# Thin Within vs SUPPsnap

The clearest difference is update cadence: SUPPsnap at daily against Thin Within's every 2 months. Thin Within's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price and in-app purchases there is nothing between them.

Both are free to download. Thin Within sells 1 one-off in-app purchase and SUPPsnap sells 2 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Thin Within ships an update every 2 months, SUPPsnap daily. The most recent releases landed on October 4, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Thin Within | SUPPsnap |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | — | Yes |
| Update frequency | Every 2 months | **Daily** |
| Size | 40 MB | 49 MB |
| Requires iOS | **12.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Heidi Bylsma](https://appshunter.io/developer/793039689) | [ACApplications, LLC](https://appshunter.io/developer/986432007) |

## What reviewers say

### Thin Within

[App page](https://appshunter.io/ios/app/thin-within/id1571112521)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Time Subscription | $4.99 | one-time |


### SUPPsnap

[App page](https://appshunter.io/ios/app/suppsnap-analyze-supplements/id6739546193)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ultra Unlimited - Weekly | $0.99 | per 7 days |
| Ultra Unlimited - Monthly | $2.99 | per month |


## Frequently asked questions

### Is Thin Within free?

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

### Is SUPPsnap free?

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

### Which is updated more often, Thin Within or SUPPsnap?

Thin Within ships an update every 2 months, and SUPPsnap daily. Most recently, Thin Within was updated on October 4, 2026 and SUPPsnap on September 27, 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.*