Si vs Deeck
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Si
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Features 1. APP remote monitoring and management, Optional automatic/manual mode 2. APP fast switch light,light status monitoring 3. Scan QR code to share light to friends 4. Drive away the birds
Deeck
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Know how long your battery will last, in days and hours. Deeck puts the power system of your camper, van, boat or off-grid home on one clear screen: battery, solar, engine charging, shore power and what you are using right now. Works with Victron Energy devices over Bluetooth: battery monitors, solar chargers, chargers and inverters show up on their own. WHAT YOU GET β’ Dashboard: battery charge, voltage, current and where the power is flowing, live. β’ Energy balance and autonomy: what you produce against what you use, and the time left in days and hours, counted down to the reserve you choose. β’ Solar forecast (Plus): days ahead, so you know whether the weather keeps you above your reserve. β’ History: battery and energy over the last day, week or month. β’ Alarms and notifications: low battery, voltage and temperature. With Deeck Bridge, a small companion that stays on board, alerts reach you even when the app is closed (Plus). β’ Apple Watch (Plus): battery and autonomy on your wrist, also as a watch-face complication. β’ Widgets: battery, autonomy and the weekly balance on your Home Screen. β’ CarPlay (Plus): your battery on the car display while you drive. β’ Siri: ask for the battery, the autonomy, the solar production or a full summary. β’ Remote with VRM (Plus): connect your VRM account and see your system from anywhere. β’ Backup: move to a new iPhone in one step, with automatic iCloud backup (Plus). β’ Demo: try every screen with a simulated system, no hardware needed. DEECK PLUS Deeck is free to download and shows your system live over Bluetooth. Deeck Plus, a yearly subscription, unlocks everything: solar forecast days ahead, your system and its alerts from anywhere, advanced multi-threshold alarms, extended history and export, CarPlay, Apple Watch, dashboard mode lock and iCloud backup. Payment is charged to your Apple ID. The subscription renews automatically unless cancelled at least 24 hours before the end of the current period; you can manage or cancel it anytime in your Apple ID settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://deeck.app/privacy/ Deeck is an independent app, not affiliated with or endorsed by Victron Energy B.V. Victron Energy is a trademark of its owner.
Screenshots
Verdict
The clearest difference is in-app purchases: Si at none against Deeck's 1. Si also leads on iOS requirement (9.1 vs 15.0). Deeck's advantage is update cadence (every 4 days vs every 5 months). On price, ads and device support there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
Both are free to download. Deeck sells 1 in-app purchase, starting at $34.99 per year. Si asks for nothing beyond the download.
Si ships an update every 5 months, Deeck every 4 days. The most recent releases landed on November 11, 2026 and November 13, 2026 respectively.
| Parameter | Si | Deeck |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 months | Every 4 days β better |
| Ads | No | No |
| In-app purchases | No β better | Yes |
| Devices | iPhone, iPod | iPhone, iPod, Apple Watch β better |
| Requires iOS | 9.1 β better | 15.0 |
| Further details β not scored | ||
| Size | 12 MB | 44 MB |
| Age rating | 4+ | 4+ |
| Developer | ζζ₯δΈζΉ | Davide Di Benedetto |
In-app purchases
Si
No in-app purchases
Deeck
- Deeck Plus7 Days trial$34.991 Year





