Bluezone Pool vs Holler
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Bluezone Pool
Control your swimming pool's filter system and lighting directly from your smartphone. This app connects via Bluetooth to manage startup, timing, and monitor the status of your pool's equipment.
- Manual filter system startup
- Spotlight control and timing
- Filter cycle and lighting timing check
- Equipment status monitoring
- Filter pump problem detection
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BZP is a new way to control your swimming-pool. This app allows to manage the swimming-pool controller BLE-pool only by using your smartphone, thanks to the integrated Bluetooth connection. With this app you can: - Start-up the filter system manually. - Turn on/off the spotlights of the swimming-pool and select the lighting timing. - Check the BLE-pool clock, the start/stop times of each filter cycle or lighting, in addition to the length of these cycles. - Know the state of the filter system and lighting. - Know if the filter pump has any problem.
Holler
Transform your Sonos speakers into a whole-home intercom system. Broadcast live messages, record and send announcements, or play pre-made sounds across one room or many. It's designed for privacy, working locally on your Wi-Fi without accounts or tracking.
- Whole-home intercom for Sonos
- Live microphone broadcasts
- Record and send announcements
- Play pre-made sounds
- Selectable room grouping
- Restores previous Sonos settings
- Local and private operation
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Turn your Sonos speakers into a whole-home intercom. THREE WAYS TO BE HEARD • Live — start a continuous microphone connection without holding a button • Message — record a short announcement, then send it • Sounds — play ready-made household, attention, and ambience sounds ONE ROOM OR MANY Choose one room, select several rooms, or reach everywhere. Holler temporarily groups compatible rooms so announcements stay synchronized. LEAVES YOUR SONOS SYSTEM THE WAY IT FOUND IT When an announcement ends, Holler restores each room's previous grouping, playback, and volume whenever the speaker makes that state available. LOCAL AND PRIVATE BY DESIGN Holler works directly with speakers on your Wi-Fi. There is no Holler account, advertising, tracking, or Holler-operated audio relay. Remote broadcasting from outside your reachable home network is not supported. Keep Holler open while using Live. If the app leaves the foreground or the microphone is interrupted, Holler stops the broadcast and restores your Sonos system. TRY EVERYTHING All features are available during the seven-day trial. Afterward, one lifetime purchase unlocks Holler permanently—no subscription. Holler requires compatible Sonos speakers on a network your iPhone or iPad can reach. Sonos S1 and S2 systems remain separate and cannot be grouped together. Holler is an independent app and is not affiliated with, endorsed by, or sponsored by Sonos, Inc. Sonos is a trademark of Sonos, Inc. Included alarm and siren sounds are provided for entertainment and attention-getting use only. Holler is not an emergency warning or life-safety system.
Screenshots
Verdict
The clearest difference is rating: Holler at 5.0 against Bluezone Pool's 3.2. Holler also leads on update cadence (fortnightly vs every 7 months). Bluezone Pool's advantage is in-app purchases (none vs 1) and ratings volume (11 vs 1). On price, 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
Both are free to download. Holler sells 1 one-off in-app purchase. Bluezone Pool asks for nothing beyond the download.
Holler holds the better App Store score, 5.0 against 3.2. That said, the two scores are not equally well evidenced: Bluezone Pool has 11 ratings behind it against 1, so its average is the more settled of the two.
Bluezone Pool ships an update every 7 months, Holler fortnightly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Bluezone Pool | Holler |
|---|---|---|
| Price | Free | Free |
| Rating | 3.2 (11 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 11 — better | 1 |
| Update frequency | Every 7 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 5 MB |
| Age rating | 4+ | 9+ |
| Developer | Toscano Linea Electronica SL | Task One LLC |
Customer experience
Bluezone Pool
Holler
In-app purchases
Bluezone Pool
No in-app purchases
Holler
- Holler Pro$2.99









