# KETOSCAN vs Grinds

The clearest difference is in-app purchases: KETOSCAN at none against Grinds's 2. KETOSCAN also leads on iOS requirement (12.0 vs 15.1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Grinds sells 2 in-app purchases, starting at $0.99 per month. KETOSCAN asks for nothing beyond the download.

KETOSCAN ships an update every 4 weeks, Grinds fortnightly. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | KETOSCAN | Grinds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.7 (15 ratings)](https://appshunter.io/ios/app/ketoscan/id1446527194/reviews)** | — |
| Number of ratings | **15** | — |
| Positive reviews | 31.6% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | Free | — |
| Size | 53 MB | 51 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [SENTECH KOREA CORP](https://appshunter.io/developer/1446527193) | [KyeongRyeol Kim](https://appshunter.io/developer/1727886401) |

## What reviewers say

### KETOSCAN

[App page](https://appshunter.io/ios/app/ketoscan/id1446527194)

This device measures ketone levels through breath analysis, indicating body fat decomposition. It's ideal for those on ketogenic diets or seeking to monitor fat loss scientifically. Data can be integrated with the Health app for comprehensive tracking.

**Highlights:** Breath ketone measurement, Body fat decomposition rate, Ketogenic diet support, Health app integration, Scientific diet tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Grinds

[App page](https://appshunter.io/ios/app/grinds/id6748243572)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Course Premium Monthly | $0.99 | per month |
| Yearly Premium | $4.99 | per year |


## Frequently asked questions

### Is KETOSCAN free?

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

### Is Grinds free?

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

### Do KETOSCAN or Grinds have ads?

Neither KETOSCAN nor Grinds shows ads.

### Which is updated more often, KETOSCAN or Grinds?

KETOSCAN ships an update every 4 weeks, and Grinds fortnightly. Most recently, KETOSCAN was updated on October 10, 2026 and Grinds on October 6, 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.*