# NailInsight vs SweatDiary

The clearest difference is in-app purchases: SweatDiary at none against NailInsight's 2. SweatDiary also leads on update cadence (every 4 days vs every 6 weeks). NailInsight's advantage is iOS requirement (13.0 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. NailInsight sells 2 in-app purchases, starting at $2.99 per month. SweatDiary asks for nothing beyond the download.

NailInsight ships an update every 6 weeks, SweatDiary every 4 days. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | NailInsight | SweatDiary |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Size | 60 MB | 7 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Alim Keskin](https://appshunter.io/developer/1884309591) | [Christoph Werner](https://appshunter.io/developer/1885005040) |

## What reviewers say

### NailInsight

[App page](https://appshunter.io/ios/app/nailinsight/id6760407062)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly Access | $2.99 | per month |
| Premium Yearly Access | $29.99 | per year |


### SweatDiary

[App page](https://appshunter.io/ios/app/sweatdiary/id6760564598)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is NailInsight free?

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

### Is SweatDiary free?

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

### Do NailInsight or SweatDiary have ads?

Neither NailInsight nor SweatDiary shows ads.

### Which is updated more often, NailInsight or SweatDiary?

NailInsight ships an update every 6 weeks, and SweatDiary every 4 days. Most recently, NailInsight was updated on October 16, 2026 and SweatDiary on October 13, 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.*