# Lexi vs Math Facts

The clearest difference is update cadence: Math Facts at every 9 days against Lexi's every 3 months. Lexi's advantage is iOS requirement (15.1 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Lexi sells 2 in-app purchases, starting at $3.99 per month and Math Facts sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Lexi ships an update every 3 months, Math Facts every 9 days. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Lexi | Math Facts |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Size | 47 MB | 5 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oleksandra Ovcharova](https://appshunter.io/developer/1870375512) | [STRIPEY DESIGN LTD](https://appshunter.io/developer/636939137) |

## What reviewers say

### Lexi

[App page](https://appshunter.io/ios/app/lexi-personal-dictionary/id6758023410)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lexi Premium – Monthly | $3.99 | per month |
| Lexi Premium – Yearly | $39.99 | per year |


### Math Facts

[App page](https://appshunter.io/ios/app/math-facts-ten-frames/id6764541520)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Everything | $5.99 | one-time |


## Frequently asked questions

### Is Lexi free?

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

### Is Math Facts free?

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

### Do Lexi or Math Facts have ads?

Neither Lexi nor Math Facts shows ads.

### Which is updated more often, Lexi or Math Facts?

Lexi ships an update every 3 months, and Math Facts every 9 days. Most recently, Lexi was updated on October 31, 2026 and Math Facts on November 5, 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.*