Documents · First seen May 13, 2026 · Updated Nov 7, 2026
Secure cross-platform local-first file vaults
- Overall
- 44
- Competition
- High
- Momentum
- -100%
- Signals
- 7
The gap
Professionals using Obsidian and Microsoft OneDrive struggle with secure file storage that is both local-first and seamlessly synced across devices. Current tools either force cloud sync or have restrictive access controls that hinder productivity on mobile devices.
Build brief
Must-have features
- 1Custom local storage pathsUsers cannot choose where to store app data on mobile devices.
The full brief: the first version to ship, all 6 must-have features, what 4 current products charge, the 2 communities where they ask, with the top post in each.
With Pro (coming soon).
What people say
“Great app for world building the only issue is you can’t access vaults made on one device from another which sucks. I love this for world building but I don’t want to pay 4 dollars a month to sync the vaults once! It slows the entire process and makes me want to use another app”
Cannot access vaults across different devices without a paid subscription
Link to thread: Pro6 more complaints from 7 people in all (6 from App Store, 1 from Google Play), each linked to the thread or review where it was said. Reply there and you're talking to your first customers.
Open them with Pro (coming soon), or claim one of the day's free picks.
Existing products
See the 4 products people complain about here, with ratings and weak spots. Free with an account.
Scores
Implementing secure, cross-platform local-first synchronization with robust encryption is technically complex and prone to errors.
Computed from the signals below (formula v2), Nov 12, 2026.
Overall opportunity
44/100
Ranked #58