Serafim Audio vs Cast Volume
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Serafim Audio
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Serafim Audio is an exclusive app for Serafim A-series headphones. If you have any quetions, please leave a comment or email to us. sales@serafim-tech.com
Cast Volume
Control the volume of your Chromecast and Google TV devices quickly and reliably. Create homescreen widgets for seamless adjustments, mute playback, and fine-tune volume precisely without jumping. This app offers a volume-first design, prioritizing ease of use for all casting devices.
- Homescreen widgets for volume control
- Control multiple devices
- Instant volume adjustment
- Precise volume fine-tuning
- Mute playback
- Volume-first design
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Your favourites. Your volume. At your fingertips. Start a saved favourite and set the volume straight from your Home Screen. CastVolume puts speaker controls where you need them, with familiar widgets for Sonos, WiiM, Chromecast and compatible LinkPlay devices. FAVOURITES, ONE TAP AWAY Play saved Sonos Favourites, WiiM Home favourites and supported LinkPlay presets from the Favourites widget. Keep favourite stations, albums or playlists within reach, alongside playback and volume controls. Save favourites in your speaker’s usual app, then open Favourites in CastVolume to load them. Available content depends on the speaker and music service. Chromecast supports volume widgets; music favourites are not supported. QUICK CONTROLS • Discover receivers on your network, or add Sonos, WiiM and LinkPlay by local IP. • Adjust volume and mute from the app and interactive widgets. • Use Play/Pause for Sonos and LinkPlay. Sonos playback follows the room’s current group; start or choose music in the speaker’s app first. • Follow the in-app widget guide to choose a device, add Volume Remote and check installation. FREE AND PREMIUM All brands, in-app controls, saved speakers, colours and volume steps are free. Free widgets and Controls share one chosen speaker. Premium lets each widget and Control use its own speaker, with a one-time purchase. An optional 30-day free trial has no automatic charge. When it ends, your chosen free speaker keeps working; additional widget targets need Premium. Your setup is kept. Existing Premium purchases stay unlocked. No subscription or ads. COMPATIBILITY Your phone and receiver must share a local network, with Local Network access allowed. Sonos uses local UPnP and requires compatible Connection Security settings. Portable speakers must be awake or powered on. WiiM requires Fixed Volume Output to be disabled. LinkPlay support depends on its local HTTP API and firmware; it is not a promise of compatibility with every LinkPlay-based product. AirPlay-only receivers are not supported. Widgets display the last confirmed state and refresh after commands; changes in other apps may not appear immediately. Play/Pause does not select new music, and some sources may not support playback control. A locked iPhone may require unlocking before a command runs. DENON / MARANTZ HEOS Control the volume, mute and current playback of HEOS-enabled Denon and Marantz players with Volume Remote and speaker Controls. Receivers advertising on the local network may appear automatically; otherwise add one by local IP. Keep at least one HEOS receiver awake. HEOS favourites, AVR power and input selection remain in the HEOS app. Compatibility depends on the model, firmware and audio source.
Screenshots
Verdict
The clearest difference is in-app purchases: Serafim Audio at none against Cast Volume's 2. Serafim Audio also leads on iOS requirement (13.0 vs 18.6). Cast Volume's advantage is update cadence (every 2 weeks vs every 3 months). On price, ads 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. Cast Volume sells 2 one-off in-app purchases. Serafim Audio asks for nothing beyond the download.
Serafim Audio ships an update every 3 months, Cast Volume every 2 weeks. The most recent releases landed on October 13, 2026 and October 25, 2026 respectively.
| Parameter | Serafim Audio | Cast Volume |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 3 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 13.0 — better | 18.6 |
| Further details — not scored | ||
| Size | 18 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Serafim Technologies Inc. | Søren Thorup |
In-app purchases
Serafim Audio
No in-app purchases
Cast Volume
- 30-day TrialFree
- Premium Unlock$2.99









