Support

For a question, a mistake in a lesson or an ad to report, write to contact@octo-scuba-diving-theory.app. Tell us the level, lesson or question (for example “Open Water · L11 · question 3”).

Where did my progress go?

Your Octo progress is saved on your iPhone and follows its backups (iCloud or computer). Reinstalling the app without a backup starts from scratch. There is no account, so progress can’t be restored from a server: see the privacy policy.

How do I restore Octo Pro?

Open Settings › Octo Pro › Restore Purchases in the app, with the same Apple Account you bought with. Octo Pro is a one-time purchase: it comes back on your other iPhones at no cost.

How do I switch between meters and feet?

Octo uses your region’s units by default. Change them in Settings › Units: meters and bar, or feet and psi. Lessons, diagrams and calculations follow your choice. How Octo works shows what each part of the app does.

An answer looks wrong. What should I do?

Write to us and quote the question. Every report is read, and confirmed mistakes are fixed in an app update. Meanwhile, and whenever in doubt, your instructor’s word comes first.

Is Octo an official app?

No. Octo is an independent, unofficial app, not affiliated with or endorsed by PADI or any other training agency.