Comparison

Sudoku vs NoteLoop Practice

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sudoku

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
Read full description

A new generation of classic Sudoku games: 1. A variety of difficulties, anyone from children to masters can play 2. Beautiful and concise 3. Allows you to see the history of your past Sudoku games SUBSCRIPTION PRICING AND TERMS This App offers an auto-renewing subscription to provide you with unlimited access to the sudoku solution . the price is $4.99/Year for unlocking all content and features. This price is for United States customers. Pricing in other countries may vary and actual charges may be converted to your local currency depending on the country of residence. Payment will be charged to iTunes Account at confirmation of purchase. Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Read more about our terms and conditions here: Terms of service: https://weibo.com/5580956204/I55tg3VVB Privacy policy: https://weibo.com/5580956204/HB9vBf59c Email: From2019219@gmail.com

About

NoteLoop Practice

Features
Read full description

NoteLoop Practice helps you remember what matters through simple, effective flashcard review. Whether you're studying for exams, learning a language, preparing for interviews, or mastering professional skills, NoteLoop Practice makes it easy to create flashcards and review them consistently.

Screenshots

Sudoku4 screens
NoteLoop Practice4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

Sudoku ships an update monthly, NoteLoop Practice fortnightly. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Sudoku versus NoteLoop Practice: the parameters behind the verdict, then further details
ParameterSudokuNoteLoop Practice
PriceFreeFree
Rating4.1 (4.3K ratings) — better—
Positive reviews46.6% of reviews—
Number of ratings4.3K — better—
Update frequencyMonthlyFortnightly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscription—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better18.0
Further details — not scored
Size16 MB3 MB
Age rating4+4+
DeveloperBeijing Free Calculator Technology Co., Ltd.Dong Ju Baek

Bugs and requests

Sudoku

Reported bugs

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

Requested features

5 requests
  • 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

Not enough reviews yet to summarise bugs or requests.

In-app purchases

10 purchases

Sudoku

Subscriptions2
  • Advanced features-1 month$2.991 Month
  • Advanced features-all year$12.991 Year
One-time8
  • 数独高级会员-月$1.99
  • 数独高级会员-年$9.99
  • Sudoku Monthly Membership$9.99
Show 5 more
  • Beginner Skill Course$9.99
  • Permanent Purchase$14.99
  • Sudoku Year Member$29.99
  • Sudoku Year Member$49.99
  • All Skill Courses$59.99
None

NoteLoop Practice

No in-app purchases

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 28, 2026 and NoteLoop Practice on October 24, 2026.

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