# Sudoku vs NoteLoop Practice

The clearest difference is in-app purchases: NoteLoop Practice at none against Sudoku's 10. NoteLoop Practice also leads on update cadence (fortnightly vs monthly). Sudoku's advantage is iOS requirement (15.6 vs 18.0). On price, ads and device support there is nothing between them.

Both are free to download. Sudoku sells 10 in-app purchases, starting at $2.99 per month. NoteLoop Practice asks for nothing beyond the download.

Sudoku ships an update monthly, NoteLoop Practice fortnightly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Sudoku | NoteLoop Practice |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (4.3K ratings)](https://appshunter.io/ios/app/sudoku-no-ads/id1533935003/reviews)** | — |
| Number of ratings | **4.3K** | — |
| Positive reviews | 46.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Fortnightly** |
| Monetization | Subscription | — |
| Size | 16 MB | 3 MB |
| Requires iOS | **15.6** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Beijing Free Calculator Technology Co., Ltd.](https://appshunter.io/developer/1457813265) | [Dong Ju Baek](https://appshunter.io/developer/1853460959) |

## What reviewers say

### Sudoku

[App page](https://appshunter.io/ios/app/sudoku-no-ads/id1533935003)

Engage in a classic Sudoku experience with multiple difficulty levels suitable for all ages. Enjoy a clean interface, track your game history, and access unlimited solutions with a yearly subscription.

**Highlights:** Multiple difficulty levels, Beautiful and concise interface, Game history tracking, Unlimited Sudoku solutions, Ad-free experience

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advanced features-1 month | $2.99 | per month |
| Advanced features-all year | $12.99 | per year |
| 数独高级会员-月 | $1.99 | one-time |
| 数独高级会员-年 | $9.99 | one-time |
| Sudoku Monthly Membership | $9.99 | one-time |
| Beginner Skill Course | $9.99 | one-time |
| Permanent Purchase | $14.99 | one-time |
| Sudoku Year Member | $29.99 | one-time |
| Sudoku Year Member | $49.99 | one-time |
| All Skill Courses | $59.99 | one-time |

**What reviewers like**

- 🚀 No ads
- 👍 Simple and straightforward
- 👍 Variety of difficulty levels
- 👍 Separate notes and final number inputs
- 👍 Good for practicing and improving skills

**What reviewers complain about**

- 🐛 Repeated puzzle layouts
- 🐛 Bugs and errors in puzzle generation
- 🔒 Requires payment to access basic features (sound, difficulty settings)
- 👎 Large gap in difficulty between easy and medium levels
- 👎 Inability to undo/reset a game in progress

**Reported bugs**

- Puzzles with no unique solution
- Game resets when app is closed
- Candidate numbers disappearing unexpectedly
- Incorrect highlighting of mistakes

**Requested features**

- Ability to select and mark multiple cells
- Option to view statistics and compare scores
- More granular difficulty settings between easy and hard
- Ability to save and resume an in-progress game
- Explanations for advanced solving techniques


### NoteLoop Practice

[App page](https://appshunter.io/ios/app/noteloop-practice/id6770863306)

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

**In-app purchases:** none


## Frequently asked questions

### Is Sudoku free?

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

### Is NoteLoop Practice free?

NoteLoop Practice is free to download, with no in-app purchases.

### Do Sudoku or NoteLoop Practice have ads?

Neither Sudoku nor NoteLoop Practice shows ads.

### Which is updated more often, Sudoku or NoteLoop Practice?

Sudoku ships an update monthly, and NoteLoop Practice fortnightly. Most recently, Sudoku was updated on October 29, 2026 and NoteLoop Practice on October 24, 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.*