Implen NanoPhotometer vs Audio Spectrum Viewer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Implen NanoPhotometer
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The Implen NanoPhotometer App turns your iPhone, iPod Touch or iPad device into a control screen and data saving device for the Implen NanoPhotometer line of spectrophotometer products including the C40, N50, N60 and NP80. Supports following models: 1. NanoPhotometer C40 2. NanoPhotometer N50 3. NanoPhotometer N60 4. NanoPhotometer NP80 https://www.youtube.com/watch?v=oFrfJf7fRX8&feature=youtu.be&spfreload=10 Version: NPOS 4.6 build 16350 (4.6.16350) http://www.implen.com
Audio Spectrum Viewer
Visualize the frequency content of your live audio environment with a dynamic waterfall spectrogram. Analyze sound systems, create audio fingerprints of environmental sounds, and save spectrograms with custom captions. Capture audio in the background for simultaneous recording and photography.
- Live audio frequency visualization
- Waterfall/spectrogram display
- Speaker and sound system analysis
- Environmental sound fingerprinting
- User-selectable gain and sample rate
- Save spectrograms with captions
- Save audio clips for playback
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Audio Spectrum Viewer is an easy to use app which will show the frequency content of your live audio environment in an easy to understand waterfall / spectrogram. This tool can be used to analyze the performance of speakers and sound systems, and to create audio fingerprint images of environmental sounds such as bird songs and other animal sounds. Audio Spectrum Viewer is a powerful tool with user-selectable gain, sample rate and other parameters to optimize for a particular setting. Spectrograms can be saved to the camera roll with a timestamped and customizable caption and the audio clips can be saved for later playback. Audio can be captured in the background so you can simultaneously take photos of birds while analyzing their sounds.
Screenshots
Verdict
The clearest difference is price: Implen NanoPhotometer at Free against Audio Spectrum Viewer's $0.99. Implen NanoPhotometer also leads on update cadence (every 3 months vs every 72 months) and iOS requirement (10.0 vs 16.6). On ads, in-app purchases 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
Implen NanoPhotometer is free to download; Audio Spectrum Viewer costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Implen NanoPhotometer ships an update every 3 months, Audio Spectrum Viewer every 72 months. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.
| Parameter | Implen NanoPhotometer | Audio Spectrum Viewer |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | — | 4.3 (4 ratings) — better |
| Positive reviews | — | 50.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 3 months — better | Every 72 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 54 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Implen Inc. | Steve Glenner |
In-app purchases
Implen NanoPhotometer
No in-app purchases
Audio Spectrum Viewer
No in-app purchases
Questions
Is Implen NanoPhotometer free?
Is Audio Spectrum Viewer free?
Do Implen NanoPhotometer or Audio Spectrum Viewer have ads?
Which is updated more often, Implen NanoPhotometer or Audio Spectrum Viewer?
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