# O'care Body Composition App vs KnowKnow AI

The clearest difference is in-app purchases: O'care Body Composition App at none against KnowKnow AI's 4. O'care Body Composition App also leads on iOS requirement (12.0 vs 16.4). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. KnowKnow AI sells 4 in-app purchases, starting at $9.99 per month. O'care Body Composition App asks for nothing beyond the download.

O'care Body Composition App ships an update every 6 weeks, KnowKnow AI every 3 weeks. The most recent releases landed on October 18, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | O'care Body Composition App | KnowKnow AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (2 ratings)](https://appshunter.io/ios/app/knowknow-ai/id6748773796/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | — | Freemium |
| Size | 69 MB | 104 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Charder Electronic Co., Ltd.](https://appshunter.io/developer/796349103) | [RETOWER TECH PTE. LTD.](https://appshunter.io/developer/1827325376) |

## What reviewers say

### O'care Body Composition App

[App page](https://appshunter.io/ios/app/ocare-body-composition-app/id1508430987)

**Features:** macOS Compatibility

**In-app purchases:** none


### KnowKnow AI

[App page](https://appshunter.io/ios/app/knowknow-ai/id6748773796)

Effortlessly track your nutrition by simply snapping a photo of your food. This AI-powered tool provides instant analysis of calorie and macronutrient content, helping you understand your dietary intake.

**Highlights:** AI-powered food analysis, Instant calorie and macro breakdown, Photo-based tracking, Nutrition insights

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| KnowKnow Plus | $9.99 | per month |
| KnowKnow Pro | $14.99 | per month |
| KnowKnow Plus Yearly | $113.99 | per year |
| KnowKnow Pro Yearly | $178.99 | per year |


## Frequently asked questions

### Is O'care Body Composition App free?

O'care Body Composition App is free to download, with no in-app purchases.

### Is KnowKnow AI free?

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

### Do O'care Body Composition App or KnowKnow AI have ads?

Neither O'care Body Composition App nor KnowKnow AI shows ads.

### Which is updated more often, O'care Body Composition App or KnowKnow AI?

O'care Body Composition App ships an update every 6 weeks, and KnowKnow AI every 3 weeks. Most recently, O'care Body Composition App was updated on October 18, 2026 and KnowKnow AI on October 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.*