# TB Spectrogram — user reviews > 31 indexed App Store user reviews of TB Spectrogram by ToneBoosters, rated 4.40/5 from 50 ratings. - Source: https://appshunter.io/ios/app/tb-spectrogram/id1530170842/reviews - App overview in markdown: https://appshunter.io/ios/app/tb-spectrogram/id1530170842.md - Rating breakdown: 5★ 39 · 4★ 4 · 3★ 1 · 2★ 2 · 1★ 4 ## Newest reviews (10 of 31) ### 4/5 — Very good and improving! *2025-12-29* The core functionality was always great - for me, it was the UI that needed some finesse. The last two updates have gone a long way towards making this the GOAT. I have but do not use 3 or 4 other spectrogram apps. Honestly, given the insistence on ultra small and narrow font (understandable given the real estate issues, but sometimes it feels excessive… nobody can read 2 pt. Arial Narrow) even making the menu close ‘X’ bigger would help. ### 4/5 — Works well but not made for iPhone *2024-05-24* Great quality spectrogram. UI is not usable on iPhone (the buttons are too small) but you get a spectrogram already on opening the app. ### 5/5 — A good spectrogram *2022-10-08* I have not yet found the perfect spectrogram app. This is one of the better ones. It is simple. The spectrogram is very clear and presented well. It shows sound and the results are intuitive to a novice. It seems to lack advanced features such as adjusting the FFT parameters. In particular, switching between linear and log would be a first feature to add. Allowing a a recording of the spectrogram would be good. Producing a spectrogram from an audio file in Voice Notes or from a file would be good. But if you’re not an engineer knowing what these features mean and you just was to see what sound looks like then this is a good choice. ### 5/5 — 嗯嗯 *2022-07-19* 加油 ### 5/5 — Шикарно! *2022-05-29* Бесплатная программа, в которой функций больше, чем у многих платных! ### 5/5 — Top notch Toneboosters Plugin! *2020-11-11* Another great tool from a solid & reliable company!!!! I love that we are finally seeing analyzers for iPad if I could make one small suggestion a spectrogram is a powerful tool but a waveform display would be a great option as a in app purchase. This would make it easier to mix on an iPad if we could see if the waveform of a master is is too squashed or too dynamic especially after long sessions when your ears become fatigued. 5 Stars. **Developer response:** Thanks for your review! ### 5/5 — めっちゃ便利 *2020-11-08* ほんとめっちゃ便利です。 **Developer response:** Thanks for your review! ### 5/5 — Fibonacci *2020-11-02* My review title sounds like pasta with some doggy cheese on top but I am actually referring to frequencies in a mix which sometimes shouldn’t be there. This app is of great assistance during eq actions in weeding out those head space gobbling gremlins ..fab app 👏👏👏🙏 🎩🦄📡 **Developer response:** Thanks for your review! ### 5/5 — It’s the best one! *2020-10-02* All of your products are simply outstanding! Thank you for the fresh update! **Developer response:** Thanks for your feedback! :-) ### 5/5 — I was looking for spectrogram and this is excellent and free *2020-09-30* Thanks a lot! This is nice and for free. Great! **Developer response:** Thanks for your feedback! :-) ## Most critical reviews (10 lowest-rated) ### 1/5 — Please give me an option use to audio files. *2024-10-04* I don’t know where the option to use them even is. ### 1/5 — you all should see COLOR SPECTRUM in ultrasonic *2024-05-24, version 1.5.4* waaaay better! (haven’t you dev’s heard of color? like red for too loud?) ### 1/5 — Cant see a thing *2024-02-13* This is probably a good app but the font size is microscopic so I can’t read a thing even with my glasses. Needs a way to zoom on or something because if I can’t read it it’s kinda useless to me. Even tried on my iPad and still can’t see ### 1/5 — terrible spectrogram. *2022-01-30* when I tried this, I was deeply disappointed. for one, the quality of the spectrogram displayed was terrible. it was incredibly pixelated, and there was no setting to fix that. furthermore, it couldn't display higher frequencies. it provided absolutely no help doing anything. I strongly recommend a different spectrogram. in my opinion, spectrumview is the best. another problem with this was the unstandard color of the spectrogram. no other spectrogram uses black to brown. that's just dumb, as even the loudest sounds will appear brown, which is a fairly dark color. this app is a steaming pile of trash, the developers obviously don't know how to make a proffesional spectrogram, and have most likely never used one. **Developer response:** Thanks for your feedback. There are over two dozen color schemes available for the spectrogram (and for the integrated spectrum analyser) for you to try if you want different color settings. Also increasing the gain will create brighter colours. ### 2/5 — realtime color spectrum in ULTRASONIC, not here! *2025-05-01, version 1.6.1* haven’t you dev’s heard of color? like red for too loud? blue for low level? green for mid level? yellow for high input? I couldn't delete this fast enough but i did notice all the pricey apps and plugins. I guess most reviewers here thought so too. And no trials?? (good luck selling anything) ### 2/5 — Needs to pause when the host pauses *2022-12-07* The overlay of named keys would be incredibly valuable if it wasn’t so fleeting. The failure to respect the paused state is incredibly frustrating and limiting ### 2/5 — 很不错的软件 *2022-12-01* 很不错的软件，但iPhone竖屏字太小，横屏刘海屏会遮挡关键信息，建议后续版本可以优化 ### 3/5 — Not horizontal, not linear *2026-07-26* The screenshot in the App Store showed horizontal scrolling, but it is doing vertical scrolling, and I can’t find a way to change that. Also, the frequency scale is logarithmic, and I can’t find a way to make it linear. ### 3/5 — Latest update inverted frequency *2024-08-26* Lows are high and highs are low :( **Developer response:** This was fixed quite a while ago - simply update the app to have it resolved :-) ### 4/5 — Help *2026-08-23* So do you know why the app might not work with some files, is there a size limit or what. ## Most praised reviews (10 highest-rated) ### 5/5 — Incredible app *2026-07-22* Holy cow, this app is great! Simple and powerful. I love interface of being able to touch the screen and see what notes are what. Love this app, great job to whoever made this. ### 5/5 — Mud *2025-01-11* Absolutely brilliant at revealing nasty low and high-frequency content and therefore facilitating targeted shelving . 🙏🙏🏿👍😄 **Developer response:** Thanks for your review! ### 5/5 — Very Helpful In Amateur Radio Work *2024-08-26* I use this Very Useful FREE Software to View Amateur Radio Signals. Thank You & 73 ve3myz james ### 5/5 — Perfect!!! *2024-08-11* My every day app)) Thank you! ### 5/5 — Useful for piano *2024-04-10* The piano roll is of much use for at a glance song learning Unobtrusive and free! A great visual aid ### 5/5 — Simple - Just what’s needed *2023-11-25* Would be good to zoom on a narrower band. Would be nice to set custom markers on specified frequencies. ### 5/5 — helpful for recreating songs *2023-09-28* really helpful app when it comes to trying to recreate songs with MIDI or to use it as a reference. ### 5/5 — Great for Musicians *2023-04-07* Love the piano keyboard on the right to link highlighted frequencies to specific notes, and worked brilliantly for me for visualising some music theory. I play bass guitar and would love to be able to zoom in vertically. I appreciate that I might not get any better resolution (as the frequency bins at the bass end are probably quite wide) but it would help fill the screen and make it easier to match to notes. ### 5/5 — Amazing tool, simple to use *2023-02-16* I'm using it for measuring ambient room noise for science experiments and it works great! ### 5/5 — Just Great! *2023-01-08* A great tool to analyze and visualize your own voice --- *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 2026-08-25.*