# Not Not vs Light Memory.

The clearest difference is rating: Not Not at 4.7 against Light Memory.'s 3.0. Not Not also leads on ratings volume (1.1K vs 1). Light Memory.'s advantage is ads (none vs shown) and update cadence (every 5 days vs every 2 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Not Not sells 8 one-off in-app purchases and Light Memory. sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Not Not holds the better App Store score, 4.7 against 3.0. That said, the two scores are not equally well evidenced: Not Not has 1.1K ratings behind it against 1, so its average is the more settled of the two.

Not Not ships an update every 2 weeks, Light Memory. every 5 days. The most recent releases landed on October 21, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Not Not | Light Memory. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (1.1K ratings)](https://appshunter.io/ios/app/not-not-a-brain-buster/id1107589341/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/light-memory/id1316918974/reviews) |
| Number of ratings | **1.1K** | 1 |
| Positive reviews | 78.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 75 MB | 99 MB |
| Requires iOS | 15.0 | **6.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Alternative Shift](https://appshunter.io/developer/394617049) | [108km Tech Ltd](https://appshunter.io/developer/331009609) |

## What reviewers say

### Not Not

[App page](https://appshunter.io/ios/app/not-not-a-brain-buster/id1107589341)

Engage your brain with a logic and orientation puzzle game. Swipe your character according to increasingly complex instructions to reach higher levels. Offers two addictive game modes for a satisfying challenge.

**Highlights:** Logic and orientation challenges, Swipe-based character control, Increasingly complex instructions, Classic game mode, Challenge game mode, Addictive gameplay

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $0.99 | one-time |
| Unlock World : The Liar | $0.99 | one-time |
| Emergency Kit | $0.99 | one-time |
| First Aid Kit | $0.99 | one-time |
| Survival Kit | $2.99 | one-time |
| Complete Kit | $4.99 | one-time |
| Immortal Kit | $9.99 | one-time |
| Ultimate Kit | $29.99 | one-time |

**What reviewers like**

- 🧠 Challenges the brain
- 🕹 Engaging and addictive gameplay
- 🕰 Good time-killer
- 👍 Simple yet effective game mechanics

**What reviewers complain about**

- 📺 Excessive ads and monetization
- 🐛 Bugs and technical issues
- 🔄 Language settings reset after each session
- 🔍 Difficulty progression can be uneven

**Reported bugs**

- Game freezes on startup
- Purchased ad removal not working
- Inconsistent swipe/input detection

**Requested features**

- More levels and game modes
- Option to disable music/sound effects
- Improved accessibility for color-blind players


### Light Memory.

[App page](https://appshunter.io/ios/app/light-memory/id1316918974)

Guide a small light creature through mysterious lands, collecting keys and overcoming environmental challenges. This physics-based adventure game offers 80 levels of exploration and action with simple visuals.

**Highlights:** Physics-based gameplay, Action and exploration mix, Collect keys to reach destinations, 80 challenging levels, Simple visual design, Universal app support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ADs | $0.99 | one-time |
| Unlock All Levels | $1.99 | one-time |


## Frequently asked questions

### Is Not Not free?

Not Not is free to download, with in-app purchases available.

### Is Light Memory. free?

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

### Which has better reviews, Not Not or Light Memory.?

Not Not is rated higher. Not Not averages 4.7 out of 5 from 1.1K ratings, while Light Memory. averages 3.0 from 1 ratings.

### Do Not Not or Light Memory. have ads?

Not Not shows ads; Light Memory. does not.

### Which is updated more often, Not Not or Light Memory.?

Not Not ships an update every 2 weeks, and Light Memory. every 5 days. Most recently, Not Not was updated on October 21, 2026 and Light Memory. on September 30, 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.*