Comparison

Audio Frequency Analyzer vs Enigma Semi

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

Head to head
About

Audio Frequency Analyzer

This real-time audio analyzer measures and evaluates sound environments with 1/3 octave band frequency response and FFT analysis. It supports calibration for high accuracy and is suitable for various audio testing and tuning applications.

Highlights
  • Real-time frequency spectrum response measurement (1/3 octave, 30 bands)
  • FFT Analyzer
  • Observation frequency range: 20 - 23000 Hz
  • Calibration function for high accuracy
  • Supports built-in and external microphones
  • Snapshot and averaging functions
Read full description

"Audio Frequency Analyzer" is a powerful real-time audio analyzer (RTA) app for iPhone. With its simple operation, you can easily measure and evaluate your sound environment. This app measures the frequency response in 30 split band scale of 1/3 octave in real time. It can also display the FFT analysis results. It supports calibration for 1/3-octave bands. By adjusting the characteristics to match not only the built-in microphone but also your external microphone, it achieves high measurement accuracy. "Audio Frequency Analyzer" can be used for various applications, including sound room tuning, speaker settings, audio equipment testing, stage setup measurement, sound mixing environment evaluation and noise environment investigation. Features: - Frequency spectrum response measurement of 1/3 octave unit, 30 bands. (OCT) - FFT Analyzer (FFT) - Observation frequency range: 20 - 23000 Hz - Logarithmic amplitude display. - Touch-scroll function to adjust visible amplitude ranges. - Display the measured value of 1/3 oct bands at OCT mode. (dB@OCT) - Function to change the graph slope at FFT mode. (Slope): -3dB/oct (less than 1kHz), +3dB/oct (1kHz or higher) - Peak hold function. (Hold) - Average display function. (Avg): Time linear averaging. Fast-2.56sec, Slow-12.8 sec - Display response control. (Fast/Slow) - Reset of Measurement display position. (Scroll) - Snapshot of Measurement display. (Snap) - Calibration function in OCT mode. (Calibrate): 1/3 octave band offset and total offset setting. - Supports built-in microphone, headset microphone, and external digital audio connection. Note: The first time you access your microphone and photos after installing the app, the iOS system will ask you for permission to access them. If you have not enabled this setting, the app will not be able to access them due to iOS system privacy restrictions. Please enable the access permission in the iOS setting "Settings > Privacy & Security > Photos or Microphone". Please visit our iOS app support page for more information about this app.

About

Enigma Semi

Features
Read full description

Enigma Semi-Full PRO mode exclusive operation application. This application is for Enigma Semi-Full only. It can not be used for the conventional another Enigma series. This application is only for PRO mode which can set the ignition time. Professional knowledge is required to set the ignition timing. EASY mode has special application which can make adjustment from ignition timing of normal ECU without advanced expert knowledge. This application can be downloaded for free. When it is free, you can connect with all Enigma Semi-Full, but only the tachometer screen is displayed. (Only tachometer and TPS are displayed). In order to set various functions of Enigma Semi-Full, you need to purchase the bike model corresponding to Enigma Semi-Full you have from the model selection screen. When purchasing and selecting bike model , the following functions can be used. - Preset a data combined. Preset data can be easily written to Enigma Semi-Full. - The ignition timing of 0 - 60 degrees can be adjusted for each engine rotation / throttle position. It is also possible to set the dwell time. - The fuel injection amount can be set for each engine rotation / throttle position. - Fuel correction at idling can be performed. - Startability and idling stabilization correction function when using a big injector. (Only for compatible models) - Adjustment of fuel injection time by engine temperature and intake air temperature is possible. - It is possible to set injection timing at each rotation speed. - Various maps can be displayed in 3D graph. - Two maps can be put inside Enigma Semi-Full, and it can be switched with an external switch. - In real time, you can display tachometer, throttle opening monitor, injector opening / closing rate, oil / water · engine temperature (depending on model),Voltage (Applicable models only),Air-fuel ratio(Applicable models only). - Display the current engine speed and throttle position in real time in the fuel & ignition adjust map. - Revolution Limit can be set . - Pit-in limit can be set (Applicable model only) - Digital acceleration pump can be set. - It is possible to correct the TPS sensor according to the actual machine. - You can make several fuel data and save it, you can change it immediately when you need it. - It corresponds to Japanese and English. No pairing is necessary. On the Bluetooth setting screen, Enigma is not searched. Please turn on Bluetooth on the Bluetooth setting screen, then exit the setting screen with the Home button, launch the application, and connect from "Connect to Semi-Full" of the application.

Screenshots

Audio Frequency Analyzer4 screens
Enigma Semi4 screens

Verdict

The call

The clearest difference is price: Enigma Semi at Free against Audio Frequency Analyzer's $9.99. Enigma Semi also leads on update cadence (every 2 months vs every 8 months) and device support (3 vs 1). Audio Frequency Analyzer's advantage is in-app purchases (none vs 12). On ads 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

Enigma Semi is free to download; Audio Frequency Analyzer costs $9.99 up front. Enigma Semi sells 12 one-off in-app purchases. Audio Frequency Analyzer asks for nothing beyond the download.

UpkeepUpdate frequency

Audio Frequency Analyzer ships an update every 8 months, Enigma Semi every 2 months. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.

Scorecard5 real differences · 5 level
Audio Frequency Analyzer versus Enigma Semi: the parameters behind the verdict, then further details
ParameterAudio Frequency AnalyzerEnigma Semi
Price$9.99Free — better
Rating3.7 (3 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS26.29.0 — better
Further details — not scored
Size0 MB5 MB
Age rating4+4+
DeveloperTOON,LLCDILTS JAPAN, LIMITED LIABILITY CO.

In-app purchases

None

Audio Frequency Analyzer

No in-app purchases

12 purchases

Enigma Semi

One-time12
  • CYGNUS-X SE44J$3.99
  • GROM JC61$3.99
  • GROM JC75$3.99
Show 9 more
  • MONKEY125 JB02$3.99
  • Z125 Pro$3.99
  • SUPER CUB C125 JA58$3.99
  • HUNTER CUB CT125 JA65$3.99
  • DAX125 JB04/JB06$3.99
  • CROSS CUB CC110 JA60$3.99
  • GROM 8BJ-JC92$3.99
  • GROM 2BJ-JC92$3.99
  • MONKEY125 JB03/JB05$3.99

Questions

Is Audio Frequency Analyzer free?
Audio Frequency Analyzer costs $9.99, with no in-app purchases.
Is Enigma Semi free?
Enigma Semi is free to download, with in-app purchases available.
Do Audio Frequency Analyzer or Enigma Semi have ads?
Neither Audio Frequency Analyzer nor Enigma Semi shows ads.
Which is updated more often, Audio Frequency Analyzer or Enigma Semi?
Audio Frequency Analyzer ships an update every 8 months, and Enigma Semi every 2 months. Most recently, Audio Frequency Analyzer was updated on October 24, 2026 and Enigma Semi on October 14, 2026.

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