Sub System vs GCP
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Sub System
This app allows audio engineers and sound designers to visualize sound pressure levels and their interactions. Users can place virtual speakers and microphones, manipulate them with touch gestures, and observe colorful graphs of SPL and frequency response to understand acoustical summation.
- Virtual speaker placement
- Sound pressure level visualization
- Frequency response graphs
- Virtual microphone simulation
- Touch-based manipulation
- Acoustical summation understanding
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An app for audio engineers and sound designers. It will let the user place virtual speakers around and see the sound pressure levels that they produce, including the interactions between sources. Colorful graphs for SPL. Frequency response based on virtual microphones. Speakers and Mics are moved around using touch functions. Zoom in, out. All graphics are touchable. Best use is to understand how acoustical summation is produced.
GCP
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Verdict
The clearest difference is price: GCP at Free against Sub System's $30.00. Sub System's advantage is update cadence (every 10 days vs every 3 months) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
GCP is free to download; Sub System costs $30.00 up front. Neither carries in-app purchases, so what you see is what you pay.
Sub System ships an update every 10 days, GCP every 3 months. The most recent releases landed on October 7, 2026 and September 28, 2026 respectively.
| Parameter | Sub System | GCP |
|---|---|---|
| Price | $30.00 | Free โ better |
| Positive reviews | 100.0% of reviews | โ |
| Update frequency | Every 10 days โ better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | โ |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 48 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | sebastian rivas | Davy Raitt |
In-app purchases
Sub System
No in-app purchases
GCP
No in-app purchases
Questions
Is Sub System free?
Is GCP free?
Do Sub System or GCP have ads?
Which is updated more often, Sub System or GCP?
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