Delay Calc vs Decibel Display
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Delay Calc
This app helps musicians and recording engineers calculate delay and modulation times based on BPM. Input your BPM and select rhythmic values to instantly get precise timings in milliseconds or hertz for your audio effects.
- BPM to millisecond conversion
- BPM to hertz conversion
- Rhythmic value selection
- Delay time calculation
- Modulation time calculation
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Delay Calc is musical calculator for musicians and recording engineers who need to find delay and modulation times for a Beats Per Minute Value(BPM). Users simply type in a BPM value and then can select various musical rhythmic values to get the rhythmic values in milliseconds for delay or hertz for modulation effects.
Decibel Display
This companion app displays audio metering data from its desktop counterpart on your smartphone or tablet. Design custom multi-meter presets with various meter types, colors, and shapes for real-time audio analysis.
- Real-time audio metering
- Customizable meter presets
- VU Meter, LUFS, RMS
- Spectrum Analyzer
- Phase-scope
- Modular design
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Decibel Display app is only a viewer, it works with Decibel Desktop which is an audio Plug-in (VST3, AAX, AU) and standalone app (Mac, Windows) that can be broadcast to any smartphone or tablet device using this app. It is a modular multi-meter on which you can design the preset you want including color, size, shape, choosing between several VU Meter, LUFS Meters, RMS Meter, Spectrum Analyser, Phase-scope and so on.
Screenshots
Verdict
The clearest difference is review sentiment: Delay Calc at 80% against Decibel Display's 40%. Delay Calc also leads on rating (4.5 vs 4.3) and iOS requirement (10.0 vs 13.0). Decibel Display's advantage is update cadence (every 5 weeks vs every 36 months). 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.
Delay Calc holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 6 and 11 respectively. Written reviews point the same way: 80% of Delay Calc's written reviews are positive against 40% of Decibel Display's.
Delay Calc ships an update every 36 months, Decibel Display every 5 weeks. The most recent releases landed on October 20, 2026 and October 24, 2026 respectively.
| Parameter | Delay Calc | Decibel Display |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (6 ratings) — better | 4.3 (11 ratings) |
| Positive reviews | 80.0% of reviews — better | 40.0% of reviews |
| Number of ratings | 6 | 11 — better |
| Update frequency | Every 36 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 1 MB | 12 MB |
| Age rating | 17+ | 4+ |
| Developer | Kevlee Software LLC | Process Audio |
Customer experience
Delay Calc
Decibel Display
In-app purchases
Delay Calc
No in-app purchases
Decibel Display
No in-app purchases
Questions
Is Delay Calc free?
Is Decibel Display free?
Which has better reviews, Delay Calc or Decibel Display?
Do Delay Calc or Decibel Display have ads?
Which is updated more often, Delay Calc or Decibel Display?
Other comparisons
