0 vs 15.6). 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.

SLK ships an update every 2 months, Smart Workout EMS 2.0 every 4 months. The most recent releases landed on October 17, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | SLK | Smart Workout EMS 2.0 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 46 MB | 16 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Idwell GmbH](https://appshunter.io/developer/1269662593) | [MIA Werbeservice GmbH](https://appshunter.io/developer/1841545337) |

## What reviewers say

### SLK

[App page](https://appshunter.io/ios/app/slk/id6448578911)

**In-app purchases:** none


### Smart Workout EMS 2.0

[App page](https://appshunter.io/ios/app/smart-workout-ems-20/id6752882549)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SLK free?

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

### Is Smart Workout EMS 2.0 free?

Smart Workout EMS 2.0 is free to download, with no in-app purchases.

### Do SLK or Smart Workout EMS 2.0 have ads?

Neither SLK nor Smart Workout EMS 2.0 shows ads.

### Which is updated more often, SLK or Smart Workout EMS 2.0?

SLK ships an update every 2 months, and Smart Workout EMS 2.0 every 4 months. Most recently, SLK was updated on October 17, 2026 and Smart Workout EMS 2.0 on September 26, 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.*