# 4 = 1 vs TAC Academy

The clearest difference is update cadence: 4 = 1 at monthly against TAC Academy's every 16 months. TAC Academy's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

4 = 1 ships an update monthly, TAC Academy every 16 months. The most recent releases landed on October 12, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 4 = 1 | TAC Academy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 16 months |
| Size | 0 MB | 49 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Zoe Cutler](https://appshunter.io/developer/1616556209) | [Testpress Tech Labs LLP](https://appshunter.io/developer/1235683817) |

## What reviewers say

### 4 = 1

[App page](https://appshunter.io/ios/app/4-1-math-game/id6479671530)

**Features:** macOS Compatibility

**In-app purchases:** none


### TAC Academy

[App page](https://appshunter.io/ios/app/tac-academy/id6740345640)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 4 = 1 free?

4 = 1 is free to download, with no in-app purchases.

### Is TAC Academy free?

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

### Do 4 = 1 or TAC Academy have ads?

Neither 4 = 1 nor TAC Academy shows ads.

### Which is updated more often, 4 = 1 or TAC Academy?

4 = 1 ships an update monthly, and TAC Academy every 16 months. Most recently, 4 = 1 was updated on October 12, 2026 and TAC Academy on October 5, 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.*