• The world’s first fully private end-to-end encrypted mapping platform!
  • Built for the outdoor enthusiasts that need simple, extremely private, blazing fast maps.
  • Features:
  1. 🔒 End-to-End encrypted (E2EE) user data (pins, tracks, notes, pictures, etc.)
  2. ⛺ Offline maps
  3. 🚶 Trails
  4. 🧰 Measuring tools
  5. 🦌 Hunt / game lands
  6. 🏠 Parcel data
  7. ⛰️ Terrain features / isolines / hill shading
  8. ✅ Simple maps and user interface
  9. ⚡ Blazing fast maps
  10. 🔋 Efficient battery usage
  11. ♾️ You own your data forever. Offline maps don’t expire and export your data anytime.
  • With none of the 💩:
  1. 🚫 No social media SDKs
  2. 🚫 No private data harvesting / mining
  3. 🚫 No ads
  4. 🚫 No 3rd party data brokers
  5. 🚫 No trail ratings
  6. 🚫 No “AI”

App Auto Lock Now Available

App Auto Lock is now available in iOS version 1.3.0 that was released to the App Store on June 21, 2024. This allows you to configure the behavior of when the app locks and how often. This mimics some of the behavior found in popular apps like Signal and Proton Mail. You can read about the security of Auto Lock on the security page. Here is a screenshot of the Auto Lock settings on iOS: ...

June 22, 2024

USGS Topo Mosaic Map Now Available

A USGS* Topo mosaic base map is now available for the continental US, Alaska, Hawaii, Puerto Rico, and Virgin Islands! The map uses the latest topo maps as of 2024 from the USGS. This map is up-to-date with the latest topo maps offered by the USGS. Read here for more information how we made the map! Below are some examples of what the USGS topo looks like in the iOS app: ...

March 5, 2024

iOS App Now Available

The Topo Lock Map iOS app is now generally available. We had dozens of beta testers and we appreciate all the support! Find all of our features here.

February 12, 2024

End-to-End Encrypted Maps

End-to-End encryption 🔒 (E2EE) is awesome … it’s one of the best things we can do to protect our digital lives. For geeks you can read about the specifics of Topo Lock Maps encryption here. What is E2EE? E2EE is when data is encrypted with an encryption key that never leaves your control. Therefore, even if the data was in someone else’s possession, they would not have the key to decrypt the data. ...

September 1, 2023

Paper Maps For The Win

There is no substitute for a paper map in the woods. The first time I hiked on the Appalachian Trail was in 2009 with my college buddies. We didn’t really realize it at the time, but looking back none of us had smartphones and none of us had an electronic map. All we had was a national geographic paper map. It was an awesome experience leaving society behind, being in the woods with no electronic devices. ...

August 1, 2023

Topo Lock Platform Tech Stack

Putting together a mapping platform is no small feat. What does our tech stack look like? Backend: AWS Serverless active-active architecture Deployed to Ohio (us-east-2) and Oregon (us-west-2) Cloudfront, API Gateway, Lambda, DynamoDB Global Tables, S3 Infrastructure as Code: CDK AWS multi-account secured with hardware keys (YubiKeys) CI/CD: Github Actions Maps: Protomaps Maplibre Leaflet Data Engineering: DuckDB & DuckLake (As of May 2025) AWS Step Functions & Lambda GeoPandas GDAL Mobile: ...

July 1, 2023