Senryu Note vs Sudoku Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Senryu Note
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“Senryu Note” allows you to easily write down and save your senryu. (How to use) - If you put 5, 7, 5 in the three frames on the right side, the senryu will appear on the left side. The fourth frame on the right is the author's name. - Senryu can be saved in the list. In the list, you can delete, reorder, and save the list. You can also swipe right on an individual senryu to bring it back to the main screen. - You can browse your senryu, and switch between 1-line and 3-line displays. - You can also have the voice read out loud by pressing the "Voice" button. The type of voice can be changed in the device settings. - You can tweet your senryu by clicking the "Tweet" button. Hashtags can be changed in the settings screen.
Sudoku Generator
Generate and print multiple Sudoku puzzles on an A4 page. Customize grid sizes, difficulty, and layout for printable worksheets. Ideal for personal practice, classroom exercises, or creating puzzle collections.
- Batch printing of Sudoku puzzles
- Multiple grid sizes (3x3 to 20x20)
- Adjustable difficulty levels
- Smart A4 layout optimization
- High-resolution PNG export
- Direct AirPrint compatibility
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Generate multiple Sudoku puzzles and arrange them neatly on an A4 page. This app is designed specifically for creating printable Sudoku worksheets. Unlike traditional Sudoku apps, it does not focus on solving puzzles on the screen. Instead, it helps you generate multiple puzzles, arrange them automatically on A4 paper, and export or print the finished page. It is ideal for Sudoku fans who prefer paper puzzles, as well as teachers preparing classroom exercises and homework. Multiple Grid Sizes Choose from several puzzle sizes ranging from 3×3 to 10×10, plus three large-grid modes: • 12×12• 16×16• 20×20 Create smaller puzzles for casual practice or challenge yourself with large grids and extremely difficult puzzles. Smart A4 Layout The app automatically calculates an efficient A4 layout based on the grid size, number size, spacing, and number of puzzles. It makes better use of the available page space and helps fit more puzzles onto each sheet. Adjustable Difficulty Use the slider to set the empty-cell ratio from 20% to 80%. A lower ratio creates more accessible practice puzzles, while a higher ratio provides a greater challenge. Generate worksheets for different ages, skill levels, and teaching needs. Flexible Layout Controls • Adjust the number size• Change the space between puzzles• Use smaller numbers to fit more puzzles on each page• Preview the finished A4 page in real time• Check puzzle size and placement before printing High-Resolution Export and Printing When the layout is ready, you can: • Export a 300 DPI PNG image• Save the page to your photo library• Share worksheets with teachers, students, or friends• Print directly with AirPrint Great for: • Printing Sudoku puzzles in batches• Classroom exercises and homework• Logic and math practice• Children’s educational worksheets• Large-grid and extremely difficult Sudoku• Creating printable puzzle collections Generate, arrange, export, and print Sudoku worksheets from one app.
Screenshots
Verdict
The clearest difference is ads: Sudoku Generator at none against Senryu Note's shown. Sudoku Generator also leads on update cadence (every 2 days vs every 2 months). Senryu Note's advantage is iOS requirement (14.0 vs 17.6). On price, 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
Both are free to download. Senryu Note sells 1 one-off in-app purchase and Sudoku Generator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Senryu Note ships an update every 2 months, Sudoku Generator every 2 days. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.
| Parameter | Senryu Note | Sudoku Generator |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 2 months | Every 2 days — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 14.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 8 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Mihoko Araki | 云涛 贾 |
In-app purchases
Senryu Note
- No Ads$2.99
Sudoku Generator
- Unlimited Export$0.99









