# KSS vs ProteinLog

The clearest difference is in-app purchases: KSS at none against ProteinLog's 3. KSS also leads on iOS requirement (16.0 vs 26.0). ProteinLog's advantage is update cadence (weekly vs every 5 weeks). On price, ads and device support there is nothing between them.

Both are free to download. ProteinLog sells 3 in-app purchases, starting at $1.99 per 7 days. KSS asks for nothing beyond the download.

KSS ships an update every 5 weeks, ProteinLog weekly. The most recent releases landed on September 10, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | KSS | ProteinLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/proteinlog-macro-tracker/id6759217872/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | — | Subscription |
| Size | 73 MB | 114 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Strength Studio Kapunda PTY LTD](https://appshunter.io/developer/1830192916) | [Swiftful Dynamics](https://appshunter.io/developer/1839753891) |

## What reviewers say

### KSS

[App page](https://appshunter.io/ios/app/kss/id6749361509)

**Features:** macOS Compatibility

**In-app purchases:** none


### ProteinLog

[App page](https://appshunter.io/ios/app/proteinlog-macro-tracker/id6759217872)

This AI-powered app simplifies nutrition tracking by allowing users to log meals via photo, voice, text, or barcode. It provides detailed insights into calories, macros, and food quality to support various health goals like fat loss or muscle gain.

**Highlights:** AI-powered meal logging (photo, voice, text), Barcode scanning for packaged foods, Detailed calorie and macro tracking, Food quality insights, Apple Watch and Health integration, Saved meals and quick templates

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| ProteinLog Monthly | $7.99 | per month |
| ProteinLog Yearly | $69.99 | per year |


## Frequently asked questions

### Is KSS free?

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

### Is ProteinLog free?

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

### Do KSS or ProteinLog have ads?

Neither KSS nor ProteinLog shows ads.

### Which is updated more often, KSS or ProteinLog?

KSS ships an update every 5 weeks, and ProteinLog weekly. Most recently, KSS was updated on September 10, 2026 and ProteinLog on September 20, 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.*