Roundtail Straight

For iPhone · Free

Roundtail
Straight

"A dog's tail won't straighten.
You try anyway."

Write short reminders in your own words. The app keeps them in front of you — across your home screen, lock screen, StandBy, and notifications — until the behavior sticks.

Download on the App Store

Coming soon · Requires iOS 26

Roundtail Straight app showing thought cards on iPhone

Reminders that find you

Across every surface on your iPhone.

Home Screen Widget

Roundtail Straight

speak slower

Lock Screen

9:41

Monday, June 15

smile first

StandBy

Today's reminder

be curious

Notification

R

Roundtail Straight

speak slower

R

Roundtail Straight

smile first

Private by design

"We have no servers. We cannot see your data."

On your device

Everything you write stays on your iPhone. No servers, no backend — we have no access.

Your own iCloud

Sync runs through your own Apple Account, not ours. Apple's privacy policy governs it.

No accounts, no tracking

No sign-up. No analytics. No ads. No third-party SDKs watching what you do.

Free forever

No subscription, no in-app purchases, no upsell. The whole app, forever.

Read the full Privacy Policy →