# Synstax vs SuppNest

The clearest difference is update cadence: SuppNest at every 6 days against Synstax's every 3 weeks. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Synstax sells 3 in-app purchases, starting at $4.99 per month and SuppNest sells 2 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

Synstax ships an update every 3 weeks, SuppNest every 6 days. The most recent releases landed on October 11, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Synstax | SuppNest |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/synstax-interaction-checker/id6760453147/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 6 days** |
| Monetization | Freemium | — |
| Size | 152 MB | 92 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [宁 丁](https://appshunter.io/developer/1848762948) | [ayumu kitabayashi](https://appshunter.io/developer/6786190170) |

## What reviewers say

### Synstax

[App page](https://appshunter.io/ios/app/synstax-interaction-checker/id6760453147)

This app helps you manage your supplement intake by checking for interactions between supplements and how your diet affects absorption. It features AI-powered label scanning, intake tracking, and personalized insights to optimize your routine.

**Highlights:** Supplement combination checker, Diet-supplement absorption insights, AI-powered label scanner, Smart intake tracking, AI analysis and chat, Personalized scheduling

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synstax Pro | $4.99 | per month |
| Synstax Pro | $29.99 | per year |
| Synstax Pro Lifetime | $69.99 | one-time |


### SuppNest

[App page](https://appshunter.io/ios/app/suppnest/id6792492709)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SuppNest Pro（月額） | $3.99 | per month |
| SuppNest Pro（年額） | $24.99 | per year |


## Frequently asked questions

### Is Synstax free?

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

### Is SuppNest free?

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

### Do Synstax or SuppNest have ads?

Neither Synstax nor SuppNest shows ads.

### Which is updated more often, Synstax or SuppNest?

Synstax ships an update every 3 weeks, and SuppNest every 6 days. Most recently, Synstax was updated on October 11, 2026 and SuppNest on October 7, 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.*