# KeyTuner — user reviews > 171 indexed App Store user reviews of KeyTuner by TimperLabs LLC, rated 4.70/5 from 1,737 ratings. - Source: https://appshunter.io/ios/app/keytuner/id1328712601/reviews - App overview in markdown: https://appshunter.io/ios/app/keytuner/id1328712601.md - Rating breakdown: 5★ 1,455 · 4★ 170 · 3★ 50 · 2★ 19 · 1★ 43 ## What do users think of KeyTuner? Overall sentiment: positive **Pros** - 🚀 Accurate and precise tuning - 👍 Simple and user-friendly interface - 🎨 Supports a variety of instruments - 💰 Free with no ads - 🔍 Detailed frequency and cents display - ⚙️ Customizable settings and options **Cons** - 🐛 Occasional issues with note recognition - 🔊 Microphone sensitivity can be inconsistent - 🔢 Limited support for alternate tunings/temperaments **Commonly reported bugs** - App crashes or freezes on some devices - Microphone input not working correctly **Most requested features** - Ability to save custom tuning profiles - Metronome or rhythm generator function - Support for more advanced instrument types ## Newest reviews (19 of 171) ### 5/5 — From a Pro *2026-01-09, version 2.1.1* I’ve being playing for over 50 years, when we used to tune by ear. This app is the best so far in the category, I’ve being using for a while and one word will resume my happiness, precision! Thank you for this great app! Marco Castillo ### 3/5 — Hood *2025-12-30, version 2.1.1* It’s not bad ### 5/5 — Favorite tuner app *2025-12-07, version 2.1.1* App is no fuss user friendly and accurate ### 5/5 — Simple and reliable *2025-11-25, version 2.1.1* Besides tune name and frequency display, it also shows the swing range of each individual keys, which made the tune more accurate. ### 5/5 — Enjoying *2025-11-19, version 2.1.1* I'm a long time pro I use this app without any thought. It just does what I need without any ruffles issues . Seems flawless ### 5/5 — The only way you will be getting the money from your employer will iiu is this guy was the one I tho *2025-11-18, version 2.1.1* The most common type for a human being to have is this guy has the same face and looks so good on the left and his hair and hair looks like he is you are so welcome to join the group and join the fun with the boys if you’re still in school or not and if you’re still working on your project let us have some ideas of your ideas on what we should make of this year so you know who we could be able do a group of friends or a team that are really fun with your idea that we you know how much money we can spend to buy you and what kind you need for a group or whatever we have in our group that is you know how ### 5/5 — Great Tuner *2025-11-09, version 2.1.1* Probably one of the best free tuners that I’ve tried. U don’t get ads either which is just awesome. ### 5/5 — Perfect for Trumpet *2025-11-06, version 2.1.1* Was looking for a tuner that could be transposed for other instruments, and shows the note I’m playing and if I’m in tune in a visual way. Wanted to be able to see it in my peripheral. Helpful if you don’t have the best ear and are uncertain of your pitch at times. ### 5/5 — 設定しておくとそのままになりしかもパッと開いてすぐ使える *2025-10-20* とにかくいい！そしてなぜデペロッパはレビューいただきありがとうございましたとしか言っとらん？ ### 5/5 — Straightforward and easy to use *2025-10-03, version 2.1.1* Keeps it simple, clean interface and no ads. Love it for tuning my harmonica or finding chords. ### 5/5 — 凄い *2025-10-01* オタマトーンのチューニングに使っています、日本語で表示してくれるので、助かります。 ### 5/5 — Review *2025-09-07, version 2.1.1* This is sooooo good it helps me tune my piano which is pretty hard to tune!!❤️♾️ ### 4/5 — Gyat *2025-09-03, version 2.1.1* Very skibiti sigma ### 5/5 — Useful, and intuitive *2025-08-28, version 2.1.1* Very useful and easy to use - that’s a great app I use to tune my piano ### 3/5 — Great *2025-08-24, version 2.1.1* Sometimes, it changes, I play the harp so she. I play a string, after once it’s fading (the sound) it the tuner changes, it’s weird, so ai do t know if it was tuned or not ### 5/5 — 乐器调音大师 *2025-08-20* 好东东！很有帮助，发音和显示准确，业余调琴变大师！ ### 5/5 — Good app! *2025-08-04, version 2.1.1* I’d been struggling with a very unresponsive tuner app for years. Went searching for a better one and found this. It’s great for working on my tone definition on my saxes, really responsive and I like the easy transposition too. I also like the fact that the developer responds to some comments - many developers don’t bother ### 5/5 — シンプルで使いやすい *2025-07-31* エフェクトがシンプルで無駄がなく、使いやすい。 反応も良いです。 純正律にも合わせられるチューナーを探していて見つけました。 これで無料とはありがたい限りです。 ### 5/5 — One of the best free piano tuner. *2025-07-16, version 2.1.1* As a DIY amateur pianist and father of two young piano learners at home, this is the must have app I would recommend to beginner DIY piano tuners. ## Most critical reviews (10 lowest-rated) ### 1/5 — bro的软件是开发给日本人的 *2025-08-12* 红针跳来跳去，一点也不稳；调出来的音要么三根弦拍频严重要么全体偏低 ### 1/5 — 인토네이션 피치 안맞아요… *2023-12-16, version 2.1.1* 악기 튜닝하는데 하도 이상해서 다른튜너 3개정도 대보니까 다 맞게나오는데 낮은거는 높다 높은거는 낮다 이렇게 안맞고 442hz 맞추고 인토네이션 키 바꿔도 안맞고 Bb 악기 튜닝 한다고 just Bb 바꿔놓고하는데 근음부터 안맞게나오니까… 뭐하러 깔았는지 평균율은 맞게 나오는데 순정율 튜너 찾다가 깔았는데 바로 지웠습니다 ### 1/5 — Set pitch with mic broken *2023-10-20, version 2.1.1* You dan’t turn this off and will set any pitch it hears from 400-500 Hz as A making this tuner useless as it keeps changing and you can’t set at 440Hz because the tuner will automatically adjust ### 1/5 — The violin is messed up *2023-10-09, version 2.1.1* It won’t figure out which note I am playing, whenever I am trying to tune D it will go to D# or C or C# and it’s so annoying! ### 1/5 — dont use for guitar *2021-11-09, version 2.1.1* the first time i tried to tune my g string, it snapped, so i put another on, and it snapped. i had to wait to get a new string, and once i tried guitar tuna, i realized all the other strings were out of tune ### 1/5 — It’s fake *2021-06-28, version 2.1.1* Doesn’t work ### 2/5 — Incorrect *2024-02-10, version 2.1.1* I have perfect pitch. It is always a half note down from the real note. ### 2/5 — No good for brass *2023-09-02, version 2.1.1* No good for Eb brass ### 2/5 — Just Intonation is inaccurate *2023-06-19, version 2.1.1* The Just Intonation is inaccurate. I followed a harmonic series chart for C major in A:440hz As in, all notes should be calibrated to that, yet the frequencies recorded from the guitar, when cross referenced with the harmonic series chart, did not align. I wonder why ☹️🤔 ### 2/5 — Rating screen is annoying *2019-05-01* I really like this app and think it’s excellent however I did not want to put a rating in at this time but the rating screen kept coming up like an annoying mosquito you swat away with your hand. Each time I had to put down my cello bow and tap”NOT NOW”even though I hit not now several times it became so annoying that I decided to give it 2 stars and write this review based on the fact that you have to rate the app to use it for more than 30 seconds. I would expect that from a free app but I actually paid for this one. **Developer response:** Thank you for your feedback. Your concern has been addressed in version 1.1. Your feedback is always welcome. We’re sorry about the behavior you observed. We agree it was annoying and it was certainly not intentional. TimperTuner is programmed to use iOS’s automatic system ratings API as recommended by Apple and the API should only display the rating screen very infrequently and never more than three times a year. But it clearly something was wrong and we updated TimperTuner to only call this API very infrequently. ## Most praised reviews (10 highest-rated) ### 5/5 — Flawless *2026-07-27, version 2.1.1* I used this tuner to set the intonation on my esp electric guitar. Works perfect. My chords are cleaner and crisper than ever. Good job! ### 5/5 — Accessible with Voiceover *2026-05-25, version 2.1.1* Plain language well labeled controls. Great as pitch pipe for Barbershop,or tuning a piano. Would like a slider on main screen to adjust note duration. Love this as a signal genrrater and free app. Very useful. ### 5/5 — Another vote for more tuning systems *2026-05-09, version 2.1.1* This app has a _very_ nice interface. The only defect, for me, is that it would be good to have other tunings included — 1/4-comma meantone is a quite common one for early instruments. ### 5/5 — 짱이에요 *2026-05-03, version 2.1.1* 앱 튜너중에 최고 ### 5/5 — 素晴らしい *2026-04-13* チューナーアプリの中でいちばん良い。 ### 5/5 — とても素晴らしい！ *2026-03-26* いろんな楽器使えて、移調も対応オクターブも対応神すぎる！ ### 5/5 — Key Tuner *2026-03-15, version 2.1.1* Love this tuner. As a guitarist, I use many different tunings or just down tuning to achieve the sound I’m looking for. Key Tuner gives me exactly that. Love it ### 5/5 — Guitar tuning *2026-03-12* this app’s accuracy exceeded most of the guitar tuner apps , while it doesn’t take up a lot of storage like they do. Love it. ### 5/5 — 很少给软件打分 *2026-01-29* 简洁又用无可挑剔还完全免费，五星好评 ### 5/5 — Perfect Fine Tuning *2026-01-12, version 2.1.1* Smooth fine tuning. No “nervous” needle. Have been using this App now pretty much exclusively on guitars and even pedal steel guitars with complex setups. Thanks for this great and reliable App! … JD. --- *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.*