Clue Tracker is the ultimate letterboxing app for iOS. Quickly and easily find Atlas Quest and LbNA boxes, organize clues, view maps, record finds, and more.

• Find nearby letterboxes based on your current location.
• Search for boxes by location, box name, planter, box ID, and much more.
• View detailed letterbox information including last found date, series details, and comments.
• Show letterboxes on a map and get directions to a box.
• Built-in compass display (device support required).
• Quickly and easily record finds.
• Save clues and other letterbox information for offline use.
• Organize saved letterboxes into your own lists and reorder boxes to create custom itineraries.
• Share a list of saved letterboxes with another Clue Tracker user (or transfer the list to another iOS device).
• Sort and filter search results and lists of saved letterboxes.
• Change the location of a saved letterbox.
• Add Word-Of-Mouth (WOM) letterboxes.
• Add your own photos to saved boxes and WOM boxes.
• Add personal notes.

Are you new to Letterboxing? Learn more about this intriguing activity at or

Pearl Crescent and Clue Tracker are not affiliated with Atlas Quest or LbNA.

What's New

Version 4.0

• Improved support for iOS 11 and iPhone X.
• Transitioned the second tab within the app from “Location” to “Advanced” and added the capability to search for Hitchhikers, Cooties, Fleas, Personal Travelers, and Event Boxes.
• Added display of comments for both LbNA and Atlas Quest boxes.
• Added help to the Nearby and Advanced search screens. To access it, tap the (?) icon that is located in the top-right corner of both search screens.
• Added support for a “Find Nearby Boxes” force touch shortcut. Deep press the app icon on the iOS home screen to use this feature.
• Punctuation and articles (e.g., ‘the’) are now ignored when sorting by box name.
• Photos may be included when exporting / importing boxes.
• A wrench is displayed next to the name of Atlas Quest boxes that need repair.
• Fixed miscellaneous bugs and made other minor improvements.

Your feedback and App Store ratings and reviews are greatly appreciated! Please note that Clue Tracker will now occasionally prompt you to rate the app.

Ratings and Reviews

4.8 out of 5

28 Ratings

28 Ratings

Great App


I wanted a Letterboxing app so I wouldn't have to go to the website, log in, search, and pick. There are two apps available. The other one had great reviews, but a lot of comments on features that would be great to have. This app, although I had to pay more for it, has all the features the other app is missing. I love that you can choose between AtlasQuest and LbNA. The interactive map feature is exactly what I wanted. Best of all, it is fast.

I just downloaded this app and haven't even had a chance to use it yet. I hope it is as awesome in use as it is in initial reviewing. I will update my review once I have a chance to actually use it.

Excellent for saving - a few quirks


I love the “Saved” letterbox feature - I use it to categorize into parks or neighborhoods and it saves me from having to search again.

However the search has some problems. I tried to search for a box with a numeric name and it changed the search from name to box number so I had to go to the website on my Safari browser and get the box number and put that in in order to save that box on this app. Also the search results only give you 50 boxes and some boxes that I remembered seeing online are not found.

This app could be vastly improved just by adding more criteria to the search feature.

Just OK


Bought this while we were boxing away from home on vacation. It was helpful in that we were able to access many boxes and their clues from one app. The map function however is not very accurate. More often than not, the boxes were not near where they were indicated by the map. For at least two different boxes, it was off by 10 miles or more and as a result we ran out of time and didn't get look for them. We knew this once we compared the clue directions to the map. :-(


Pearl Crescent LLC
10.6 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2018 Pearl Crescent LLC


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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