# Math Flash vs StudyX Smartpaper Letters

The clearest difference is price: Math Flash at Free against StudyX Smartpaper Letters's $9.99. Math Flash also leads on update cadence (every 2 months vs every 5 months). StudyX Smartpaper Letters's advantage is iOS requirement (15.5 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

Math Flash is free to download; StudyX Smartpaper Letters costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Math Flash ships an update every 2 months, StudyX Smartpaper Letters every 5 months. The most recent releases landed on September 1, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Math Flash | StudyX Smartpaper Letters |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/math-flash-fast-arithmetic/id6739975541/reviews)** | — |
| Number of ratings | **4** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | **Free** | Paid |
| Size | 7 MB | 191 MB |
| Requires iOS | 18.0 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joel Boyd](https://appshunter.io/developer/1787767717) | [StudyX G.K.](https://appshunter.io/developer/1451314118) |

## What reviewers say

### Math Flash

[App page](https://appshunter.io/ios/app/math-flash-fast-arithmetic/id6739975541)

This app offers a focused approach to mastering fundamental arithmetic skills through interactive flashcards. Practice multiplication, division, addition, and subtraction with options for specific number focus, timed tests, and review of missed questions. It provides detailed statistics and instant feedback to build speed and accuracy.

**Highlights:** Multiplication, division, addition, subtraction practice, Focus on specific numbers (1-12), Timed test mode, Review missed problems, Detailed progress statistics, Instant feedback with haptics, Dark mode support

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

**In-app purchases:** none


### StudyX Smartpaper Letters

[App page](https://appshunter.io/ios/app/studyx-smartpaper-letters/id6747577195)

This app offers a digital approach to learning letter and character formation, inspired by Montessori methods. It features over 10,000 characters from various languages, including stroke-by-stroke guidance and real-time scoring for self-paced learning.

**Highlights:** Over 10,000 characters (Japanese, Chinese, Korean, English, numerals), Stroke-by-stroke tracing guidance with animation, Real-time scoring against model characters, Montessori-style color coding, Cursive alphabet toggle, Saved practice history (on-device)

**In-app purchases:** none


## Frequently asked questions

### Is Math Flash free?

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

### Is StudyX Smartpaper Letters free?

StudyX Smartpaper Letters costs $9.99, with no in-app purchases.

### Do Math Flash or StudyX Smartpaper Letters have ads?

Neither Math Flash nor StudyX Smartpaper Letters shows ads.

### Which is updated more often, Math Flash or StudyX Smartpaper Letters?

Math Flash ships an update every 2 months, and StudyX Smartpaper Letters every 5 months. Most recently, Math Flash was updated on September 1, 2026 and StudyX Smartpaper Letters on September 21, 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.*