Noise Spectrum Logger vs Know Your Crypto
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Noise Spectrum Logger
Visualize sound frequencies in real-time with a dynamic spectrum display. Log and export audio data for analysis, with options for smoothing and background processing. Access all features offline.
- Real-time spectrum display (20-20000Hz)
- Zoomable spectrum view
- Maximum value highlighting
- Spectrum smoothing options (Mean/RMS)
- Logging and CSV export
- Background processing
- Offline functionality
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1. DESPLAY The power spectrum of sound is displayed in the range of 20 - 20000Hz. You can zoom in/out the spectrum by pinching in/out smoothly. Also landscape orientation is supported. 2. USEFUL While "hold" switch is ON, the maximum values are displayed in red color. You can select "Mean" or "RMS" as the way of smoothing the spectrum out. 3. LOGGING By sliding "log" switch, the logging mode is started. To choose a past log from "History" tab, you can pull it from iPhone via email as a CSV file. The CSV file can be edited with Excel etc. 4. AVAILABLE Without cellular data service, the full functions are available. 5. BACKGROUND PROCESSING You can use the logging function even when iPhone in your pocket. 6. TECHNICAL NOTE Sample rate: 44.1kHz Bit depth: 32bit float FFT window function: Blackman FFT samples: 8192
Know Your Crypto
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Inside the Know Your Crypto app, you can: Access all of your videos in one easy to use app Receive push notifications with the latest news and updates Access to all of your videos without having to remember your password Save your favorite posts so you can quickly find them later Keep your summary statement high level and only call out the features listed in
Screenshots
Verdict
The clearest difference is in-app purchases: Know Your Crypto at none against Noise Spectrum Logger's 1. Know Your Crypto also leads on update cadence (every 6 weeks vs every 10 months). On price, ads, device support and iOS requirement 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. Noise Spectrum Logger sells 1 one-off in-app purchase. Know Your Crypto asks for nothing beyond the download.
Noise Spectrum Logger ships an update every 10 months, Know Your Crypto every 6 weeks. The most recent releases landed on November 2, 2026 and November 8, 2026 respectively.
| Parameter | Noise Spectrum Logger | Know Your Crypto |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 10 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 15.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 15 MB |
| Age rating | 12+ | 4+ |
| Developer | Yukiko Iwai | Emily Sudduth |
In-app purchases
Noise Spectrum Logger
- Remove Ads$3.99
Know Your Crypto
No in-app purchases
Questions
Is Noise Spectrum Logger free?
Is Know Your Crypto free?
Do Noise Spectrum Logger or Know Your Crypto have ads?
Which is updated more often, Noise Spectrum Logger or Know Your Crypto?
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