# Sis vs KasMaker

The clearest difference is in-app purchases: Sis at none against KasMaker's 3. Sis also leads on iOS requirement (15.1 vs 18.0). KasMaker's advantage is update cadence (every 5 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. KasMaker sells 3 in-app purchases, starting at $2.99 per month. Sis asks for nothing beyond the download.

Sis ships an update every 3 months, KasMaker every 5 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Sis | KasMaker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sis/id6746260505/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 181 MB | 10 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [DT HEALTH AND FITNESS COACHING LTD](https://appshunter.io/developer/1815958163) | [Abdullah Ozturk](https://appshunter.io/developer/1879140207) |

## What reviewers say

### Sis

[App page](https://appshunter.io/ios/app/sis/id6746260505)

A strength training platform designed exclusively for women, offering expert-led workouts, mental resilience tools, and a supportive community. Achieve your fitness goals at your own pace, whether at home or in the gym.

**Highlights:** Structured strength programs for all levels, Realistic resilience tools and guidance, Supportive sisterhood community, Progress tracking for physical and mental wins, Live classes and challenges, Diverse training styles (bodyweight, kettlebell, etc.)

**Features:** macOS Compatibility

**In-app purchases:** none


### KasMaker

[App page](https://appshunter.io/ios/app/kasmaker-muscle-tracker/id6761697509)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KasMaker Pro Monthly | $2.99 | per month |
| KasMaker Pro Yearly | $19.99 | per year |
| KasMaker Pro Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is Sis free?

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

### Is KasMaker free?

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

### Do Sis or KasMaker have ads?

Neither Sis nor KasMaker shows ads.

### Which is updated more often, Sis or KasMaker?

Sis ships an update every 3 months, and KasMaker every 5 weeks. Most recently, Sis was updated on October 24, 2026 and KasMaker on October 24, 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.*