# Calcudoku · Sudoku-like Puzzle — user reviews > 197 indexed App Store user reviews of Calcudoku · Sudoku by Matthew Murphy, rated 4.70/5 from 1,524 ratings. - Source: https://appshunter.io/ios/app/calcudoku-sudoku-like-puzzle/id1195710578/reviews - App overview in markdown: https://appshunter.io/ios/app/calcudoku-sudoku-like-puzzle/id1195710578.md - Rating breakdown: 5★ 1,214 · 4★ 204 · 3★ 48 · 2★ 21 · 1★ 37 ## What do users think of Calcudoku · Sudoku? Overall sentiment: positive **Pros** - 🤓 Challenging and engaging puzzles - 📈 Tracks progress and stats - 🧠 Exercises the brain - 🎨 Simple and clean design - 🕰️ Variety of puzzle sizes and difficulties **Cons** - 🔊 Loud and intrusive ads - 🤯 Confusing pencil mode/number entry controls - 🤖 Automatic note erasure issues - 🔍 Small text and UI elements on larger puzzles - 🤔 Lack of customization options (difficulty, operations) **Commonly reported bugs** - App crashes when using hint button - Incorrect math calculations in some puzzles - Blank screen issues after completing puzzles - Inconsistent recording of best times **Most requested features** - Add undo/redo functionality - Provide option to disable ads or pay for ad-free version - Allow customization of puzzle difficulty and operation types - Improve visibility and clarity of pencil mode indicator - Optimize UI for larger screens and older devices ## Newest reviews (13 of 197) ### 4/5 — Programming error *2026-08-10, version 1.40* This is a good game, but sometimes the 4x4 puzzles have more than one solution. ### 3/5 — No option to pay to remove ads *2026-07-10, version 1.40* Great game, let me pay to remove ads ### 3/5 — Full screen alert *2026-02-19, version 1.39* This app allowed a “browser-based scam page” today. I like this game, but had not played in some time. Yesterday the play was interrupted by a full screen alert, covering everything. Swipe up finally allowed me to exit the full screen. ### 4/5 — Answer check *2026-02-08, version 1.39* Why can we no longer tap the top right icon to see if our answers are correct? ### 4/5 — Great game but long ads *2026-01-03, version 1.39* This is a great game but no option to pay/purchase to get rid of ads. Some of the ads seem to go for like 5 minutes ### 3/5 — Good Puzzle but annoying adds *2025-12-28* The puzzles are well made offers optional hints and tracks progress over time. Biggest problem are the adds between puzzle rounds (mostly videos/intarctive puzzle games sequences) lasting for up to 30 seconds. Making the app almost unusable for me. ### 4/5 — Great game *2025-12-26, version 1.39* My first go-to app of the day. But has gotten buggy of late. Hope the developer has gotten wind of this. ### 2/5 — Serious flaw *2025-10-26, version 1.39* It’s not possible to arrange the order of penciled numbers to show how they interact with another cell. Deleted! ### 3/5 — Cannot access menu *2025-10-09, version 1.39* A great fun app but lately I mostly cannot access the menus in the upper right which kills the app for me. I will keep checking for fixes but without the menu it is pretty useless. ### 3/5 — Annoying adds *2025-09-19, version 1.38* Nice except for the annoying adds. Impossible to delete the adds. I would be happy to pay for a version ### 4/5 — Minus one for ads, but other than that, great! *2024-12-31, version 1.36* I really don’t like it when I have to watch an ad to get to the next puzzle, but at least the ads are short and the games are free, so it’s not a total deal breaker. If you like KenKen, this is it, even if it doesn’t have the same name. ### 5/5 — Love it! *2024-10-09, version 1.36* Love level 5 - not too easy but difficult enough to feel satisfying. Levels 6 and 7 are good when I have time. ### 5/5 — Brain Trainer *2024-10-08, version 1.36* I’m obsessed with this puzzle. I searched for this type of puzzle after playing similar ones on airline mags. It’s great that it offers you a choice of matrix size. It really challenges your brain, especially the 9x9 grid and trying to solve it without using notations or calculators, so you have to keep it in your head. I also enjoy the random mix of math operators, some addition or multiplication only, others mix it up with subtraction and division. You definitely learn the different logical techniques and I feel my aging brain has actually gotten stronger. My one request would be that if you enter a number accidentally in a square that doesn’t conflict with existing numbers, you could remove it without having the loss applied. ## Most critical reviews (10 lowest-rated) ### 1/5 — Bogus virus alerts *2026-06-06, version 1.40* App shows bogus virus alerts to sell bogus antivirus apps. ### 1/5 — Menu on top right does not roll down *2026-03-10, version 1.39* Strange but seems not to work as well as in the past. ### 1/5 — Mise à jour enrageante *2025-09-14, version 1.38* J’aimais beaucoup ce jeux mais maintenant, une musique énervante commence à jouer sans raison apparente. Je dois fermer l’application et la redémarrer pour arrêter cette musique et celle-ci recommence après un court moment.