Composer Lab vs Kompute
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Composer Lab
Explore harmonic structures, scales, and microtonal tuning systems. This app offers tools for organizing pitch material, crafting custom tunings, and managing rhythmic units for songwriting and composition.
- Harmonic structure exploration
- Custom tuning system creation
- Rhythmic unit management
- Microtonal scale playback
- DAW file export (.scl, .tun)
- Pitch set theory principles
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Set Module: The Set Module enables musicians to explore harmonic structures and scales of all kinds, and discover new ways of organizing pitch material. Built on the principles of pitch set theory, it offers an intuitive interface along with a rich set of practical tools. Features include fixed superset, fixed subset, invariance calculation, interval vector constraints, unfolding, and numeric recombination mode. The module is designed to make working with complex musical ideas easier and more intuitive, and can be used in songwriting, arranging, film scoring, and concert music composition. Tempo Module: The Tempo Module allows users to set a range for rhythmic units and define a tolerance for timing variations. It supports a system where up to six different tempos can be freely switched and converted. Tuning Module: Start at 1/1 and craft your own tuning system with cents or ratios. Map it onto a standard keyboard so you can transpose in 12ET or in precise cent steps. Hear your microtonal scales live, then export .scl and .tun files straight to your DAW—unlocking boundless realms beyond the twelve-tone limit. New Euclid and Orbit modules added! Detailed guide will be updated shortly.
Kompute
This app provides 10 precision tools for music production and studio math. It includes features like tap tempo, delay time calculation, note-to-frequency conversion, and timecode arithmetic. Designed for offline use with no ads or tracking.
- Tap Tempo with metronome
- Delay Time Table
- Note to Frequency conversion
- Sample Length Converter
- Timecode Calculator
- Tempo-synced effects
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Kompute gives you 10 precision tools for studio math, all in one app. TAP TEMPO + METRONOME Tap to detect BPM with decimal precision. Built-in metronome. Round to nearest whole BPM or keep the exact reading. DELAY TIME TABLE Enter a BPM and see tempo-synced delay times for 21 note divisions. Normal, dotted, and triplet values in both milliseconds and Hz. NOTE TO FREQUENCY Convert any musical note to Hz. Supports 100+ temperaments beyond standard equal temperament. Adjustable concert pitch. Audio preview per note. FREQUENCY TO NOTE Enter a frequency, find the closest musical note with cents deviation. Identify the pitch of any sound. SAMPLE LENGTH CONVERTER Bidirectional conversion between samples, milliseconds, seconds, bars, and beats. Edit any field, all others recalculate. TEMPO CHANGE CALCULATOR Calculate time-stretch ratio and transposition when changing from one tempo to another. Shows stretch percentage, tempo delta, and semitone shift. TIMECODE CALCULATOR Full timecode arithmetic for video and film. Add, subtract, and multiply timecodes. Supports 10 FPS formats including 23.976, 29.97 drop frame, and 59.94. REVERB PRE-DELAY Calculate tempo-synced pre-delay values. Small, medium, large, and hall presets. Keep your reverb rhythmically aligned. COMPRESSOR SYNC Tempo-synced attack and release times. Lock your dynamics processing to the groove. EQ REFERENCE CHART Visual reference of frequency ranges by instrument and tonal character. Sub-bass through brilliance, with descriptions. CROSS-MODULE DATA FLOW Detect a tempo via Tap Tempo and it automatically transfers to Delay Table, Reverb, and Compressor modules. No ads. No tracking. No account required. Works fully offline. From All The Machines.
Screenshots
Verdict
The clearest difference is price: Kompute at $1.99 against Composer Lab's $17.99. Kompute also leads on iOS requirement (15.0 vs 18.2). Composer Lab's advantage is update cadence (every 3 days vs every 8 days). On rating, 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
Composer Lab costs $17.99 and Kompute $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Composer Lab against 5.0 for Kompute. Both are backed by a comparable volume of ratings — 2 and 1 respectively.
Composer Lab ships an update every 3 days, Kompute every 8 days. Both last shipped on November 5, 2026.
| Parameter | Composer Lab | Kompute |
|---|---|---|
| Price | $17.99 | $1.99 — better |
| Rating | 5.0 (2 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 3 days — better | Every 8 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 18.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 49 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | 笑一 杨 | Stephan Bolch |
Customer experience
Composer Lab
Kompute
In-app purchases
Composer Lab
No in-app purchases
Kompute
No in-app purchases









