# Stayff vs Learn Math Faster

The clearest difference is in-app purchases: Learn Math Faster at none against Stayff's 2. Learn Math Faster also leads on iOS requirement (13.0 vs 15). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Stayff sells 2 in-app purchases, starting at $0.99 per month. Learn Math Faster asks for nothing beyond the download.

Stayff ships an update every 3 days, Learn Math Faster every 6 days. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Stayff | Learn Math Faster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-math-faster-mental-math/id6761587490/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 6 days |
| Monetization | — | Free |
| Size | 33 MB | 118 MB |
| Requires iOS | 15 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dat Nguyen Thanh](https://appshunter.io/developer/1679212277) | [An Nguyen](https://appshunter.io/developer/1864472374) |

## What reviewers say

### Stayff

[App page](https://appshunter.io/ios/app/stayff-focus-and-workouts/id6748627484)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited monthly | $0.99 | per month |
| Lifetime | $1.99 | one-time |


### Learn Math Faster

[App page](https://appshunter.io/ios/app/learn-math-faster-mental-math/id6761587490)

Master mental math with engaging drawing challenges. Solve simple math problems by sketching answers on a digital whiteboard. Ideal for learning, practicing, or simply relaxing with quick, stress-free sessions.

**Highlights:** Quick math drills (addition, subtraction, multiplication, division), Solve problems by drawing on a digital whiteboard, Speed challenges with timed rounds, Relaxing, short learning sessions, Progress tracking and personal bests

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

**In-app purchases:** none


## Frequently asked questions

### Is Stayff free?

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

### Is Learn Math Faster free?

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

### Do Stayff or Learn Math Faster have ads?

Neither Stayff nor Learn Math Faster shows ads.

### Which is updated more often, Stayff or Learn Math Faster?

Stayff ships an update every 3 days, and Learn Math Faster every 6 days. Most recently, Stayff was updated on November 5, 2026 and Learn Math Faster on October 31, 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.*