# Stack vs Supplement Tracker

The clearest difference is update cadence: Stack at every 6 days against Supplement Tracker's fortnightly. Stack also leads on device support (3 vs 1) and iOS requirement (15.1 vs 17.0). On price, ads and in-app purchases there is nothing between them.

Both are free to download. Stack sells 3 in-app purchases, starting at $3.99 per month and Supplement Tracker sells 3 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

Stack ships an update every 6 days, Supplement Tracker fortnightly. The most recent releases landed on September 27, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Stack | Supplement Tracker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Fortnightly |
| Size | 62 MB | 3 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Naveen Senapathi](https://appshunter.io/developer/1889130875) | [Moonshot Media Limited](https://appshunter.io/developer/1895657487) |

## What reviewers say

### Stack

[App page](https://appshunter.io/ios/app/stack-routine-tracker/id6761363465)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Pro Monthly | $3.99 | per month |
| Stack Pro Annual | $39.99 | per year |
| Stack Pro Lifetime | $79.99 | one-time |


### Supplement Tracker

[App page](https://appshunter.io/ios/app/supplement-tracker-stack/id6780631034)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Stack Pro Monthly | $6.99 | per month |
| Stack Pro Yearly | $24.99 | per year |
| Stack Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Stack free?

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

### Is Supplement Tracker free?

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

### Do Stack or Supplement Tracker have ads?

Neither Stack nor Supplement Tracker shows ads.

### Which is updated more often, Stack or Supplement Tracker?

Stack ships an update every 6 days, and Supplement Tracker fortnightly. Most recently, Stack was updated on September 27, 2026 and Supplement Tracker on September 30, 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.*