# One Plus Two = 3 vs Brain training

The clearest difference is update cadence: Brain training at every 5 weeks against One Plus Two = 3's every 2 months. Brain training also leads on iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. One Plus Two = 3 sells 2 one-off in-app purchases and Brain training sells 8 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

One Plus Two = 3 ships an update every 2 months, Brain training every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | One Plus Two = 3 | Brain training |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (4 ratings)](https://appshunter.io/ios/app/one-plus-two-3/id1473746933/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 27 MB | 135 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alexey Izvalov](https://appshunter.io/developer/1437172357) | [FourM, K.K.](https://appshunter.io/developer/1553438500) |

## What reviewers say

### One Plus Two = 3

[App page](https://appshunter.io/ios/app/one-plus-two-3/id1473746933)

Engage your mind with a unique puzzle game that blends numbers and letters. Solve challenges by translating numerical values into descriptive phrases using a given set of letters. Earn power-ups as you progress through increasingly complex mathematical and linguistic riddles.

**Highlights:** Number to phrase translation, Mathematical operations integration, Use all provided letters, Result must match target number, Power-up rewards, Hidden gameplay hints

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Hint Bulbs | $0.99 | one-time |
| 1000 Hint Bulbs | $4.99 | one-time |


### Brain training

[App page](https://appshunter.io/ios/app/brain-trainingthe-number-line/id1620506179)

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 80 diamond | $0.99 | one-time |
| 500 diamond | $4.99 | one-time |
| バトルパス | $4.99 | one-time |
| 1200 diamond | $8.99 | one-time |
| エルフ | $12.99 | one-time |
| 2500 diamond | $17.99 | one-time |
| 6500 diamond | $44.99 | one-time |
| 14000 diamond | $89.99 | one-time |


## Frequently asked questions

### Is One Plus Two = 3 free?

One Plus Two = 3 is free to download, with in-app purchases available.

### Is Brain training free?

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

### Do One Plus Two = 3 or Brain training have ads?

Both One Plus Two = 3 and Brain training show ads.

### Which is updated more often, One Plus Two = 3 or Brain training?

One Plus Two = 3 ships an update every 2 months, and Brain training every 5 weeks. Most recently, One Plus Two = 3 was updated on November 3, 2026 and Brain training on November 3, 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.*