GCTools vs DeFlock.me
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.
DeFlock.me
This app provides a platform to view and contribute to a publicly accessible map of mass surveillance devices. Users can explore existing data and add new information about these devices.
- View ALPR data
- Contribute ALPR data
- Open map of surveillance devices
- Publicly accessible data
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View and contribute to an open map of public mass surveillance devices
Screenshots
Verdict
The clearest difference is review sentiment: DeFlock.me at 83% against GCTools's 40%. DeFlock.me also leads on rating (4.7 vs 3.1) and in-app purchases (none vs 7). GCTools's advantage is iOS requirement (9.2 vs 15.0). 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. DeFlock.me asks for nothing beyond the download.
DeFlock.me holds the better App Store score, 4.7 against 3.1. That said, the two scores are not equally well evidenced: DeFlock.me has 273 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 40% of GCTools's written reviews are positive against 83% of DeFlock.me's.
GCTools ships an update monthly, DeFlock.me fortnightly. The most recent releases landed on September 27, 2026 and September 28, 2026 respectively.
| Parameter | GCTools | DeFlock.me |
|---|---|---|
| Price | Free | Free |
| Rating | 3.1 (13 ratings) | 4.7 (273 ratings) — better |
| Positive reviews | 40.0% of reviews | 83.1% of reviews — better |
| Number of ratings | 13 | 273 — better |
| Update frequency | Monthly | Fortnightly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.2 — better | 15.0 |
| Further details — not scored | ||
| Size | 41 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Achim Heynen | Tech BS LLC |
Customer experience
GCTools
DeFlock.me
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
DeFlock.me
No in-app purchases









