Comparison

iAnalyzer vs FFT Plot

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iAnalyzer

This professional audio analysis software uses FFT to examine sound signals on iOS devices. It offers real-time spectrum analysis, precise peak frequency computation, and a unique instrument tuner function. Ideal for musicians and sound engineers seeking detailed audio insights.

Highlights
  • Real-time FFT spectrum analysis
  • Octave and 1/3 Octave display
  • High precision peak frequency computation
  • Instrument tuner function
  • Adjustable playback speed
  • VGA output support
  • Waveform display
Features
Read full description

iAnalyzer is a FFT based professional software to analyze the audio signals for iPhone, iPod Touch and iPad. After 10 years of good sales all over the world, we are glad to see that iAnalyzer has gradually become the industry standard in audio analyze field, due to it's very high quality of course. This is definitely a Must Have app for every musician or sound engineer. We also released the Mac version, you can download it from "Mac App Store". Features: -High performance software design for Real Time Analyzing(RTA) and complex graph displaying. -Works on 44K sample rate, 20~20k Hz frequency output. -FFT spectrum, Octave and 1/3 Octave result display. -Colored curve depend on the dB value. -Flex FFT size, 4K, 8K, or 16K. -Reference Pressure configurable. -2D or 3D or Mix 2D&3D display. -History result display while in 3D mode. -High precision peak frequency computation, average-error lower than 0.1%. -Auto peak frequency tracing, up to 3 peaks can be displayed simultaneously and each one be linked from text to the graph clearly. -Frequency to music scale converter, you can use iAnalyzer as a professional instrument tuner, or to test if any sound is tuneful. -Powerful synthesizer to allow you replay the audio with different speed, from 1/8 to 4x. With this feature, you can listen to your recoding very slowly. (Require iPhone 4S and later, iPad 2 and later which shipped with multiple cores processor.) -VGA output support. Sync display on your device and extern screen. (iPhone 4, iPod touch 4 and iPad required) -Current waveform display and summary waveform display. -Record at any position and red color to mark the latest recording, unlimited recording time. -Play back the recording. -Oscope Auto-Scale: Enable you to view more details for low level signal. -Snap to Peak: Find peak more easily while using measure line. -File Manager: Recording in wave format, create new files, delete exist files, etc. -Wifi Transfer and Data exporting: Download wav files with your browser, including screen shot, FFT result in txt file. -Touch in the result area to use the measure line, bordered label means where is a peak. -Move in the waveform area or touch on the bottom of the area to change the current position, iAnalyzer re-compute and update graph automatically. You can also change the position while playing. Note: -The internal mic of iPhone first generation can only works on 8K sample rate, you need head-set to achieve 44k. -Press "File" button to see the HTTP address, it is in the bottom of the window. -For more information, Please visit http://phyar.cn . How to Use: -Touch and move in the result area with one finger to use the measure line. -Touch and move in the result area with 3 fingers to rotate the 3D graph. -Touch and move in the summary waveform area to move the current position. -Tap in the scroll bar area(bottom of screen) to re-seek the current position. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: http://phyar.cn/pp/

About

FFT Plot

This real-time audio analysis app provides precision sound measurement and visualization. It's ideal for detecting sound issues, room tuning, and speaker calibration, offering detailed frequency analysis for musicians and audio professionals.

Highlights
  • Real-time audio analysis
  • Frequency detection
  • Averaging options
  • Window functions
  • Linear and logarithmic scales
  • Weighting options
  • Draggable cursors
Read full description

***** "I use this app to detect sound feedback problems on live show and it became helpful and practic." FFT Plot is a powerful real-time audio analysis app. Designed with musicians and recording engineers in mind, it can also be used by anyone interested in the world of sound. Ideal for room tuning or speaker tuning, the app enables portable, precision audio measurement and visualization. Feature Highlights: ● FFT Size (2048 to 16384 points) ● Fast, Slow and Infinite Averaging ● Window function (Hamming, Hann, Rect) ● Peak Frequency detection ● Linear and Logarithmic scale ● Toggle between Flat, A and C weighting ● Pan to adjust visible dB range ● Draggable cursors ● iPhone X ready Audio credits: "Evening Birdsong" and "Cuckoo" by Benboncan

Screenshots

iAnalyzer4 screens
FFT Plot1 screens

Verdict

The call

The clearest difference is price: iAnalyzer at Free against FFT Plot's $9.99. iAnalyzer also leads on update cadence (every 5 months vs every 17 months). FFT Plot's advantage is review sentiment (84% vs 41%) and rating (4.8 vs 4.2). On ratings volume, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

iAnalyzer is free to download; FFT Plot costs $9.99 up front. iAnalyzer sells 2 in-app purchases, starting at $4.99 per month. FFT Plot asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

FFT Plot holds the better App Store score, 4.8 against 4.2. Both are backed by a comparable volume of ratings — 75 and 90 respectively. Written reviews point the same way: 41% of iAnalyzer's written reviews are positive against 84% of FFT Plot's.

UpkeepUpdate frequency

iAnalyzer ships an update every 5 months, FFT Plot every 17 months. The most recent releases landed on September 24, 2026 and September 23, 2026 respectively.

Scorecard7 real differences · 3 level
iAnalyzer versus FFT Plot: the parameters behind the verdict, then further details
ParameteriAnalyzerFFT Plot
PriceFree — better$9.99
Rating4.2 (75 ratings)4.8 (90 ratings) — better
Positive reviews40.5% of reviews84.4% of reviews — better
Number of ratings7590 — better
Update frequencyEvery 5 months — betterEvery 17 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.011.0 — better
Further details — not scored
Size3 MB7 MB
Age rating4+4+
Developer平 陈ONYX Apps

Customer experience

iAnalyzer

All ratings75 ratings
Positive77.3%
Neutral6.7%
Negative16.0%
Written reviews37 reviews
Positive40.5%
Neutral16.2%
Negative43.2%

FFT Plot

All ratings90 ratings
Positive93.3%
Neutral2.2%
Negative4.4%
Written reviews109 reviews
Positive84.4%
Neutral6.4%
Negative9.2%

In-app purchases

2 purchases

iAnalyzer

Subscriptions2
  • iAnalyzer Pro (1 Month)3 Days trial$4.991 Month
  • iAnalyzer Pro (1 Year)3 Days trial$29.991 Year
None

FFT Plot

No in-app purchases

Questions

Is iAnalyzer free?
iAnalyzer is free to download, with in-app purchases available.
Is FFT Plot free?
FFT Plot costs $9.99, with no in-app purchases.
Which has better reviews, iAnalyzer or FFT Plot?
FFT Plot is rated higher. iAnalyzer averages 4.2 out of 5 from 75 ratings, while FFT Plot averages 4.8 from 90 ratings.
Do iAnalyzer or FFT Plot have ads?
Neither iAnalyzer nor FFT Plot shows ads.
Which is updated more often, iAnalyzer or FFT Plot?
iAnalyzer ships an update every 5 months, and FFT Plot every 17 months. Most recently, iAnalyzer was updated on September 24, 2026 and FFT Plot on September 23, 2026.

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