Analog Rack Delay vs TB Spectrogram
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Analog Rack Delay
This audio plugin offers the powerful delay algorithms of Nembrini Audio in a user-friendly package. It features BPM sync, a stereo spread circuit, and a rich analog tube preamp for unique signal coloration. Use it as a standalone app or within other music production software.
- Analog delay algorithms
- BPM Sync
- Stereo spread circuit
- Tube preamp coloration
- Standalone app
- AudioUnit v3 effect
- Inter-App Audio effect
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The Analog Rack Delay plugin is the power of Nembrini Audio’s delay algorithms in a simple package! BPM Sync, stereo spread circuit and a very juicy sound! Nembrini Audio has taken the guitarists most preferred analog and digital effect pedals and has repacked it in new rack style plugins easy to use and extremely powerful at the same time, with the addition of a custom design tube preamp virtual circuit which gives color to the signal in a very special way. Just insert the Analog Rack Delay plugin in your tracks to hear its beautiful analog tube coloration! Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect
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.
- 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
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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.
Screenshots
Verdict
The clearest difference is update cadence: TB Spectrogram at every 3 weeks against Analog Rack Delay's every 5 months. TB Spectrogram also leads on iOS requirement (13.0 vs 15). Analog Rack Delay's advantage is review sentiment (100% vs 71%) and rating (4.8 vs 4.4). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Analog Rack Delay holds the better App Store score, 4.8 against 4.4. Both are backed by a comparable volume of ratings — 32 and 50 respectively. Written reviews point the same way: 100% of Analog Rack Delay's written reviews are positive against 71% of TB Spectrogram's.
Analog Rack Delay ships an update every 5 months, TB Spectrogram every 3 weeks. The most recent releases landed on September 28, 2026 and September 27, 2026 respectively.
| Parameter | Analog Rack Delay | TB Spectrogram |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (32 ratings) — better | 4.4 (50 ratings) |
| Positive reviews | 100.0% of reviews — better | 71.0% of reviews |
| Number of ratings | 32 | 50 — better |
| Update frequency | Every 5 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15 | 13.0 — better |
| Further details — not scored | ||
| Size | 25 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Nembrini Audio | ToneBoosters |
Customer experience
Analog Rack Delay
TB Spectrogram
In-app purchases
Analog Rack Delay
No in-app purchases
TB Spectrogram
No in-app purchases
Questions
Is Analog Rack Delay free?
Is TB Spectrogram free?
Which has better reviews, Analog Rack Delay or TB Spectrogram?
Do Analog Rack Delay or TB Spectrogram have ads?
Which is updated more often, Analog Rack Delay or TB Spectrogram?
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