# 61°23° App > 61°23° App (iPhone/iPad app by Veli-Pekka Eloranta.) - Source: https://appshunter.io/ios/app/6123-app/id6758629231 (this page in markdown: same URL + `.md`) - Developer: [Veli-Pekka Eloranta](https://appshunter.io/developer/1874049020) - Category: Lifestyle, Navigation - Price: Free - Age rating: 4+ - Requires: iOS 16.0 · 31 MB - Languages: American English - Released: 2026-02-18 - Data updated: 2026-07-23 - User reviews in markdown: https://appshunter.io/ios/app/6123-app/id6758629231/reviews.md ## What is 61°23° App? For 61°23° Tampere blog readers: your local community blog, upcoming souvenirs, and a full mystery cache toolkit in one app. Stay current with everything happening in the 61°23° Tampere. Read the latest blogs from 6123tampere.com, see which souvenirs are coming up, 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. 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. Date pairs (alkaa / päättyy) are automatically merged into a single card with a clear date range. Add any event to your personal calendar with one tap, hide souvenirs you've already earned, and filter between All / Visible / Hidden views. 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. ## Version history (last 5 releases) ### 1.1.7 — 2026-07-16 This version adds support for different kind of tables in the blog posts so they render correctly ### 1.1.6 — 2026-07-06 This version adds support for gallery of images in blog posts. ### 1.1.5 — 2026-06-17 - Adds intersection of three circles tool with automatic calculation of most probable intersection point if the circles does not exactly intersect - Vigenere cipher tool - automatic solver without keyword in English and Finnish - Several user experience improvements to existing features ### 1.1.4 — 2026-06-05 Bug fixes and UX improvements - Copy texts from blog posts - Coordinate converter improvements - Splash screen updated ### 1.1.3 — 2026-05-18 Bug fixes • Links in the blog posts now properly open in the browser. • Coordinate projection tool now accepts decimal values in distance and bearing fields. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-23.*