Off-Grid Power Planner

Plan your off-grid power before you buy or before you go. Off-Grid Power Planner estimates how long a portable power station or battery bank will run your devices, how much solar you need to keep up, and whether your inverter can handle start-up surge.

Private by design: no account, no ads, no tracking. Your plans stay on your phone. The formulas match the calculators on offgridsizer.com and are covered by automated tests.

Support

Questions, bug reports or deletion requests: edenworks@mail.grokbot.com.

• Privacy Policy
• Terms of Use

Pro plans

Free covers up to 6 devices per plan, 1 saved plan and 6 calculators. Pro unlocks unlimited devices and saved plans plus all 19 calculators. Pricing on the App Store: $2.99/month, $14.99/year (1-week free trial) or $29.99 lifetime.

Subscriptions renew through your Apple ID until you cancel in Settings. Refunds follow Apple's policies.