# StackCards vs AXIOM

The clearest difference is update cadence: AXIOM at daily against StackCards's monthly. AXIOM also leads on iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. StackCards sells 1 one-off in-app purchase and AXIOM sells 2 in-app purchases, starting at $7.99 per month. Whichever you choose, the download price is not the number that matters.

StackCards ships an update monthly, AXIOM daily. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | StackCards | AXIOM |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Daily** |
| Monetization | — | Freemium |
| Size | 5 MB | 135 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Luis Leonardo Salas Delgadillo](https://appshunter.io/developer/6789007477) | [navid gahier](https://appshunter.io/developer/1797890438) |

## What reviewers say

### StackCards

[App page](https://appshunter.io/ios/app/stackcards-flashcards/id6789007475)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| StackCards Premium | $4.99 | one-time |


### AXIOM

[App page](https://appshunter.io/ios/app/axiom-maths-and-sciences/id6799700069)

This app teaches high school math and science concepts through interactive, hands-on exercises. It breaks down complex topics step-by-step, ensuring understanding before introducing formulas. Start with daily free lessons or unlock unlimited access with a subscription.

**Highlights:** Interactive manipulation of concepts, Step-by-step explanations, 52 levels from 10th to 12th grade, Focus on understanding 'why', Error-tolerant learning environment, Daily free lessons

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Axiom Pro Monthly | $7.99 | per month |
| Axiom Pro Yearly | $49.99 | per year |


## Frequently asked questions

### Is StackCards free?

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

### Is AXIOM free?

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

### Do StackCards or AXIOM have ads?

Neither StackCards nor AXIOM shows ads.

### Which is updated more often, StackCards or AXIOM?

StackCards ships an update monthly, and AXIOM daily. Most recently, StackCards was updated on October 6, 2026 and AXIOM on October 14, 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.*