# Math Challenge vs RecallNote

The clearest difference is update cadence: RecallNote at every 3 days against Math Challenge's every 3 weeks. RecallNote also leads on device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Math Challenge ships an update every 3 weeks, RecallNote every 3 days. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Math Challenge | RecallNote |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/recallnote/id6779927785/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Monetization | — | Free |
| Size | 3 MB | 47 MB |
| Requires iOS | **17.0** | 18 |
| Devices | iPhone | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [晓 郭](https://appshunter.io/developer/1895645928) | [JAESIK YOUN](https://appshunter.io/developer/1833834844) |

## What reviewers say

### Math Challenge

[App page](https://appshunter.io/ios/app/math-challenge-brain-battle/id6769259902)

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

**In-app purchases:** none


### RecallNote

[App page](https://appshunter.io/ios/app/recallnote/id6779927785)

This app helps you record, review, and retain learned material for both quick exam preparation and long-term memory. It features a memory rate calculation, achievement score tracking, and an exam prep mode for efficient review sessions. Customize your study experience with subject management and theme options.

**Highlights:** Add and manage review items with notes and images, Subject registration and management, Memory rate and achievement score tracking, Automatic next review date calculation, Exam prep mode for quick review, Customizable background themes, PDF annotation and Apple Pencil support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Math Challenge free?

Math Challenge is free to download, with no in-app purchases.

### Is RecallNote free?

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

### Do Math Challenge or RecallNote have ads?

Neither Math Challenge nor RecallNote shows ads.

### Which is updated more often, Math Challenge or RecallNote?

Math Challenge ships an update every 3 weeks, and RecallNote every 3 days. Most recently, Math Challenge was updated on October 7, 2026 and RecallNote on October 1, 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.*