# NOS Trailing — NOS Trailing > NOS Trailing (iPhone/iPad app by Pawel Krugiolka.) - Source: https://appshunter.io/ios/app/nos-trailing/id6775884805 (this page in markdown: same URL + `.md`) - Developer: [Pawel Krugiolka](https://appshunter.io/developer/6775884807) - Category: Sports, Lifestyle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.0 · 31 MB - Languages: American English, Polish - Released: 2026-06-21 - Data updated: 2026-08-26 - User reviews in markdown: https://appshunter.io/ios/app/nos-trailing/id6775884805/reviews.md ## What is NOS Trailing? NOS Trailing is a professional GPS app built specifically for mantrailing dogs and their handlers. Record trails, analyze results and develop your dog's skills – all in one place. GPS TRACKING Record handler and dog trails with accuracy down to 1 meter. The app automatically filters GPS errors and saves the full history of every trail. Start and finish markers, export to GPX format. MAPS View your trails on OpenStreetMap or Google Maps. TRAIL ANALYSIS Compare the dog's trail with the person's trail and assess the accuracy of the work. The perfect tool for tracking training progress. TRAINING JOURNAL Keep a complete history of your training. Rate trails (1–5 stars), add notes, track monthly statistics. Plan training sessions and invite others – even from outside your organization. ORGANIZATIONS Join a mantrailing group, share trails with members and manage shared training. Administrators can view all members and their dogs, and record trails with other members' dogs. WEATHER CONDITIONS Automatically record weather conditions during every training session – temperature, humidity, wind. SOS ALERT In an emergency, send an SOS to your emergency contacts with your live location. Safety first. DOG MANAGEMENT Add your dogs, choose an avatar, record exams and health events. Reminders for vaccinations and vet visits. PUSH NOTIFICATIONS Reminders about upcoming training and dog-related events – never forget an important date again. ADVENTURE MODE Real-time voice alerts when your dog strays off the trail. You focus on the dog, the app talks to you. An app made by mantrailing enthusiasts, for mantrailing enthusiasts. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly Premium | $1.99 | per month | | Yearly Premium | $14.99 | per year | ## Version history (last 5 releases) ### 3.0.0 — 2026-08-19 NEW: Trail pairing + Decoy trails! - Before you set off with your dog, mark the human trail you are going to search for! - Also mark the decoy trails that have been prepared for you - Once you're done you see everything on the map, and with a premium account you can run the trailing analysis right away! It takes only the trail layer's trail and the dog's into account, ignoring the decoy trails! - Following a human trail switches adventure mode on automatically! Fixes: - The app detects when "Precise Location" is off and lets you turn it on with a single tap! - Trails saved without internet appear in the list immediately, marked as waiting to upload ### 2.3.1 — 2026-08-06 Performance and stability improvements: • Smoother trail drawing on long trails — your phone heats up less and uses less battery. • Fixed distance rounding near full kilometres. • GPX files imported from other apps always keep their correct dates. ### 2.3.0 — 2026-07-30 • Map compass — a new feature showing which way you're facing. Choose a compass rose with cardinal directions or a small needle in Map options. Available to everyone. • Organisation fix — when your join request is accepted you get a notification and the organisation becomes active right away. ### 2.2.0 — 2026-07-23 • Push notifications: get notified about organization join requests, SOS emergency-contact requests, and training invitations. • A red dot in the menu highlights new activity. • Minor stability improvements. ### 2.1.0 — 2026-07-16 New in 2.1.0 — trail video recording! • Record video during trailing while watching the map at the same time. • Video with sound is saved to your phone's gallery (a "NOS Trailing" album). • Live camera preview on the map — adjust size and position in Options. • Minor fixes and improvements. --- *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 2026-08-26.*