# 90° vs Mnemonics!

The clearest difference is in-app purchases: Mnemonics! at none against 90°'s 10. Mnemonics! also leads on ratings volume (5 vs 1). 90°'s advantage is update cadence (every 6 days vs every 3 weeks). On price, rating, ads and monetization model there is nothing between them.

Both are free to download. 90° sells 10 one-off in-app purchases. Mnemonics! asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 90° against 5.0 for Mnemonics!. That said, the two scores are not equally well evidenced: Mnemonics! has 5 ratings behind it against 1, so its average is the more settled of the two.

90° ships an update every 6 days, Mnemonics! every 3 weeks. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | 90° | Mnemonics! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/90-tap-turn-survive/id6471336679/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/mnemonics/id6478067329/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 17 MB | 12 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Sviatoslav Fil](https://appshunter.io/developer/889782477) | [Nishat Majid](https://appshunter.io/developer/1727207034) |

## 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 |


### Mnemonics!

[App page](https://appshunter.io/ios/app/mnemonics/id6478067329)

This timed object matching game is designed to enhance your memory and focus. It presents increasingly challenging patterns and colors to improve your hippocampus function and peripheral vision, leading to better memorization skills.

**Highlights:** Timed object matching gameplay, Improves memory and focus, Enhances peripheral vision, Challenging patterns and colors, Adjustable difficulty levels

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

**In-app purchases:** none


## Frequently asked questions

### Is 90° free?

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

### Is Mnemonics! free?

Mnemonics! is free to download, with no in-app purchases.

### Which has better reviews, 90° or Mnemonics!?

90° and Mnemonics! are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do 90° or Mnemonics! have ads?

Neither 90° nor Mnemonics! shows ads.

### Which is updated more often, 90° or Mnemonics!?

90° ships an update every 6 days, and Mnemonics! every 3 weeks. Most recently, 90° was updated on November 7, 2026 and Mnemonics! on November 4, 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.*