# CrazyStone DeepLearning Pro — user reviews > 28 indexed App Store user reviews of CrazyStone DeepLearning Pro by UNBALANCE Corporation, rated 4.30/5 from 23 ratings. - Source: https://appshunter.io/ios/app/crazystone-deeplearning-pro/id1160054151/reviews - App overview in markdown: https://appshunter.io/ios/app/crazystone-deeplearning-pro/id1160054151.md - Rating breakdown: 5★ 16 · 4★ 3 · 3★ 1 · 2★ 2 · 1★ 1 ## Newest reviews (8 of 28) ### 4/5 — About import/export ... *2018-03-21* I hesitated buying this for quite a while because of the negative reviews, especially regarding the SGF import/export capability. But I finally took a chance and am happy to say that they have fixed all of those issues. You can copy and paste to/from the clipboard to exchange games with other apps, export via email, load/save from iCloud and Dropbox (and probably other cloud drive apps, those are the only ones I tested), and it also works as an “Open with ...” target for other things like email attachments and web links. I’d recommend trying the free version of CrazyStone first and seeing if it works for you because the import/export features are the same there. The Pro version adds Analysis mode and Rating mode (which tracks your rating separately for 9x9, 13x13 and 19x19) and removes the ads found in the free version. As others have noted, the UI isn’t the greatest in the world, but it is functional when you get used to it. Even though it is quite expensive, I’m happy with the purchase, and it is at least much more affordable than the Steam version. ### 5/5 — Nützliches Update *2017-05-17* Der größte Vorteil der neuen Engine ist nicht die Stärke, sondern die Geschwindigkeit. Auf meinem Iphone 5s rechnet die Engine auf der höchsten Stufe max. 3 Sekunden und schlägt die alte Engine mit 20 Punkten. Auf dem Niveau 1D wurde es jedoch in der ersten Testpartie vom alten Programm mit Aufgabe geschlagen. Sehr nützlich und interessant ist die Analysefunktion, um Patzer und Alternativen zu entdecken. Zum aktuellen Update: SGF-Dateien können nun direkt in Crazy Stone importiert werden. Also auch aus Safari oder anderen Apps heraus. Nun kann man sehr leicht seine Online-Partien importieren und analysieren. Auch die Export-Funktion wurde erweitert: Ab sofort kann man seine Partien direkt auf dem Icloud Drive speichern oder die Datei in die Zwischenablage kopieren. Ich sage: Danke! ### 5/5 — Nice app *2017-03-24* Add option, that allows user to evaluate situation by putting stones manually ### 5/5 — Outstanding! *2017-01-27* This is by far the best app for GO players available(I have most). The analysis mode is a fantastic tool for any Kyu level player. Probably lower Dan level too. If you want to improve, play auto rating games and then analyze them. You WILL get stronger fast. It's pricey, but well worth it for the serious player. ### 4/5 — Needs file association for sgf files *2016-12-21* It shouldn't be so hard to open an sgf file with this app. Do a Google search for iOS file association. ### 5/5 — Impressionnant ! *2016-12-20* Niveau de jeu impressionnant, le niveau 5 dan ne semble pas exagéré (je suis 1 kyu / 1 dan KGS, et il me bat régulièrement avec 4 pierres de handicap en 19x19 sur mon iPhone ... !). Interface bien faite, analyse de parties assez bien également. Il joue aussi très naturellement et de façon "humaine" les niveaux plus bas (aux alentours de 1 kyu en tout cas). Bref, un peu cher mais superbe appli ### 5/5 — Excellent tool *2016-12-11, version 1.0.3* If the com level can be 7D and "hint" level abt 5D it would be perfect. ### 4/5 — Need fix bugs *2016-11-22, version 1.0.3* Miscalculation of territory during the game. Computer can not distinguish territory from dead and live group. Computer always plays crazy and irrational move when it's territories is far behind. ## Most critical reviews (10 lowest-rated) ### 1/5 — Impossible de faire analyser ses sgf par l’AI *2020-09-04* Je suis déçu, l’analyse des sgf ne fonctionne pas alors que c’est pour cela que j’avais acquis une licence ### 1/5 — Please update to the latest version v1.1.6 *2018-04-27* Please update to the latest version v1.1.6 ### 2/5 — Not optimized for iPhone X *2018-08-13* And has not been updated for 7 months. ### 2/5 — The Go is great, but the UI is user hostile *2017-02-07* Analyzing an existing SGF requires using a computer to sync files from iTunes (in 2017!), rather than allowing you to paste an SGF from the clipboard, or loading one from