# Tendon Tracker vs StackIQ

The clearest difference is price: StackIQ at Free against Tendon Tracker's $1.99. StackIQ also leads on update cadence (every 2 weeks vs every 2 months). Tendon Tracker's advantage is iOS requirement (13.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

StackIQ is free to download; Tendon Tracker costs $1.99 up front. Tendon Tracker sells 1 one-off in-app purchase and StackIQ sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Tendon Tracker ships an update every 2 months, StackIQ every 2 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Tendon Tracker | StackIQ |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/stackiq-supplement-tracker/id6759578140/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | — | Freemium |
| Size | 41 MB | 57 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [Innovation Codotek inc.](https://appshunter.io/developer/1863557856) | [Axon Technologies, LLC](https://appshunter.io/developer/1879610859) |

## What reviewers say

### Tendon Tracker

[App page](https://appshunter.io/ios/app/tendon-tracker/id6756897904)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Tendon Tracker Premium | $29.99 | one-time |


### StackIQ

[App page](https://appshunter.io/ios/app/stackiq-supplement-tracker/id6759578140)

Organize your daily vitamin and supplement intake, identify ingredient overlaps, and understand timing for better health decisions. This tool helps you view your entire supplement stack holistically, not just individual products.

**Highlights:** Track daily vitamins and supplements, Build and manage supplement routines, Review supplement ingredients, Spot overlapping ingredients, Catch duplicate dosing, AI-powered stack insights, Export supplement details

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StackIQ Pro_Monthly | $4.99 | per month |
| StackIQ Pro_Yearly | $39.99 | per year |


## Frequently asked questions

### Is Tendon Tracker free?

Tendon Tracker costs $1.99, and also offers in-app purchases.

### Is StackIQ free?

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

### Do Tendon Tracker or StackIQ have ads?

Neither Tendon Tracker nor StackIQ shows ads.

### Which is updated more often, Tendon Tracker or StackIQ?

Tendon Tracker ships an update every 2 months, and StackIQ every 2 weeks. Most recently, Tendon Tracker was updated on October 2, 2026 and StackIQ on October 6, 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.*