
61°23° App
Geocaching blog and tools
0 ratings
Free
About
For 61°23° Tampere blog readers: your local community blog, upcoming souvenirs, a Wherigo cartridge player, and a full mystery cache toolkit in one app.
Stay current with everything happening in the 61°23° Tampere blog. Read the latest articles from 6123tampere.com, see which souvenirs are coming up, play Wherigo cartridges, and solve mystery caches faster with a dedicated set of tools all without leaving the app.
BLOG
Read posts from 6123tampere.com with full text search. Tap any image to open it fullscreen with pinch-to-zoom and pan. Photo galleries render as a thumbnail grid that opens a swipeable viewer with captions, and embedded YouTube videos play right in the article. Links between posts open in the app instead of the browser. Adjust text size with the built-in A−/A+ control (five steps from 0.9× to 1.5×) for comfortable reading in any lighting. Get a push notification the moment a new post is published.
SOUVENIRS
See upcoming geocaching souvenirs pulled live from the 61°23° Tampere calendar. Multi-day events stay visible until they end. Add any event to your personal calendar with one tap, hide souvenirs you've already earned, and filter between All / Visible / Hidden views.
CARTRIDGES
Play Wherigo cartridges without a second app. Import a .gwc file and it lands in your library with its artwork and status. Play it on a map that shows your position and the zones around you: an active zone's border thickens as you approach, out-of-range zones are dashed, and every zone the cartridge has opened stays on the map marked as visited. Tap a location in the list to get a live distance and bearing to it. Save mid-game and continue later, and the app asks before you leave a session with unsaved progress.
MYSTERY CACHE TOOLS
Everything you need to crack the mystery caches in your queue:
• Coordinate converter — DD, DMS, and DMM with cardinal direction support
• Distance & bearing calculator across all coordinate formats
• Waypoint projection from a start point, bearing, and distance
• Multi-Cache solver — coordinate formulas with letter variables and math, with built-in validation
• ROT13 / Caesar cipher
• Morse code decoder — type by hand, listen via the microphone, or decode from a local or remote audio file (WAV, MP3, M4A, AAC, FLAC)
• Gade cipher for substitution puzzles
• Word Value calculator (A=1, B=2…) with full Finnish character support
• Reverse Wherigo solver for Waldmeister (3 codes with checksum) and day1976 (2 codes), including letter variables
• Antipodes — find the point on the opposite side of the Earth
• GPS Average — average multiple GPS samples over a configurable duration with accuracy weighting and outlier removal for more accurate cache hides
Results display in DD, DMS, and DMM formats with one-tap "Open in Maps" for navigation.
Built for the geocaching community, by a community member.
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What's New in 61°23° App
1.2.1
September 21, 2026
• Wherigo player: a new Cartridges tab for playing .gwc cartridges right in the app. Map with zones, inventory, tasks and locations, plus saving and resuming a game. • Support for imperial units in calculation tools. • Like a blog post without leaving the app. • YouTube videos and links between posts now open in the app. • Images and galleries in older posts finally render correctly. • Accessibility: VoiceOver labels, Reduce Motion support, map zones readable without colour.
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