Delay Calc

Delay Calc

By Kevlee Software

Delay Calc is a specialized BPM-to-time calculator for musicians on iOS, providing millisecond and hertz conversions for audio effects.

The App DNA

What makes this app unique?

The app removes the cognitive friction of manual tempo-to-delay math during studio sessions, though the lack of tap tempo forces a manual entry bottleneck.

For Musicians and recording engineers requiring precise timing calculations for audio effects.

What does it look like?

Key features

BPM-to-Millisecond Calculatorstandard

Converts BPM into rhythmic delay times in milliseconds.

BPM-to-Hertz Converterstandard

Calculates frequency values for modulation effects.

Rhythmic Value Selectorstandard

Applies musical note values to BPM calculations.

How much does it cost?

freeFree

Delay Calc operates as a free, ad-free utility with no current monetization.

Velocity

Dormant developmentopaqueShow more...

Development has ceased, with no updates or feature releases in over eight years. The app remains in a zombie state, as the last recorded version was shipped 2,926 days ago. There is no evidence of ongoing maintenance or operational activity.

See all version history

Who built it?

Kevlee Software

1 app tracked · Music

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User Sentiment

What do users think recently?

Fresh user feedback skews excited. Users appreciate the tempo input tool provides a reliable way to calculate delay times for musical equipment and simple and focused design allows musicians to quickly determine timing values without unnecessary complexity.

How are ratings & reviews evolving?

App Store
4.50 · 6

What users say, by theme

What Users Love
  • The tempo input tool provides a reliable way to calculate delay times for musical equipment
  • Simple and focused design allows musicians to quickly determine timing values without unnecessary complexity
What Frustrates Users
  • The inability to calculate delay values below sixteenth notes limits utility for complex rhythmic patterns
+ 1 more theme
What Users Want 1 request inside

4 of 4 recent reviews analyzed · limited sample

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Unlock 1 more frustration theme and 1 user request, each backed by review evidence.

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Competition

Competitive landscape for Delay Calc

How's the Music market?

Delay Calc maintains a niche position as a free, single-purpose utility with a 4.5-star rating. The lack of updates since 2018 suggests a maintenance-mode posture that limits its ability to compete with modern, feature-rich audio tools.

The rivals identified

The Analyst's Read

Key takeaways for Delay Calc

Where is it heading?

The market for audio utilities is consolidating around integrated DAW tools that offer broader functionality than single-purpose calculators. Delay Calc remains stable for its core audience, but the lack of active development prevents it from capturing users who require tap tempo or sub-sixteenth note resolution.

  • The eight-year update gap signals a maintenance-only posture, which leaves the tool vulnerable to feature-rich competitors that integrate directly into DAW workflows.
  • The removal of advertisements improves the user experience for a utility tool, potentially increasing long-term retention among existing users.

The SWOT

Core Strengths
  • Focused utility design removes cognitive overhead
  • Reliable calculation logic for triplet delays
Critical Frictions 2 weaknesses inside
Growth Levers
  • Tap tempo integration would reduce manual friction
Market Threats 1 threat identified

Next best moves

1 Invest

Ship tap tempo input because it is the top-requested feature → increase workflow speed

The counter-intuitive read

The app's long-term stagnation is its primary feature…

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Bottom line

Delay Calc provides a reliable, focused utility, but the lack of tap tempo forces a manual workflow that limits professional adoption. Integrating tap tempo would unlock faster timing calculations, directly addressing the primary efficiency complaint driving user frustration.

Unlock 2 critical frictions, 1 market threat and the analyst’s take.

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FAQ

Is Delay Calc suitable for professional recording sessions?
Delay Calc is effective for quick calculations, but professional users report that the lack of tap tempo and limited rhythmic resolution can slow down complex studio workflows.
Does Delay Calc require an internet connection?
Delay Calc functions as a local utility and does not require an active internet connection for its core calculation features.
Are there alternatives to Delay Calc for musicians?
Users seeking more advanced features should consider multi-function DAW controller apps or dedicated audio engineering tools that offer tap tempo and broader rhythmic support.

Sources

  1. [1] App Store, source

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Delay Calc, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “Delay Calc Intelligence Report.” Updated Sep 15, 2026. https://marlvel.ai/apps/delay-calc

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