Why we built Leann offline-first

Think about the gyms you’ve trained in. Basements. Concrete walls. Steel racks everywhere. Wi-Fi with a password nobody knows. Gyms are some of the worst places for a phone signal, and they’re exactly where you need your workout log to work.

The problem with “cloud-first”

Many apps save your data to a server first and show it on your phone second. That’s fine on a fast connection. In a dead zone it means spinners, “couldn’t save” errors, and sometimes a lost workout. Nothing kills motivation faster than finishing a hard set and watching it vanish.

What offline-first means in Leann

In Leann, your phone is the source of truth.

• Every set saves on your device the instant you tick it. No network request, no waiting.
• The whole app works in airplane mode: logging, rest timer, history, records, charts, programs and suggestions.
• If you choose to sign in, Leann backs up and syncs quietly in the background when you’re back online, so you can move to a new phone without losing anything.

It’s faster, too

Because nothing waits on a server, everything feels instant. Opening the app, starting a workout and ticking a set happen right away. That speed adds up over hundreds of sets.

It’s more private

When your data lives on your phone first, there’s simply less of it travelling around. Leann has no ads, doesn’t require an account, and lets you export everything (CSV or full JSON) or delete your account from inside the app. We’d rather earn your trust than your data.

Our promise

Logging workouts, your history, records, routines and full data export will always be free. In the future, Leann Pro will add advanced extras for people who want them, and founding members will get it free. The core of a gym log, the part you rely on every session, should never sit behind a paywall or a loading spinner.

Thanks for being here early. If you have ideas, we’d love to hear them.