# 3n or Not vs MathLitera

The clearest difference is in-app purchases: 3n or Not at none against MathLitera's 11. MathLitera's advantage is ads (none vs shown) and update cadence (fortnightly vs every 4 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. MathLitera sells 11 one-off in-app purchases. 3n or Not asks for nothing beyond the download.

3n or Not ships an update every 4 months, MathLitera fortnightly. The most recent releases landed on October 8, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 3n or Not | MathLitera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/3n-or-not/id913003589/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 95.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Ad-supported | — |
| Size | 13 MB | 295 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ninicode](https://appshunter.io/developer/647989501) | [Famulite Lab. LLC](https://appshunter.io/developer/1579536267) |

## What reviewers say

### 3n or Not

[App page](https://appshunter.io/ios/app/3n-or-not/id913003589)

Test your quick thinking with this educational game.  It challenges you to rapidly identify if a given number is divisible by three. Perfect for practicing mental math skills.

**Highlights:** Quick number discrimination, Multiple of 3 identification, Mental math practice, Educational game

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

**In-app purchases:** none


### MathLitera

[App page](https://appshunter.io/ios/app/mathlitera/id6670330392)

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extra Favorite Slot 01 | $1.99 | one-time |
| Extra Favorite Slot 07 | $1.99 | one-time |
| Extra Favorite Slot 04 | $1.99 | one-time |
| Extra Favorite Slot 06 | $1.99 | one-time |
| Extra Favorite Slot 05 | $1.99 | one-time |
| Extra Favorite Slot 09 | $1.99 | one-time |
| Extra Favorite Slot 03 | $1.99 | one-time |
| Extra Favorite Slot 08 | $1.99 | one-time |
| Extra Favorite Slot 02 | $1.99 | one-time |
| Extra Favorite Slot 10 | $1.99 | one-time |
| イリス | $4.99 | one-time |


## Frequently asked questions

### Is 3n or Not free?

3n or Not is free to download, with no in-app purchases.

### Is MathLitera free?

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

### Do 3n or Not or MathLitera have ads?

3n or Not shows ads; MathLitera does not.

### Which is updated more often, 3n or Not or MathLitera?

3n or Not ships an update every 4 months, and MathLitera fortnightly. Most recently, 3n or Not was updated on October 8, 2026 and MathLitera on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*