# StackIQ vs Synstax

The clearest difference is iOS requirement: StackIQ at 15.1 against Synstax's 17.0. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. StackIQ sells 2 in-app purchases, starting at $4.99 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.

On the App Store both sit at effectively the same score — 5.0 for StackIQ against 5.0 for Synstax. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

StackIQ ships an update every 2 weeks, Synstax every 3 weeks. The most recent releases landed on October 6, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | StackIQ | Synstax |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/stackiq-supplement-tracker/id6759578140/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/synstax-interaction-checker/id6760453147/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Freemium | Freemium |
| Size | 57 MB | 152 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 12+ | 12+ |
| Developer | [Axon Technologies, LLC](https://appshunter.io/developer/1879610859) | [宁 丁](https://appshunter.io/developer/1848762948) |

## What reviewers say

### 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 |


### 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 StackIQ free?

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

### Is Synstax free?

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

### Which has better reviews, StackIQ or Synstax?

StackIQ and Synstax are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do StackIQ or Synstax have ads?

Neither StackIQ nor Synstax shows ads.

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

StackIQ ships an update every 2 weeks, and Synstax every 3 weeks. Most recently, StackIQ was updated on October 6, 2026 and Synstax on October 11, 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.*