# 90° vs Math Operators Puzzle (abcd=e)

The clearest difference is in-app purchases: Math Operators Puzzle (abcd=e) at none against 90°'s 10. Math Operators Puzzle (abcd=e) also leads on iOS requirement (11.0 vs 16.0). On price, ads and device support there is nothing between them.

Both are free to download. 90° sells 10 one-off in-app purchases. Math Operators Puzzle (abcd=e) asks for nothing beyond the download.

## The numbers

| Metric | 90° | Math Operators Puzzle (abcd=e) |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/90-tap-turn-survive/id6471336679/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 days | — |
| Monetization | Free | — |
| Size | 17 MB | 32 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sviatoslav Fil](https://appshunter.io/developer/889782477) | [Dhiraj Sharma](https://appshunter.io/developer/1612823569) |

## What reviewers say

### 90°

[App page](https://appshunter.io/ios/app/90-tap-turn-survive/id6471336679)

This one-tap arcade game challenges your reflexes to spin a box 90 degrees, dodge falling blocks, and collect stars. Master the simple controls to survive the escalating chaos and achieve high scores.

**Highlights:** One-tap 90-degree rotation controls, Collect stars, coins, and power-ups, Unlockable box skins and trails, Daily rewards and quests, Game Center leaderboards and friend challenges, In-game currency for continues

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 500 Coins | $0.99 | one-time |
| Heart Pack | $0.99 | one-time |
| Mono Theme | $0.99 | one-time |
| Candy Theme | $0.99 | one-time |
| Ocean Theme | $0.99 | one-time |
| 1,200 Coins | $1.99 | one-time |
| 2,500 Coins | $2.99 | one-time |
| Unlimited 1 Hour | $2.99 | one-time |
| 6,000 Coins | $5.99 | one-time |
| 15,000 Coins | $11.99 | one-time |


### Math Operators Puzzle (abcd=e)

[App page](https://appshunter.io/ios/app/math-operators-puzzle-abcde/id6475754976)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 90° free?

90° is free to download, with in-app purchases available.

### Is Math Operators Puzzle (abcd=e) free?

Math Operators Puzzle (abcd=e) is free to download, with no in-app purchases.

### Do 90° or Math Operators Puzzle (abcd=e) have ads?

Neither 90° nor Math Operators Puzzle (abcd=e) shows ads.

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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.*