FFT User Reviews

Customer Experience

Positive experience86.1% of reviews
Neutral2.8% of reviews
Negative experience11.1% of reviews

~ Based on 36 written reviews from the US App Store.

Is FFT Safe?

Not enough ratings yet to assess FFT.

Is FFT Legit?

FFT appears to be a legitimate app. AppsHunter Legitimacy Score for FFT is 80/100.

Based on 80 of 100 points across 7 verification signals from App Store and developer data.

Top reviews

andrewr

Great app but it’s crashing with my update to iOS 17.4.1

Amazing app!

I’ve been using this app for a looooong time. This is an amazing app that is definitely starting to show its age but remains extremely useful.

I put that s%#t on everything

Aka: I use this app for all sorts of troubleshooting. Trying to find a slow leak in a tire or a vacuum leak on an engine. By showing the peaks in Hz you can visually "see" the sound in a way impossible to hear with your ears. Priceless tool for debugging anything that makes noise.

Not exactly a real discrete FFT

The spectrum is displayed as a continuous graph rather than being discrete vertical lines for each frequency present. Makes it very hard to use for real quantitative analysis. Why could they not have done it the correct way??

求めていたとおり

細かく周波数を測定でき、日本語対応もしているのでバッチリです。
アプリ推奨のマイクで正しく測定でき、欲しいものがみつかり、嬉しいです。
あと、できればジェネレーターで正弦波を出力するとき、プリセットで8個程度登録できれば最高です。(多ければ多いほどいいです)

Sehr schön

Gut gemacht.

最新升级的版本问题

您好!最新的版本应用在ipad air2 中不能使用

3 Holzbergersterne 128GB iPad 64GB iPhone 4s iOS 8.0.3 deutsch/english

Seit Jahren Updates, aber nicht wo es wirklich nötig ist. Bitte auch die deutsche Sprache hinzufügen. Danke / For years, updates, but not where it is really needed. Please add the German language. Thank You

Musical pitches are not correct

This appears as if it could be a good app.

Severe let down, is that it incorrectly labels the musical notes. Using the apps own signal generator to create a 440hz sine wave, which is generally used for middle A, the app labels it as a G# . It seems to be a semi tone out for all of its pitches.

I hope this is can be remedied ASAP with an update.

Will change my review when it does.
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Great app

Help me set up my hi Fi stereo with just my iPad. Lots of options and easy to use!

Good App Gone Bad

Update
Crashes every time. Deleted and re-installed. Same thing. Developer must not care about reviews.

I hate to say anything bad about this app, because I use it all the time, but the new patch I just installed is buggy. It's crashed 3 times in about a minute. Every time you double tap the screen it crashes. I made a change in the options and it crashed. I ran my memory management app and it did the same thing.
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Great app

Excellent, however there is a current bug that brings up the signal generator when switching between apps on ipad.

Awesome

Loved this app for a long time! Thanks for the 4" support!

Add Colours Choice?

First off, you get 5 stars simply because I like gadgets and this looks to be a good one. :)

However, I haven't used the app in anger so the rating is somewhat spurious.

The real purpose of this review is to add a request. I'm colour blind. I have the commonest kind too, namely red-receptor deficiency. A couple of my friends are exactly the same. Essentially brown = red, pink = grey, and worst of all here, green = yellow. (Other people's XL plots, for example, are almost impossible to discern when they combine the graphic representation of a few functions in one single diagram — those shades can be so hard to track and pin down from the legend, especially when they're pastel. Only the nice, simple, bright, kiddy kind of colours work fine for us Darwin's losers.)

So, is there any chance you might add a facility to change the standard colours of the function lines displayed? Pretty please? As I mentioned, the green and yellow lines are the worst — I have to resort to the use of logic to tell them apart. It's tricky but I'm afraid I might actually make a mistake one day. Oh wait, I just did — fixing an electrical socket. That's why I'm typing this from a hospital bed. :)

P.S. Blue is nice. I like blue.
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Great app!

Great app which is easy to use and I use quite frequently but I would like to be able to output and email fft data in a text column format or excel... Can you please include this enhancement? Thanks!

Brilliant

Far, far better than an RTA, and with a signal generator to boot. Super easy to use. I absolutely love this app!

Good

Good - does what it is advertised to.

Expensive but excellent

I've got literally hundreds of apps, too many to fit on my iPhone, this however is on of the few that remain in the first few pages of apps. It's definitely a gadget but as a geek I love it. It's accurate and easy to use, the sine-wave generator can replicate tones exactly as sampled fooling many people into thinking they're hearing the original. It works notably better on the new 3GS as the sampling rate is higher, it will happily sample and generate tones from a few 10s of Hz to 20KHz in real-time.

FFTs are a very "simple" way to divide up sound samples and produce histograms of the frequencies, it's amazing how well this can be done in such a small device. The algorithm is relatively simple and there are many open source implementations but this one is nicely packaged and perfectly designed for the iPhone.

I've bought many apps in the past that have been erased after a few days, I've had this now since the 3GS came out and I still use it regularly both as a toy and, well, er, well, as a toy. :-)

-John-
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Brilliant

This app has replaced a Laptop, interface and mic for me. The accuracy of the metering, the ability to generate test tones, save the results and compare differences is just brilliant. I could not recommend this app more highly.

Nice app. Would like to see...

Works as advertised. Nice online tutorial is available. Would really like to see two features added to make it less of a toy and more of a useful tool. 1) The ability to store the actual data and upload it to a PC. That is, not just a screen shot. 2) An A-weighted scale option.