# Stackd vs Tonic

The clearest difference is in-app purchases: Tonic at none against Stackd's 2. Tonic also leads on iOS requirement (18.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Stackd sells 2 in-app purchases, starting at $3.99 per month. Tonic asks for nothing beyond the download.

## The numbers

| Metric | Stackd | Tonic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Size | 13 MB | 18 MB |
| Requires iOS | 26.0 | **18.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [Joan Cardona](https://appshunter.io/developer/1440419863) | [Gerard Andrew Ho Sum Casey](https://appshunter.io/developer/6789827527) |

## What reviewers say

### Stackd

[App page](https://appshunter.io/ios/app/stackd-supplement-tracker/id6758957017)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro monthly | $3.99 | per month |
| Pro Yearly | $19.99 | per year |


### Tonic

[App page](https://appshunter.io/ios/app/tonic-supplement-science/id6789827525)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stackd free?

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

### Is Tonic free?

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

### Do Stackd or Tonic have ads?

Neither Stackd nor Tonic shows ads.

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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.*