# OnDose vs Synstax

The clearest difference is iOS requirement: OnDose at 15.1 against Synstax's 17.0. On price and in-app purchases there is nothing between them.

Both are free to download. OnDose sells 1 in-app purchase, starting at $7.99 per month and Synstax sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | OnDose | Synstax |
| --- | --- | --- |
| 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 |
| Update frequency | — | Every 3 weeks |
| Monetization | — | Freemium |
| Size | 43 MB | 152 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | — | **iPhone** |
| Age rating | 12+ | 12+ |
| Developer | [Sidney Ottelohe](https://appshunter.io/developer/1880135207) | [宁 丁](https://appshunter.io/developer/1848762948) |

## What reviewers say

### OnDose

[App page](https://appshunter.io/ios/app/ondose-stack-manager/id6759676991)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OnDose Monthly | $7.99 | per month |


### 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 |


## Frequently asked questions

### Is OnDose free?

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

### Is Synstax free?

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

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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.*