Support

Questions, a problem, or a number that doesn’t match the book? Email us and include your iPhone model and iOS version.

Frequently asked questions

Does the app work without internet or cell signal?

Yes. Everything is built into the app, so every tool works in airplane mode, starting from the first time you open it. The only things that need a connection are buying or restoring Pro and opening the book’s page on Amazon.

How do I restore Grid Down Pro on a new or reset phone?

Sign in to the App Store with the same Apple ID you bought Pro with.
Connect to the internet.
Open the app and go to Settings → Pro → Restore Purchases. (The same button is on Tools → Pro tools.)

Pro is a one-time purchase, not a subscription. After it’s restored, it keeps working offline.

How do I back up my data?

Your data lives only on your phone, so a backup is a file you keep. Backup is part of Grid Down Pro.

Go to Tools → Pro tools → Backup and tap Back up to a file.
In the share sheet, choose Save to Files (or AirDrop it, or send it to yourself).

To restore, open the same screen, tap Choose a backup file, pick the file, and confirm. Restoring replaces the data currently on the phone.

What happens to my data if I delete the app?

It is deleted with the app. There is no account or server copy, so make a backup file first if you want to keep it.

Where do the numbers come from?

Every number (gallons, pounds, hold times, doses) comes from the book Grid Down: The 90-Day Survival Guide. They are rounded, practical estimates. Follow your equipment manuals and official guidance where they differ. The full safety notice is in the app under Settings → About.

The fridge timer alerts don’t show up.

Tap Turn on alerts on the Fridge timer screen, or allow notifications for Grid Down in the iPhone Settings app. Alerts are scheduled on the phone and work without a signal.