# Number Sum - Math Puzzle Game — user reviews > 61 indexed App Store user reviews of Number Sum by Microjoy Games Limited, rated 4.60/5 from 2,265 ratings. - Source: https://appshunter.io/ios/app/number-sum-math-puzzle-game/id6465898279/reviews - App overview in markdown: https://appshunter.io/ios/app/number-sum-math-puzzle-game/id6465898279.md - Rating breakdown: 5★ 1,715 · 4★ 376 · 3★ 124 · 2★ 23 · 1★ 27 ## What do users think of Number Sum? Overall sentiment: neutral **Pros** - 🚀 Fast and responsive - ⭐ Fun and engaging gameplay - 💡 Helps improve math skills **Cons** - 🔍 Inconsistent difficulty levels - 🔋 High battery consumption - 🔍 Lack of challenge in later levels - 🔍 Repetitive ads even after paid removal **Commonly reported bugs** - Game crashes or freezes - Ads not removed after purchase **Most requested features** - Ability to choose difficulty level - More advanced gameplay modes - Improved ad-free experience ## Newest reviews (17 of 61) ### 3/5 — Dark screen option but crashes for my iPad. *2026-08-23, version 1.9.1* So happy to find this has a dark screen option. However it doesn’t rotate so one can play and charge at the same time and it crashed 5 times in a row after 30-45 seconds of play on the first Daily I attempted. Sadly unplayable at this time. ### 2/5 — Number Sum *2026-06-02, version 1.9.1* I used to play this game every day, at least the daily challenge. Now the daily challenge will not open. The square grid is in off center but there is only the large square not the small squares. Last week there was an update which solved the problem for a few days but now it’s messed up again. Will you please fix it or should i just delete it? ### 2/5 — Does not work anymore *2026-05-30, version 1.8.0* Up until May 27, everything worked well and the app was fun. But somehow, the display changed and there is no game to be played! You guys have to fix this! ### 3/5 — Défi quotidien *2026-05-30, version 1.8.0* Pourquoi je ne peut pas ouvrir le « défi quotidien »? ### 3/5 — Daily challenge stopped working *2026-05-29, version 1.8.0* Game was great but now the daily challenge is not updating. Just a gray square. Please fix ### 2/5 — You ruined it!!! 🤬 *2026-05-28, version 1.8.0* This has been my absolute favorite game for 2+ years. I have played well over 6000 games on the main game, plus every special release, and countless weekly challenges. Then my weekly challenge got stuck. It happens. But it always reset on Monday when the new set arrived. But for 2 weeks it didn’t leave the stuck puzzle leaving delete and download again as the only option! YOU CHANGED IT!!! Not the game itself, but now, regardless of the series, and regardless win or lose, I have to sit through an ad after EVERY PUZZLE! Before, as long as I was winning, there were no ads. I haven’t dumped the app yet, but I’m less inclined to even open it now. Most of the games that I download end up being dumped because I get fed up with the endless ads. Congratulations! You took the best game ever and turned it into an also ran. You just couldn’t let an advertising dollar get away and lost a user and some potential sales commissions from less frequent but more engaged ads. GREAT JOB!! 🤬🤬🤬 ### 3/5 — Needs more difficult options *2026-05-22, version 1.8.0* There was actually a numbers game like this that I preferred because it had more difficulty, but it threw ads at you at random times, interrupting play and train of thought. I could not handle that so I chose this one but I wish there were more difficult games. ### 3/5 — Nettes Konzept, nicht gut umgesetzt *2026-03-22* Eigentlich ist das Spiel gut, wie es ist. Aber die Level sind so einfach, dass kein Spielspaß aufkommt. Für eine halbe Minute Spiel guckt man sich auch keine halbe Minute Werbung an. ### 3/5 — 簡単すぎる *2026-02-06* 難易度の設定が低すぎると感じました。 簡単すぎる問題が続きすぎ、飽きてきました。 35です。 ### 3/5 — Why are there endless DS with this update? *2026-01-22, version 1.8.0* Ihave been playing the daily puzzle for more than three years and really enjoying it. Now, however, I have to watch ads before I can play the game. It says ads are only activated for hints (which I don’t use anyway) so why am I seeing an ad at the beginning when I haven’t requested any hints. I don’t see why I have to pay for no ads and in addition pay for hints after seeing an ad. ### 3/5 — Fun but frustrating *2025-12-14, version 1.7.1* Good game, when you get to play. I am fine with ads, but between every game? You play, you watch. Fun while it lasted, but I am deleting. ### 4/5 — Interesting *2025-10-11, version 1.7.1* However, I want to choose which level I play like in audio games ### 2/5 — Okay game, but … *2025-06-26, version 1.6.0* This game is worthwhile, yet the ads are CONSTANT and far out- weigh anything enjoyable in the game . I try to purchase no-ads options but still get ADS! Terrible and complete waste of time. ### 2/5 — Must watch ads no matter what *2025-06-05, version 1.6.0* I did the first 4 levels and was forced to watch an ad. The ad was longer than the time to play the level. The game seemed fun but that is ridiculous. No way. ### 1/5 — Ads Again After Paying for no Ads *2025-03-12, version 1.5.6* A few days ago I started getting a ads again even though I paid for no ads. That is unacceptable, I’ll need to see if I can get it fixed, or I’ll need to get a refund and uninstall. ### 1/5 — Interessant mais Malhonnête *2024-12-28, version 1.5.6* Trop de publicité. Même quand on paie pour. éliminer les annonces, elles reviennent très vite ### 1/5 — できない *2024-11-06* レベル１４４　おかしくないですか？ できないようにおもいますが… ## Most critical reviews (10 lowest-rated) ### 1/5 — Doesn’t work anymore *2026-05-30, version 1.9.0* Can no longer play. Only gives a blank puzzle. ### 1/5 — Black screen on Daily puzzle *2026-05-30, version 1.8.0* The Daily Puzzle has a black/black screen. Yesterday’s game and today’s game is blacked out. Please fix!! ### 1/5 — Suzi’s *2026-05-29, version 1.8.0* The game is not allowing me to play it. It just comes up with a gray blank square. I am very unhappy. ### 1/5 — Jo *2026-05-29, version 1.8.0* What happened to the game? There is no display except for a gray empty window. Haven’t been able to play for 2 days now. Ads are annoying, but the disappearance of the entire game calls for a review of options. At this rate it’s better to delete it. ### 1/5 — TOO MANY ADS *2026-04-14, version 1.8.0* Thought this game would be fun but played 4 rounds that took 1 minute and had to watch 15 second in between each round - really!!! No thanks ### 1/5 — Ads I the middle of a game *2025-12-04, version 1.7.1* Ads are fine before or after a game. NEVER in the middle. I like the idea of the game but the implementation is horrible. ### 1/5 — Pub *2025-11-04* Trop de pub ! ### 1/5 — Crash / Freeze & too many ads *2025-10-05, version 1.7.1* While the game had been enjoyable - fun enough to play many levels (& endure far too many ads) - the game has a crashing/freezing issue that began over the last few weeks. Attempted many issues to resolve, with the last resort being deleting & reinstalling (having to start over). It worked for one game session (6 levels), but the problems continue. Tried to contact support - but no reply. Too bad…have to permanently delete. ### 1/5 — Could have been fun but crashes a lot *2025-09-28, version 1.7.1* Don’t waste your time. Don’t download this game. In the middle of a board, the app will crash about 4 out of 5 times. After it crashes and when you restart the app because you live in hope, you then have to watch another ad to get back to the same board where nothing is saved, and you have to start it all over again. Then you’ll end up deleting this game the same day you downloaded just like I did. ### 1/5 — Démarrage impossible *2025-09-13* Depuis la récente mise à jour, le jeu ne démarre plus sur iPad mini 2 os 13.1. ## Most praised reviews (10 highest-rated) ### 5/5 — Broken or not broken *2026-06-02, version 1.9.0* Daily Challenge has been broken for a few days; please fix. Update: now fixed. Thanks Update 2: broke again. ### 5/5 — いいと思う *2025-02-13* お父さんに勝手に入れられたアプリだけど意外とハマる いいと思う。 広告は１ステージごとあるかないかくらい 私は気にならないかな 課金なしでもできる むずいとこもあるけど楽しいんじゃないかな 私的にはイベントいっぱいあると思う 最低でも一個。 んーでヒントがもらえるルーレット あれお気に入り 他にも役にたつ道具いっぱいあったりメニュー画面でも何回失敗したら明日とか入れてもいいと思う　けど 参考程度にお願いします。 ### 5/5 — Awesome *2024-10-07, version 1.5.6* This game is great if you enjoy number games. The ads only play at the end of your game. And it is only one ad. Very fast to click the button to continue playing which I love. ### 5/5 — Increasingly fun and absorbing! *2024-06-15, version 1.2.3* If you like adding things, this is the game for you!! ### 5/5 — Wonderful *2024-05-31, version 1.2.3* Fun to play ### 5/5 — Game rating *2024-04-29, version 1.2.2* At 1st, I didn’t understand the concept of the game. After playing a few games the concept was getting clearer. NOW?…. I love it ! ### 5/5 — Love this game! *2024-03-24, version 1.2.0* So fun calculating columns/rows to clear all non essential numbers. Relaxing, as there is no time limit or annoying ads! ### 5/5 — Fun game keeps my math skills sharp *2024-01-15, version 1.1.0* I struggle in math as a subject. This helps keep my mind sharp, I time myself to see if I can best my highest score ### 5/5 — Really Fun *2023-12-23, version 1.1.0* Fun game! Keeps my mind sharp ### 4/5 — Fun but ads *2026-06-28, version 1.9.1* This is an amazing game and highly addictive. The only thing is there are so many ads. That’s the only problem I have the game. I love a good challenge so this game is great. There are even some holiday puzzles for you to crack. Over all,number sum is an amazing game and I think everyone should try it out. --- *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 2026-08-28.*