# ilu vs Sumaddle

The clearest difference is review sentiment: Sumaddle at 95% against ilu's 69%. Sumaddle also leads on rating (4.9 vs 4.7). ilu's advantage is iOS requirement (9.0 vs 16.0). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. ilu sells 9 one-off in-app purchases and Sumaddle sells 15 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Sumaddle holds the better App Store score, 4.9 against 4.7. Both are backed by a comparable volume of ratings — 2.1K and 767 respectively. Written reviews point the same way: 69% of ilu's written reviews are positive against 95% of Sumaddle's.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 10, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | ilu | Sumaddle |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (2.1K ratings)](https://appshunter.io/ios/app/ilu/id1271512200/reviews) | **[4.9 (767 ratings)](https://appshunter.io/ios/app/sumaddle/id1552172214/reviews)** |
| Number of ratings | **2.1K** | 767 |
| Positive reviews | 69.0% of reviews | **94.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 535 MB | 30 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Brainium Studios LLC](https://appshunter.io/developer/300891405) | [Jonathan Buchanan](https://appshunter.io/developer/1540556286) |

## What reviewers say

### ilu

[App page](https://appshunter.io/ios/app/ilu/id1271512200)

This logic puzzle game challenges you to illuminate dark areas by strategically placing lights. As you terraform barren planets and spread light, watch them transform with vibrant, animated life. Discover clever solutions and enjoy a relaxing, dynamic experience.

**Highlights:** Infinite relaxing logic puzzles, Illuminate dark areas with light, Terraform barren planets, Discover clever solutions, Dynamic music, Animated hint system

**Features:** Vision Pro support

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Ad-Free Puzzles | $0.99 | one-time |
| Terra Suit | $0.99 | one-time |
| Turbo Suit | $1.99 | one-time |
| The Botanic | $1.99 | one-time |
| Pod | $2.99 | one-time |
| Spectral Suit | $3.99 | one-time |
| Chromus | $4.99 | one-time |
| Ayianna | $6.99 | one-time |
| Unlock Ad-Free | $7.99 | one-time |

**What reviewers like**

- 🌟 Beautiful graphics and visuals
- 🎶 Relaxing and soothing music
- 🧠 Challenging and stimulating puzzles
- 🆓 Free hints and no pay-to-win mechanics
- 🕹️ Simple but unique gameplay mechanics

**What reviewers complain about**

- 🤏 Small touch targets, especially on larger puzzles
- 🤔 Difficulty in distinguishing markers from lights
- 🔋 High battery consumption
- 🐛 Occasional crashes and glitches
- 📉 Lack of progress tracking or replay options

**Reported bugs**

- App crashes on launch for some users
- Placement of markers and lights not always registering correctly
- Recent update changed visuals in a way that made the game less clear

**Requested features**

- Zoom or pan functionality for larger puzzles
- Separate marker and light placement modes
- Progress tracking and ability to replay past puzzles
- More variety in background music tracks


### Sumaddle

[App page](https://appshunter.io/ios/app/sumaddle/id1552172214)

This logic puzzle game transforms pencil-and-paper challenges into interactive brain teasers. Fit number combinations to clues using pure logic, with no mental arithmetic required. Enjoy over 150 free puzzles of varying difficulty, with built-in help and offline play.

**Highlights:** Interactive logic puzzles, Number combination fitting, Pure logic solving, Built-in help and mistake correction, Over 150 free puzzles, Offline play, Ad-free experience

**Features:** Family Sharing

**In-app purchases (15)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quirky, Pack 5 | $0.99 | one-time |
| Very Difficult Puzzles | $0.99 | one-time |
| Quirky, Pack 1 | $0.99 | one-time |
| Premium 9x9 Puzzles, Pack 1 | $0.99 | one-time |
| Crafty, Pack 1 | $0.99 | one-time |
| Crafty, Pack 2 | $0.99 | one-time |
| Crafty, Pack 3 | $0.99 | one-time |
| Sneaky, Pack 1 | $0.99 | one-time |
| Sneaky, Pack 2 | $0.99 | one-time |
| Sneaky, Pack 3 | $0.99 | one-time |
| Tricky, Pack 1 | $0.99 | one-time |
| Tricky, Pack 2 | $0.99 | one-time |
| Tricky, Pack 3 | $0.99 | one-time |
| Assorted Puzzles | $0.99 | one-time |
| Puzzle Generator | $9.99 | one-time |

**What reviewers like**

- 👍 Fun and challenging game
- 👍 Clean and intuitive interface
- 👍 Helpful hint system
- 🚀 No ads or data collection
- 💡 Unique puzzle concept

**What reviewers complain about**

- 🐛 Automatic hints can be intrusive
- 🐛 Inability to replay completed puzzles
- 💡 Need more free/sample puzzles
- 💡 Difficulty progression could be improved

**Reported bugs**

- Losing progress when minimizing the app
- Inconsistent difficulty ratings

**Requested features**

- Ability to selectively pencil in notes
- More difficult puzzle options
- Synced progress across devices
- Detailed statistics and leaderboard


## Frequently asked questions

### Is ilu free?

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

### Is Sumaddle free?

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

### Which has better reviews, ilu or Sumaddle?

Sumaddle is rated higher. ilu averages 4.7 out of 5 from 2.1K ratings, while Sumaddle averages 4.9 from 767 ratings.

### Do ilu or Sumaddle have ads?

Neither ilu nor Sumaddle shows ads.

### Which is updated more often, ilu or Sumaddle?

ilu ships an update every 3 weeks, and Sumaddle every 3 weeks. Most recently, ilu was updated on September 10, 2026 and Sumaddle on September 25, 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.*