Sarotis vs Sudoku Solver
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sarotis
Easily read, write, and manage NFC tags. Save tag data, import/export information, and clear or lock tags. Supports various data types like contacts, web links, and Wi-Fi configurations.
- Write/Read NFC Tags (NDEF Format)
- Save and Import NFC Tag Data
- Export Data to CSV
- Clear and Lock NFC Tags
- Text-to-Speech for Read Data
- Create vCards, Web Links, Wi-Fi, and more
Read full descriptionHide full description
With Sarotis - NFC Writer / Reader you are able to write / read your NFC Tags. Additional, you have the ability to save your NFC Tags and write that data to other NFC Tags. The records of scanned NFC Tags can be opened directly, e.g. read contact record can be imported to your contacts or you can execute Siri Shortcuts directly in the app. Features - Write / Read NFC Tags (NDEF Format) - Save NFC Tag data - Import NFC Tag data - Export NFC Tag data (CSV file) - Load saved NFC Tag data and write it to other NFC Tags - Open read data directly - View / Copy raw data - Clear NFC Tags - Lock NFC Tags - Read out scanned NFC Tags (Text to speech) - NFC Tag history (read / write) - Protect NFC Tag with password Section Read NFC - Scan vCards and import it to your contacts - Open locations in map - Open Weblinks - Start FaceTime calls - Start phone calls - Send text messages (SMS) - Read plain text - Read and open eMails - Read Bluetooth - Read Wifi and connect - Read hex data Section Write NFC - Create vCards and write them to NFC Tags - Create locations from a map - Create Siri Shortcuts - Create weblinks - Create FaceTime calls - Create text messages (SMS) - Create eMails - Create plain text - Create phone calls - Create Bluetooth - Create Wifi - Create hex data - Create social media quick links For feedback or feature requests please use the feedback section in the app or send an eMail to support@sarotis-nfc.de. If you like the app, please rate it in the App Store to support future development.
Sudoku Solver
Read full descriptionHide full description
The only scanner that solves a Samurai. Point your camera at a printed Sudoku and get the solution. Not just the standard 9×9 — Sudoku Solver reads the five-grid Samurai too, the one no other scanner will touch. HOW IT WORKS Hold your phone over the puzzle. It finds the grid, reads the digits, and works out the answer — usually in about a second. Nothing to type in, nothing to line up. IT TELLS YOU HOW, NOT JUST WHAT Every solution names the techniques the puzzle actually needed — naked singles, hidden pairs, X-Wings — so you can see where you were stuck. Want to work through it properly? One tap opens the exact board in Samuraiku and walks you through it step by step. SHARE THE ANSWER Send or print a clean solution card with the original clues in bold, so you can check your own work against it. WHAT IT DOESN'T DO No ads. No subscription. No account. Nothing is uploaded — the camera image never leaves your phone, and it's never saved to your photo library. You pay once. Classic 9×9 and Samurai. Works offline. Made by the people behind Samuraiku.
Screenshots
Verdict
The clearest difference is price: Sarotis at Free against Sudoku Solver's $3.99. Sarotis also leads on iOS requirement (13.0 vs 17.0). Sudoku Solver's advantage is in-app purchases (none vs 4). On update cadence, 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
Sarotis is free to download; Sudoku Solver costs $3.99 up front. Sarotis sells 4 in-app purchases, starting at $1.99 per month. Sudoku Solver asks for nothing beyond the download.
Sarotis ships an update every 4 weeks, Sudoku Solver every 2 months. The most recent releases landed on October 7, 2026 and October 14, 2026 respectively.
| Parameter | Sarotis | Sudoku Solver |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 3.9 (7 ratings) — better | — |
| Positive reviews | 78.9% of reviews | — |
| Number of ratings | 7 — better | — |
| Update frequency | Every 4 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 8 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Tobias Hauss | Karl Groethe |
In-app purchases
Sarotis
- Sarotis PRO – Monthly Subscription$1.991 Month
- Sarotis Pro - yearly subscription3 Days trial$11.991 Year
- Sarotis PRO (All Features)$7.99
- Sarotis PRO Lifetime$24.99
Sudoku Solver
No in-app purchases