Safari. The analyze feature requires using another SGF editor like SmartGo to even see what alternate moves CrazyStone proposes, because (even on an iPad) the board coordinates are truncated and there's no indicator of "CS Best" on the board. (I'd like to see the top 3 moves, incidentally). These tiny things alone cause so much friction that it's very hard to enjoy the amazing benefits this app offers. A little bit of polish will go a long long way! ### 3/5 — So and so *2026-07-10* Could really do with an update. Analysing a game takes more than 10 steps - and going back to game mode another five. And that is just one example. Playing itself works rather well. ### 3/5 — Unable to load SGF file from Google drive(url). *2021-04-27, version 1.1.4* I found it is unable to load SGF file from the internet( cloud) although there is the function in load game. ### 3/5 — Great engine, but needs improved import/export *2017-04-10* Pros: It's very nice to have the ability to do basic blunder checking analysis on games, and as a DDK player I enjoy playing against the engine. Cons: The inability to import SGF in any way other than syncing through iTunes is a big disappointment. We need to be able to paste SGF as well as exporting to Crazy Stone from other apps, as well as export (with analysis, please!) SGF to other applications and not just via email. This could be a great app. As it stands, it's a great engine with a tolerable interface, and awful (almost non-existent) import/export capabilities. ### 3/5 — Bien, mais... *2017-04-09* À mon goût, l'interface est moche et peu ergonomique. D'autre part, je viens de lancer une partie où l'iphone joue contre lui-même en 5d et... impossible de l'arrêter!!! Pas de bouton, tout est désactivé O_o ! Si la partie dure une heure, je n'ai pas le choix, je dois attendre. Comment est-ce possible, au prix où est vendue l'app?!?!? Du coté du positif (j'ai quand-même mis trois étoiles), l'algorithme de jeu semble intéressant, les parties que j'ai faites m'ont bien amusé, et l'analyse n'est pas mal du tout. ### 3/5 — Good but *2016-11-21* I like to support the Go community. I buy new digital books to encourage publishers to bring more books to that format. I purchase software such as this for the same reason. I would have given this app 4-5 stars except their is a bit of a dishonest cash grab going on here. I bought Championship GO HD for around $10 then saw this as it was new. It's the same program except with an analysis option coded in. If they were treating their earlier adopters they could have added this as an in app purchase for another $10.00. Instead they made a entire new program and charged $23.00 for it. So only 3 stars for dishonesty... ### 3/5 — The real info *2016-10-14* When I clicked on 5d and no time limit, it only thought to 10 secs at maximum, and it wasn't 5d strength, there's options to give crazystone more time to think them being 10 secs, 20 secs, 30 secs and 60 secs.... I played regular crazy stone 5d ( 10 secs per move ) vs crazystone at 60 secs per move and the one with 60 secs of thinking time lost!...so I thought maybe the longer thinking time is just good against humans....as far as I can tell 10 per move isn't even of dan strength and 20 secs per move is 1d maybe 2d what's also strange is that it doesn't even think for the complete time limit it always leaves an extra 3 secs for no reason.....is it worth the 17 bucks yes if your looking to play a 2-3d level app, I have to do more testing, also I need to know if it uses the hardware from my iPad or if it's just a built in powerhouse.....idk so many questions need an answer.....not sure why this app doesn't go all the way to 7d....honestly though, wish you guys just gave an engine server option, but for free cause if 10'secs per move can beat 60 secs per movie I don't know who you expect would buy this if it's strength isn't even 4d nevermind 5d....maybe the time settings are just better against humans, maybe 30 secs per move is good in standard games, but why must I need to test these apps/engines on everyone to figure out its true strength?....I've tested enough now, 30 secs per movie it's a strong 3D, and that's the max it will be this app isn't 5d like it says. ## Most praised reviews (10 highest-rated) ### 5/5 — So far so good *2024-06-27, version 1.1.4* Fast and strong go app. But it cost 20 bucks ### 5/5 — Nach vielen Jahren immer noch mein Lieblings-Go *2023-07-07* Ja, inzwischen gibt es