BTR_OCC vs System Sound
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
BTR_OCC
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BTR_OCC App is a mobile app which is used as a tool for remote settings of BTR_OCC occupancy sensor.
System Sound
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Plays the system sound specified by the system sound ID.
Screenshots
Verdict
The clearest difference is ads: BTR_OCC at none against System Sound's shown. BTR_OCC also leads on iOS requirement (12.0 vs 15.8.3). System Sound's advantage is update cadence (every 2 weeks vs every 2 months). On price, in-app purchases and device support 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.
BTR_OCC ships an update every 2 months, System Sound every 2 weeks. The most recent releases landed on September 29, 2026 and October 3, 2026 respectively.
| Parameter | BTR_OCC | System Sound |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.8.3 |
| Further details — not scored | ||
| Size | 15 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | acv | Hideaki Uchikoshi |
In-app purchases
BTR_OCC
No in-app purchases
System Sound
No in-app purchases