👎👎👎 ### 1/5 — Ads Not For Me *2025-08-15, version 1.38* Got the app. Played one round. Then a loooong ad popped up. I am not interested in a game that takes me longer to get through the ad than time it takes to complete a puzzle. So, I will delete it now ### 1/5 — Ads? *2025-08-13, version 1.38* Downloaded the game based on good ratings. After opening the app for the first time and clicking a quick 3x3 game, a ridiculously long ad started to play. I hadn’t been in the app more than 60 seconds and I could tell the ads would be a PITA. The low star reviews here confirm this has apparently been an ongoing issue for years. ### 1/5 — Ads are too much *2025-04-23, version 1.38* The game is great, but After each game it forces you into some game that there is no easy way to abort. Killing the program and restarting is the easiest and fastest way to start another game. ### 1/5 — Used to be great, now not so much *2024-11-09, version 1.36* I loved this game and played it frequently. Now with the new super long ads after each game it is annoying but worse than that they crash the program and force me to delete and reload the program. I understand the need for the ads but if they prevent people from playing the game then how does that benefit anyone? Previously I would have given the game 5 stars but now I have to give it 1. Hopefully this will get the attention of the developers and they’ll fix things. ### 1/5 — Bof *2024-07-13* Vous insistez pour que je vous note alors je met une mauvaise note. Réinitialise tous le temps les trophées tourne sur 5 puzzle alors on les connais vite par cœur. Le jeux est bien dans le principe mais le développement est pas du tout là. ### 1/5 — Scam Notification *2024-03-19, version 1.35* Got a flashing red notification in the app. When I clicked it, it loaded a scam Amazon gift card survey. Not sure if it was hacked or is intentional, but didn't feel comfortable having an app that does that on my home screen. Too bad, I did enjoy the game. ### 1/5 — App crashes *2023-11-09, version 1.34* App crashes when Hint button is pressed. Developer unresponsive to issue I reported! Otherwise, not a bad puzzle app. ## Most praised reviews (10 highest-rated) ### 5/5 — for people that struggle with math 🩷 *2026-07-19, version 1.40* I struggle with math and my aunt is a math teacher and she was playing this game showing one of her students the game. I ask what game are y’all playing she said Calcudoku I said oh . So I downloaded it , it is fun and helpful and I got better grades in my class after playing this game please download game if u struggle with math !!!!!!!! 🩷🩷🩷🩷🩷👌👌 ### 5/5 — Fun puzzle *2026-04-28, version 1.40* Calcudoku is challenging and fun ### 5/5 — How can I remove ads? *2026-04-01, version 1.40* I found this recently and love it, except that after I do a few puzzles on my iPad, full-screen game ads come up with no way to get rid of them or to return to the puzzle! The interface is good and I love the choice of grid sizes. I would gladly pay to buy it. ### 5/5 — Yes *2025-08-06, version 1.38* For those of you who like kenken…this is kenken. Gets the neurons firing. Enjoyable. Even tells you where you made errors if you want. ### 5/5 — Memory *2025-04-02, version 1.38* I’m glad I found this app. It helps me whine down and works my mathematical memory. It has a very simple design which I love. I’m looking forward to a dark mode so it’s not so bright at night. ### 5/5 — Nice brain puzzle *2025-02-08, version 1.36* A nice challenge, ads at the end only so not distracting ### 5/5 — Wonderful *2025-01-05, version 1.36* Wow so good ### 5/5 — 재밋엉용 *2024-12-21* 광고는 좀 나오지만 재밌어요 ### 5/5 — Calculator *2024-11-06, version 1.36* The only suggestion I have is to allow us to move the calculator around on the screen so as not to block the squares we are working on. Otherwise an outstanding product. ### 5/5 — Interessante *2024-11-06* Ótimo --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-09.*