Comparison

Notation Chess vs Sudoku

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

Head to head
About

Notation Chess

Practice chess visualization and play games using only standard notation, directly from your Apple Watch. This app offers adjustable difficulty and engine settings, with the ability to review moves and peek at the board when needed.

Highlights
  • Play chess on Apple Watch
  • Practice with standard chess notation
  • Adjustable difficulty and engine settings
  • Review move history
  • Peek at the board feature
  • Undo moves
Features
Read full description

Play notation-first chess on the go, directly from your Apple Watch. Notation Chess is designed for players who want to practice visualization and play without relying on a full board view. Choose your color and difficulty, select moves using standard chess notation, and review your move history as the game progresses. The app is powered by the lightweight Chal chess engine, with adjustable search depth and move variety settings. When you need a quick visual reference, use Peek at Board to check the current position. You can also undo moves and start a new game at any time. Features - Play chess on the go from Apple Watch - Practice using standard chess notation - Powered by the Chal chess engine - Choose your color and difficulty level - Review the complete move history - Peek at the board when needed - Undo moves - Adjust engine search depth and move variety

About

Sudoku

Features
Read full description

Make room for focus with Sudoku - a quiet puzzle break, wherever you are. Play every puzzle offline on iPhone and iPad. No ads, no account required, and no connection needed to keep playing. FIND YOUR CHALLENGE Explore 100 difficulty levels, all available from the start. Enjoy an easy break or take on a more demanding board. PLAY AT YOUR PACE Use pencil notes, undo moves, erase entries and ask for hints. There’s no countdown or mistake limit. Your progress saves automatically, so you can pause and return whenever you like. MAKE IT YOURS Choose from six colour themes with light and dark appearances. Adjust mistake highlighting, matching-number highlights and haptic feedback. SEE YOUR PROGRESS Track completed puzzles, streaks, play time and performance by difficulty. Statistics distinguish assisted completions from puzzles solved without hints. KEEP YOUR PUZZLE CLOSE See your session’s status with Live Activities. Use Siri and Shortcuts to resume, pause, start a puzzle or check your progress. Set an optional daily reminder when you’d like a little encouragement. CONNECT WHEN YOU CHOOSE Sign in to Game Center to share competitive progress and earn achievements when online. Your puzzles and local statistics remain available offline. A little focus. A satisfying challenge. One square at a time.

Screenshots

Sudoku4 screens

Verdict

The call

The clearest difference is iOS requirement: Notation Chess at 13.0 against Sudoku's 26.0. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 7 level
Notation Chess versus Sudoku: the parameters behind the verdict, then further details
ParameterNotation ChessSudoku
PriceFreeFree
Rating5.0 (2 ratings) — better—
Number of ratings2 — better—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPod, Apple WatchiPhone, iPad, Apple Watch, Vision Pro — better
Requires iOS13.0 — better26.0
Further details — not scored
Size2 MB4 MB
Age rating4+4+
DeveloperZheng LiangAzizbek Asadov

In-app purchases

None

Notation Chess

No in-app purchases

None

Sudoku

No in-app purchases

Questions

Is Notation Chess free?
Notation Chess is free to download, with no in-app purchases.
Is Sudoku free?
Sudoku is free to download, with no in-app purchases.
Do Notation Chess or Sudoku have ads?
Neither Notation Chess nor Sudoku shows ads.

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