# GC Wizard — Geocaching Multitool > Open-source geocaching multitool with cryptography, coordinate calculations, and scientific tools. (iPhone/iPad app by Mark Lorenz.) - Source: https://appshunter.io/ios/app/gc-wizard/id1506766126 (this page in markdown: same URL + `.md`) - Developer: [Mark Lorenz](https://appshunter.io/developer/1506766125) - Category: Reference, Games - Price: Free - Rating: 4.80/5 from 5 App Store ratings - Age rating: 4+ - Requires: iOS 14.0 · 130 MB - Languages: American English, Dutch, French (France), German (Germany), Korean, Polish, Slovak, European Spanish, Swedish - Released: 2020-06-23 - Data updated: 2026-07-21 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/gc-wizard/id1506766126/reviews.md ## What is GC Wizard? The GC Wizard is an open-source tool collection. It was originally created to offer Geocachers an offline tool to support them with in-field mysteries and riddles. So, the GC Wizard contains numerous tools for simple cryptography, geographic and scientific calculations as well as hundreds of sets of various symbols. Meanwhile the project became very huge and might be practicable for many non-Geocaching issues. General • Formula Solver: For handling multi stage variables • Multi Decoder: Enter an unknown code and let several decoders and calculators interpret it in a row • More than 200 sets of Symbol Tables: Direct decoding symbols to characters; save own encoding as an image • Online Manual: Every tool has its own manual page Cryptography & Encodings • Alphabet Values (A = 1, B = 2, ...): Configurable alphabets with language specific special character handling • Braille graphical decoder: Type the points into a graphical interface; supports different languages • Book Cipher: Choose the correct system (e.g. Line + Letter Number or Section + Line + Word Number, ...), handle special characters and empty lines, ... • Enigma: A full working Enigma simulator incl. numerous possible settings • Esoteric Languages: Generators and interpretors for several esoteric programming languages like Brainf**k, Ook, Malbolge and Chef • Morse • Numeral Words: Lists of important numbers in different languages. For English + German there are parsers to identify even complex numeral words • Substitution and Vigenère Code Breakers: Try to find the solution without knowing the keys • Classic Codes: Playfair, Polybios, Railfence, ... • Historic codes: Caesar, Vigenènere, telegraph codes, ... • Military codes: ADFGX, Cipher Wheel, Tapir, ... • Technical encodings: BCD, CCITT, Hashes (incl. brute-force hash breaker), RSA, ... Coordinates • High precision coordinate algorithms which support precise calculations even with very long distances by always considering the earth's shape (ellipsoid) • Support of different ellipsoids, even other planets • Coordinate Formats: Support of UTM, MGRS, XYZ, SwissGrid, NAC, PlusCode, Geohash, ... • Waypoint Projection: Includes precise reverse projection • Open Map: Set own points and lines, measure paths, export as and import from GPX/KML; OpenStreetMap and satellite view • Variable Coordinate: Interpolate coordinate formulas if some parts of coordinate are not given. Show result on map • Cross bearing, Center point of two and three coordinates, different intersections of lines and circles, ... Science and Technology • Astronomy: Calculate position of sun and moon at a certain place and time • Color Space Converter: Convert color values between RGB, HSL, Hex, CMYK, ... • Countries: ISO, calling and vehicle registration codes, flags • Date and Time functions: Weekday, time differences, ... • Irrational Numbers: π, φ and e: Show and search up to > 1 Mio. digits • Number sequences: Factorial, Fibonacci and Co. • Numeral Systems: Converts decimal to binary, hexadecimal, ... • Periodic Table of the Elements: Interactive view; lists which order the elements by any criterion • Phone Keys: Converts classic phone keys to letters. Supports phone model specific behaviours • Prime Numbers: Search prime numbers up to 1 Mio. • Segment Display: Graphical interface for decoding and encoding 7 to 16 segment displays • Unit Converter: