# Cortex vs StackProof

The clearest difference is iOS requirement: StackProof at 15.1 against Cortex's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Cortex sells 2 in-app purchases, starting at $19.99 per month and StackProof sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

Cortex ships an update every 11 days, StackProof weekly. The most recent releases landed on August 13, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Cortex | StackProof |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/cortex-nootropic-and-peptide-ai/id6762236719/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 days | **Weekly** |
| Monetization | Subscription | — |
| Size | 11 MB | 42 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Grimes AI LLC](https://appshunter.io/developer/1893497411) | [joel Saucedo Lozano](https://appshunter.io/developer/1895885764) |

## What reviewers say

### 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 |


### StackProof

[App page](https://appshunter.io/ios/app/stackproof-supplement-tracker/id6764703324)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $34.99 | per year |
| Lifetime | $59.99 | one-time |


## Frequently asked questions

### Is Cortex free?

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

### Is StackProof free?

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

### Do Cortex or StackProof have ads?

Neither Cortex nor StackProof shows ads.

### Which is updated more often, Cortex or StackProof?

Cortex ships an update every 11 days, and StackProof weekly. Most recently, Cortex was updated on August 13, 2026 and StackProof on September 15, 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.*