Support

Yes. Every new install gets 14 days of Pro, with no purchase and no card. When it ends, choose Basic ($7.99/year) or Pro ($24.99/year). If you don't, nothing is charged and your data stays viewable and exportable; adding new entries needs a plan.

More › Target ranges. Pick a starting preset, then edit any minimum, ideal or maximum. Turn on "Link FC to CYA" to have free chlorine follow your stabilizer level.

From your pool's volume, the reading, your target's ideal value and the strength of the product you chose in More › My chemicals. pH doses use a buffer model that accounts for alkalinity, stabilizer, chlorine and borates. Doses are estimates: add in stages, follow the label, and retest.

Export a CSV test log from the other app, then in Pool Otter open More › Import & export › Import and choose the file. Rows already in the pool are skipped, so importing overlapping files is safe.

Drop kits (FAS-DPD and DPD), test strips and digital testers. In Pool details, pick your kit or scan the barcode on its bottle; Pool Otter remembers each barcode after the first scan. Drop kits get a drops-to-ppm counter on Log test.

No. Everything works on your phone without one. An account (More › Account & sync) backs up your data and syncs it to your other devices.

On your iPhone open Settings › your name › Subscriptions › Pool Otter. Cancel at least 24 hours before renewal. Deleting the app does not cancel the subscription.

Open More › Plans and tap Restore purchases. To bring your data, sign in to the same account in More › Account & sync.

More › Account & sync › Delete account. See Delete account.