Transfer Function vs MINIBUS Player
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Transfer Function
This app performs dual-FFT acoustic analysis for sound systems, including music. It offers magnitude, phase, and coherence graphs, a delay finder, and a signal generator. It can operate with internal microphones or external audio interfaces for comprehensive sound system monitoring and equalization.
- Dual-FFT acoustic analysis
- Magnitude, Phase, Coherence graphs
- Delay Finder
- Signal Generator
- Music as signal source
- Internal microphone support
- Two-channel audio interface compatibility
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Transfer Function is a dual-FFT acoustic analysis app that is used for sound system audio analysis. Since it can operate with music as the signal source, it can be used during a musical performance to monitor and turn the system equalization during the show. Transfer function includes: -- Magnitude Graph -- Phase Graph -- Coherence Plot -- Delay Finder -- Signal Generator Normally a transfer function requires a two-channel interface, and that is true with this one, also, if you want to use it with program material (music). However, you can use our Transfer Funciton with the internal iOS microphone, if you can send the pink noise generator output to the sound system input. In this configuration, the internal generator is routed back to the input as the reference channel. You can measure delay, magnitude, and phase using this setup. When you use Transfer Function with a two-channel audio interface to run, such as the Studio Six Digital iAudioInterface2, then you can also use any audio source as the test signal, including music. See our website for more information.
MINIBUS Player
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Monitor mixes on iPhone or iPad, listen in Apple Spatial Audio with AirPods, or stream audio from your iPhone or iPad directly back into your DAW. MINIBUS iOS makes it easy to add wireless monitoring and audio input to your studio workflow.
Screenshots
Verdict
The clearest difference is price: MINIBUS Player at Free against Transfer Function's $49.99. MINIBUS Player also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 6 months). On 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
MINIBUS Player is free to download; Transfer Function costs $49.99 up front. Transfer Function sells 1 one-off in-app purchase. MINIBUS Player asks for nothing beyond the download.
Transfer Function ships an update every 6 months, MINIBUS Player every 2 months. The most recent releases landed on September 24, 2026 and August 17, 2026 respectively.
| Parameter | Transfer Function | MINIBUS Player |
|---|---|---|
| Price | $49.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 25.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 33 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Smith | VIRGIN RECORDS LIMITED |
In-app purchases
Transfer Function
- Reference Curves Option$14.99
MINIBUS Player
No in-app purchases
Questions
Is Transfer Function free?
Is MINIBUS Player free?
Do Transfer Function or MINIBUS Player have ads?
Which is updated more often, Transfer Function or MINIBUS Player?
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