# Stack Guru vs Mnemonica

The clearest difference is price: Stack Guru at Free against Mnemonica's $6.99. Stack Guru also leads on iOS requirement (13.0 vs 16.6). Mnemonica's advantage is update cadence (every 9 days vs monthly) and chart position (#185 vs unranked). On ads, in-app purchases and device support there is nothing between them.

Stack Guru is free to download; Mnemonica costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stack Guru ships an update monthly, Mnemonica every 9 days. The most recent releases landed on June 4, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Stack Guru | Mnemonica |
| --- | --- | --- |
| Price | **Free** | $6.99 |
| Rating | **[4.8 (5 ratings)](https://appshunter.io/ios/app/stack-guru/id1492951343/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 9 days** |
| Monetization | Free | — |
| Best chart rank | — | **#185** |
| Size | 4 MB | 8 MB |
| Requires iOS | **13.0** | 16.6 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Jonas Eriksson](https://appshunter.io/developer/305659705) | [Javier Orbe](https://appshunter.io/developer/1816805650) |

## What reviewers say

### Stack Guru

[App page](https://appshunter.io/ios/app/stack-guru/id1492951343)

This app helps users memorize and practice a specific card stack, offering customizable practice modes and scheduled reminders. It features seamless integration with Apple Watch for on-the-go practice and progress tracking.

**Highlights:** Customizable practice modes, Scheduled practice reminders, Apple Watch integration, Dark mode support, CloudKit (iCloud) data security, Offline practice capability

**Features:** macOS Compatibility

**In-app purchases:** none


### Mnemonica

[App page](https://appshunter.io/ios/app/mnemonica-stack-trainer/id6746422559)

**Currently charting:** #185 Top Paid · Education (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Stack Guru free?

Stack Guru is free to download, with no in-app purchases.

### Is Mnemonica free?

Mnemonica costs $6.99, with no in-app purchases.

### Do Stack Guru or Mnemonica have ads?

Neither Stack Guru nor Mnemonica shows ads.

### Which is updated more often, Stack Guru or Mnemonica?

Stack Guru ships an update monthly, and Mnemonica every 9 days. Most recently, Stack Guru was updated on June 4, 2026 and Mnemonica on September 18, 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.*