# Stack Tracker AI vs Cortex

The clearest difference is review sentiment: Cortex at 100% against Stack Tracker AI's 0%. Cortex also leads on rating (5.0 vs 4.0) and iOS requirement (17.0 vs 26.0). Stack Tracker AI's advantage is monetization model (freemium vs subscription). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Stack Tracker AI sells 2 in-app purchases, starting at $1.99 per month and Cortex sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

Cortex holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews point the same way: 0% of Stack Tracker AI's written reviews are positive against 100% of Cortex's.

Stack Tracker AI ships an update fortnightly, Cortex every 11 days. The most recent releases landed on September 17, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Stack Tracker AI | Cortex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/stack-tracker-ai/id6740147043/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/cortex-nootropic-and-peptide-ai/id6762236719/reviews)** |
| Number of ratings | 2 | **5** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 11 days** |
| Monetization | **Freemium** | Subscription |
| Size | 28 MB | 11 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [MD Apps, LLC](https://appshunter.io/developer/346437629) | [Grimes AI LLC](https://appshunter.io/developer/1893497411) |

## What reviewers say

### Stack Tracker AI

[App page](https://appshunter.io/ios/app/stack-tracker-ai/id6740147043)

Effortlessly track, analyze, and optimize your supplement intake for improved wellness and fitness. Gain AI-powered insights, set flexible schedules, and visualize your progress with secure, private data storage.

**Highlights:** Seamless daily supplement tracking, AI-powered insights and trends, Flexible dose scheduling, Advanced progress visualizations, Private and secure data storage, Customizable supplement types

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Annual | $9.99 | per year |


### Cortex

[App page](https://appshunter.io/ios/app/cortex-nootropic-and-peptide-ai/id6762236719)

This AI-powered coach helps you build and optimize a personalized supplement regimen based on your goals and sensitivities. It tracks your progress, provides research-backed compound information, and offers cycling schedules. Access requires a subscription.

**Highlights:** Personalized supplement stack creation, AI research coach for optimization, Daily tracking with correlation analysis, Compound profiles with evidence tiers, Research summaries on interactions, Cycling and washout schedules

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cortex (Monthly) | $19.99 | per month |
| Cortex (Annual) | $139.99 | per year |


## Frequently asked questions

### Is Stack Tracker AI free?

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

### Is Cortex free?

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

### Which has better reviews, Stack Tracker AI or Cortex?

Cortex is rated higher. Stack Tracker AI averages 4.0 out of 5 from 2 ratings, while Cortex averages 5.0 from 5 ratings.

### Do Stack Tracker AI or Cortex have ads?

Neither Stack Tracker AI nor Cortex shows ads.

### Which is updated more often, Stack Tracker AI or Cortex?

Stack Tracker AI ships an update fortnightly, and Cortex every 11 days. Most recently, Stack Tracker AI was updated on September 17, 2026 and Cortex 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.*