Comparison

TB Spectrogram vs Pure Tuner

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

Head to head
About

TB Spectrogram

This app provides real-time audio analysis with a spectrogram, spectrum analyzer, and goniometer. It can be used as a standalone application or as an AUv3 plugin within compatible music production hosts. Visualize your audio in detail with adjustable settings and multiple display options.

Highlights
  • Real-time spectrogram and spectrum analysis
  • Goniometer for stereo signal analysis
  • AUv3 plugin compatibility
  • Adjustable frequency and time resolution
  • Customizable color themes
  • On-screen piano keyboard mapping
Features
Read full description

ToneBoosters Spectrogram shows a real-time spectrogram, spectrum, and goniometer AUv3 plugin! We have taken the stunning visual spectrum analyzer features from our latest and greatest Equalizer Pro plugin and released it as a separate app / AUv3 plugin! The ToneBoosters Spectrogram app captures the microphone input and processes the signals in real time. To use it as a plug-in, use an AUv3-compatible host app such as Steinberg Cubasis, Apple Garageband, Audio Evolution Mobile Studio, Auria, AUM, or others. ToneBoosters Spectrogram will appear in the list of Audio Unit extensions for effect plug-ins. Key features: - Fully resizable (as AUv3 plugin) - Color themes for the user interface - Max screen support in Garageband - Adjustable color themes for UI and for spectrogram independently - Adjustable dynamic range - Adjustable frequency resolution - Adjustable time resolution - Adjustable spectral slope - Spectrogram AGC and dimming support - Show spectrogram and spectrum analyzer as overlay or individually - Spectrum analyzer also supports peak hold - Split-band goniometer for stereo signal analysis (correlation, left/right balance in one or two bands!) - On-screen piano keyboard to map spectrum analyzer to piano notes - Optimised for iPad and compatible with iPhone and iPod Touch What you should know: - Licenses acquired for this platform are not compatible with other platforms. - Audio Unit (AUv3) extensions require an iPad mini 2, iPad 4 or later models.

About

Pure Tuner

Features
Read full description

Almost every tuner measures against equal temperament. If you tune a harpsichord to Werckmeister, play meantone in a consort, sing pure thirds in a choir or own a 19-tone guitar, that is of little use. Pure Tuner measures against the tuning you actually play in. Free: • A display in the style of an analogue meter: long, thin needle, one tick per cent, a green zone of ±3 cents • Switchable fine scale of ±15 cents for precise tuning close to the target note • Reference pitch anywhere from 380 to 480 Hz. 392, 415, 430, 440, 442 and 466 Hz can be selected directly • Detects low notes in the correct octave, from a five-string bass to a piccolo • With plucked notes, the reading stays for a moment after the note has died away One-time purchase "Every Tuning": • Werckmeister III, Kirnberger II and III, Vallotti, Young II, Kellner, Bach/Lehman • Quarter-, sixth- and third-comma meantone, Pythagorean, just intonation in any key • Equal divisions of 17, 19, 22, 24, 31 and 53 tones, 22 shruti, Bohlen–Pierce • A workshop for your own tunings: enter cents or frequency ratios, starting from any existing tuning • Import and export of Scala files (.scl) • A drone on the key note, with a pure fifth if you like, for tuning by ear When you change the tuning, the key note stays where it is. Only the other notes move. Pitch detection runs on your device, nothing is recorded or transmitted. No account, no ads, no subscription.

Screenshots

TB Spectrogram2 screens
Pure Tuner4 screens

Verdict

The call

The clearest difference is in-app purchases: TB Spectrogram at none against Pure Tuner's 1. TB Spectrogram also leads on iOS requirement (13.0 vs 18.0). On price, update cadence, 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

Both are free to download. Pure Tuner sells 1 one-off in-app purchase. TB Spectrogram asks for nothing beyond the download.

UpkeepUpdate frequency

TB Spectrogram ships an update every 3 weeks, Pure Tuner fortnightly. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 8 level
TB Spectrogram versus Pure Tuner: the parameters behind the verdict, then further details
ParameterTB SpectrogramPure Tuner
PriceFreeFree
Rating4.4 (50 ratings) — better—
Positive reviews71.0% of reviews—
Number of ratings50 — better—
Update frequencyEvery 3 weeksFortnightly — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better18.0
Further details — not scored
Size15 MB2 MB
Age rating4+4+
DeveloperToneBoostersChristian-Conrad Knorr

In-app purchases

None

TB Spectrogram

No in-app purchases

1 purchases

Pure Tuner

One-time1
  • Every Tuning$3.99

Questions

Is TB Spectrogram free?
TB Spectrogram is free to download, with no in-app purchases.
Is Pure Tuner free?
Pure Tuner is free to download, with in-app purchases available.
Do TB Spectrogram or Pure Tuner have ads?
Neither TB Spectrogram nor Pure Tuner shows ads.
Which is updated more often, TB Spectrogram or Pure Tuner?
TB Spectrogram ships an update every 3 weeks, and Pure Tuner fortnightly. Most recently, TB Spectrogram was updated on October 22, 2026 and Pure Tuner on October 24, 2026.

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