andere Apps, die viel stärker spielen. Es gibt auch Apps, deren Analysefunktion durchdachter ist. Was CrazyStone Go auszeichnet, ist der geniale Rating-Mode, der mir abhängig von meiner Spielstärke viele ähnlich starke Gegner gibt (etwa +-2 Kyu zu meinem geschätzten Rating mit entsprechend Vorgabevariationen). So kriege ich mal einen stärkeren Gegnern mit ein bisschen Vorgabe, mal schwächere umgekehrt, mal gleich starke, und kann immer versuchen, mein Rating zu verbessern. Analyse gibt’s auch, wenn auch rudimentär. Macht einfach mehr Spaß, als sich ein ums andere Mal von 9-dan Katago zerstören zu lassen. Das Brett ist gut designed, funktioniert gut auf Tablet und Handy. Nur, wenn Du 2-dan oder höher bist, ist’s vielleicht nicht der optimale Lehrer (hat wohl etwa 6-dan). ### 5/5 — Exactly what I wanted *2022-03-26* The ranked mode automatically adjusts the computer difficulty to your level (up to 5dan) as your rank is updated with each game and can be played on 9*9, 13*13 and 19*19 boards. ### 5/5 — So far so good *2021-06-04* I have enjoyed the layout and analytics when playing against the AI. sometimes I see not the best moves played by the AI, but perhaps this is appropriate for the difficulty level I have chosen. Great! ### 5/5 — Superb stand-alone iOS Baduk app *2021-02-26* I’ve owned & played CrazyStone for almost 2 years now. Runs seamlessly on iOS, I’m 7-8 kyu and can beat this app at only 6-7 kyu, no lower, so it’s pretty accurately rated. You set the computers strength by Dan-kyu, so great flexibility. It’s much stronger than me if I “open the throttle” on its engine & if you search YTube, can see older vids of BattsGo Dwyrin, Hajin Lee, Hanayeol, and other high Dan players engaging w CrazyStone. Although one can play bots, like OGS, those require internet or cell connection; CS is a standalone app that can be played anywhere without data connection. Simple setting, saves all your games in sgf, can play human v human if you want to play friend & have no real board or are traveling (train, etc). With SmartGo Kifu moving to new subscription format, CS may be the best one-time paid iOS Go app. I love it. No relationship to game creator, just happy customer. ### 5/5 — Very solid app. *2021-01-28* High price tag, but I splurged anyway. It’s six dollars a year for the premium subscription inside the non Pro version for comparison. It doesn’t actually say this anywhere, but FYI there are no ads like in the non Pro version. A major reason I bought it. I am SDK trying to improve with many small-board games played quickly. The AI is strong (and pleasantly quick) when it tries (high Dan setting), but will allow the occasional odd mistake at weaker settings (play a bad ladder, overlook a big capture). The rating system is very nice. No real bugs that I can find. GUI is a bit kitsch but not distracting. Haven’t tried SGF file management yet. ### 5/5 — Top Notch *2020-06-24* This is probably the best Go/Baduk app for IOS. Well worth the money for a solid, professional quality game with so many features. I spoke with UNBALANCE and they do indeed intend to keep up with bug fixes and IOS changes. I recommend this over the other subscription based version, but that’s a personal choice. The engine is more than strong enough for me. I especially enjoy the rating and analysis modes. Also, this version supports landscape. ### 5/5 — Great for training *2020-04-09* There are stronger apps out there now, but none that track your progress and automatically set up your games against a large selection of difficulty levels like this app. This app and SmartGo basically define my standards for what features I’m looking for in other go apps. Also “A Master of Go” is the strongest native go engine for iPhone... it’s just an iPhone implementation of the Leela Zero engine. I’m not strong enough to benefit from it though, and it’s lacking in features, so I still train on this app ### 5/5 — Super Go App mit Analyse Funktionen *2018-10-16* Mit dieser App hat man jederzeit einen starken Go Partner dabei. Die Analyse Funktionen sind zwar nicht ganz so praktisch wie zB mit Lizzie am PC, aber denoch sehr gut. Man kann mit der App auch sehr gut Taktiken üben, indem man zB 9x9 Partien im Rating Modus spielt und anschließend per Analyse seine Fehler aufdeckt und korrigiert. Eine rundum tolle Go App! ### 5/5 — 5kyu *2018-01-11* This app is wonderful for my level. --- *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 2026-09-06.*