GCTools vs Zonar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GCTools
This app provides a comprehensive suite of tools for geocaching enthusiasts. It offers coordinate manipulation, a wide range of cipher decoding and encoding options, interactive data tables, and various unit converters to assist with multi and mystery caches.
- Coordinate projection and distance calculation
- Extensive cipher decoding and encoding
- Interactive data tables
- Multiple unit converters
- Mapview integration with popular services
- Coordinate saving and loading
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GCTools - the geocaching tool collection! Here you find the tools to get your next multi and mystery caches done easily. Coordinates: - Target guidance - Projection of coordinates - Distance between coordinates - Intersection of lines - Intersection of circles - Intersection of line/circle - Center of circle - Coordinate conversion (DMS, DM, D, Lat/Lon, UTM, MGRS, Swiss Grid, Quadtree) - Saving/loading coordinates (inApp) - Mapview - Interface to GoogleMaps, GoogleEarth, OpenMaps, OffMaps, Navigon, TomTom, Pocket Earth and Waze Ciphers De-/Encoding: - Affine Cipher - Alpha Cipher - Bacon Code - Baudot Code (CCITT-2) - Braille Alphabet - Caesar Cipher (ROT-N), ROT-5, -13, -18, -47 - Finger Alphabet - Flag Alphabet - Pigpen/Freemason's Cipher - Hexahue Code - Mobile Cipher - Morse Code - Puzzle-Code - Semaphore Alphabet - Shutter Telegraph - Tomtom Code - Vigenere Cipher/One Time Pad - Custom alphabets - Saving/loading alphabets (inApp) Interactive data tables: - Cross Sum - Latin/Arabic Numbers - Maya Numbers - Resistors - Periodic system - Color Alphabet - Prime Numbers - PI Digits - ASCII Code - Binary Code - German Police Codes Converters: - Coordinates - ASCII/Number Systems - Lengths - Areas - Volumes - Masses - Angles - Speeds - Times - Pressures - Temperatures - Angles - Number systems - Data sizes - Flashlight - Menu favorites and search If you find something missing let us know! If you encounter problems with the app please mail to gctools@onedollarapp.com instead of writing a review here. We cannot contact you that way to find a solution.
Zonar
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Zonar – Ihre Übersicht zu Waffenverbotszonen Mit Zonar, der offiziellen App des Verband Deutscher Büchsenmacher und Waffenfachhändler e.V., behalten Sie jederzeit den Überblick über alle registrierten Waffenverbotszonen in Deutschland. Hauptfunktionen: Interaktive Karte: Sehen Sie auf einen Blick, wo sich Waffenverbotszonen befinden. Geofencing & Push-Benachrichtigungen: Erhalten Sie automatisch eine Mitteilung, sobald Sie sich in einer Waffenverbotszone aufhalten oder diese betreten. Aktuelle Neuigkeiten: Informieren Sie sich über relevante Meldungen und Entwicklungen direkt in der App. Direkter Kontakt: Nehmen Sie unkompliziert Kontakt mit dem Verband auf. Warum Zonar? Zonar bietet eine verlässliche, leicht bedienbare Orientierungshilfe für alle, die im Alltag oder beruflich mit dem Thema Waffenrecht in Berührung kommen. So sind Sie stets informiert – sicher, transparent und aktuell.
Screenshots
Verdict
The clearest difference is in-app purchases: Zonar at none against GCTools's 7. Zonar also leads on update cadence (every 4 days vs monthly). GCTools's advantage is iOS requirement (9.2 vs 14.0). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. GCTools sells 7 one-off in-app purchases. Zonar asks for nothing beyond the download.
GCTools ships an update monthly, Zonar every 4 days. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.
| Parameter | GCTools | Zonar |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (13 ratings) — better | — |
| Positive reviews | 40.0% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Monthly | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 9.2 — better | 14.0 |
| Further details — not scored | ||
| Size | 41 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Achim Heynen | Verband Deutscher Büchsenmacher und Waffenfachhändler e. V. |
In-app purchases
GCTools
- Coordinate Storage$0.99
- Circle Tools$0.99
- Advanced Alphabets$0.99
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- Vigenere/One Time Pad Cipher$0.99
- Coordinate Types$0.99
- 1 Year Full Version$1.99
- Full Version$2.99
Zonar
No in-app purchases