Length, Volume, Pressure, Power and many more; convert between common units incl. prefixes like micro and kilo • Apparent Temperature, Cross Sums, DTMF, Keyboard layouts, Projectiles, Resistor codes, ... Images and Files • Hex Viewer • Exif/Metadata Viewer • Analyse frames of Animated Images • Color corrections: Adjust contrast, saturation, edge detection, ... • Search for Hidden Data or hidden archives • Read QR/Barcodes from images, create them from binary input ## Key features - Formula Solver for multi-stage variables - Multi Decoder with various interpreters - Over 200 symbol table sets - High-precision coordinate algorithms - Support for multiple coordinate formats - Enigma simulator - Color space converter ## Frequently asked questions about GC Wizard ### What is GC Wizard? GC Wizard is an open-source tool collection originally created to support geocachers with in-field mysteries and riddles. It includes numerous tools for cryptography, geographic, and scientific calculations. ### Does GC Wizard have ads? No, GC Wizard is ad-free, allowing for an uninterrupted user experience. ### What kind of cryptographic tools does GC Wizard offer? GC Wizard includes tools for various classic, historic, military, and technical encodings, such as Morse, Vigenère, Enigma simulation, and hash breakers. ### Can GC Wizard handle coordinate calculations? Yes, GC Wizard offers high-precision coordinate algorithms supporting various formats like UTM, MGRS, and PlusCode, and can perform waypoint projections and interpolations. ### What scientific and technical tools are included in GC Wizard? The app features tools for astronomy, color space conversion, country codes, date and time functions, irrational numbers, and number sequences. ### Is GC Wizard available on multiple devices? GC Wizard is available for iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users. ### How frequently is GC Wizard updated? GC Wizard was last updated on January 2nd, 2026, indicating ongoing development and support for the application. ### What is the age rating for GC Wizard? GC Wizard has an age rating of 4+, making it suitable for a broad audience of users. ## Version history (last 5 releases) ### 3.7.0 — 2026-07-14 [new] Triangle Calculations [new] Coords: Ellipsoid Triangles [new] MIDI [new] Time Converter [new] Astronomy Times [new] Look and Say [new] Punycode [new] Zalgo Text [new] GeoJson import/ export [new] Grid: Draw Lines [new] Coords: Orthogonal Projection [new] Shuffle Texts [fix] Many bug fixes ### 3.6.0 — 2026-01-02 [new] Coord Format: Hebi63 [new] Gade derivates (Edag, Lowe, EWOL) [new] NVA Codes (Juno, Jupiter, Zebra) [new] RegEx [new] Wordoku [new] Game of life generator [new] Animated Gif generator [chg] Verbal Arithemtic output [fix] Many bug fixes ### 3.5.0 — 2025-08-26 [new] Echo [new] Subnetmask [new] Bingo [new] Cryptoanalysis/ Text Analysis [new] Many Symbol Tables [chg] Beghilos [fix] Many bug fixes ### 3.4.1 — 2025-07-13 Fixed map issue ### 3.4.0 — 2025-05-08 [new] Ballistics [new] Larrabee [new] Fakoo Segment Display [new] Many Symbol Tables [chg] Tupper [chg] Vanity Words [fix] Many bug fixes ## Apps similar to GC Wizard | App | Rating | Price | Category | | --- | --- | --- | --- | | [Satellite Tracker by Star Walk](https://appshunter.io/ios/app/satellite-tracker-by-star-walk/id1248172706) | 4.6 (69,221) | Free | Reference | | [Kiwix](https://appshunter.io/ios/app/kiwix/id997079563) | 4.2 (410) | Free | Reference | | [Wayback Machine](https://appshunter.io/ios/app/wayback-machine/id1201888313) | 2.2 (244) | Free | Reference | | [Knots 3D](https://appshunter.io/ios/app/knots-3d/id453571750) | 4.9 (12,175) | $5.99 | Reference | | [MapGenie: BG3 Map](https://appshunter.io/ios/app/mapgenie-bg3-map/id6466304443) | 4.8 (133) | Free | Reference | | [Colecione Tudo](https://appshunter.io/ios/app/colecione-tudo/id559036969) | 4.6 (13,335) | Free | Reference | ## More apps by Mark Lorenz - [GC Wizard Gold](https://appshunter.io/ios/app/gc-wizard-gold/id1510372318) All apps by Mark Lorenz: https://appshunter.io/developer/1506766125 --- *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 2026-07-21.*