SunReserve: Off-Grid Power turns solar math into a hands-on canvas. Tilt a panel, load up your appliances and see exactly how many hours your battery will hold, with zero signal required.
Drag the panel across balconies, roofs or portable stands and watch the sun angle and output respond instantly.
See your battery drain in real time as appliances switch on, and know how many hours remain.
Stack fridges, routers, lights and laptops to get exact peak wattage and daily capacity drain.
Combine peak sun hours, panel rating and seasonal losses into a daily watt-hour figure.
Save blackout-readiness scenarios and equipment loadouts on your device for later.
Plan in a basement, a campsite or a dark neighborhood. No connection needed, ever.
☀️ We are a small team of engineers, campers and blackout survivors who got tired of spreadsheets and guesswork when the lights went out.
🎯 Our mission is simple: make off-grid power planning clear, calm and available to anyone, anywhere, without needing a signal.
🔋 SunReserve gives you a touch-friendly solar canvas, a multi-device load engine, runtime forecasts and a vault for your saved setups.
🌍 It matters because the right panel angle and an honest watt-hour budget can mean the difference between a cold fridge and a spoiled one.
Plan the sun. Own the night.
SunReserve: Off-Grid Power does not collect, store or share any data. Everything, from tilt angles to saved scenarios, runs locally on your device.
None. We do not collect personal information, usage statistics, location, device identifiers or the appliance and battery values you enter.
Because nothing is collected, nothing is used. Values you enter are used only on your device to calculate generation, load and runtime.
Saved scenarios in the Power Vault are stored locally on your device only. There is no cloud storage and no server-side copy.
The app contains no analytics, advertising networks, trackers or third-party SDKs that transmit information.
Since your data never leaves your device, it is protected by your device's own security features such as passcode and encryption. We recommend keeping them enabled.
We collect no personal information from anyone, including children under 13, which is consistent with COPPA. The app is safe for family use.
There are no accounts to manage. You can remove all saved data at any time by deleting scenarios or simply uninstalling the app.
If this policy changes, we will update this page and revise the effective date. Our commitment to collecting no data will remain.
Questions about privacy? Write to privacy@sunreserveoffgridpowerapp.com.
💬 Got a question, a feature idea or a wild off-grid build to share? We would love to hear from you, so drop us a line.
⏱️ We reply to every message within 24 to 48 hours.