GNSS Log App vs Syrma
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GNSS Log App
This app provides a digital solution for surveyors and geodesists to document static GNSS observations. It offers comprehensive equipment management, direct integration with geodetic databases, and tools for field data collection, all while ensuring professional, publication-ready PDF output.
- Digital static GNSS observation logging
- Comprehensive equipment library management
- Direct NGS database integration
- OPUS solution import and integration
- Field tools: timers, weather, photos, visibility diagrams
- Publication-ready PDF export
- Privacy-focused, no account required
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GNSS Obs - Professional Observation Logs GNSS Obs is the professional solution for documenting static GNSS observations. Designed for surveyors, geodesists, and geospatial professionals, it eliminates transcription errors and ensures consistent, accurate project documentation. Replace Paper Logs with Digital Precision Stop relying on paper forms, fillable PDFs, and handwritten notes. GNSS Obs provides a structured workflow that promotes accuracy and completeness while maintaining the professional standards required for geodetic control projects. Comprehensive Equipment Management Build and maintain your equipment library with support for: • Fixed height, collapsible and adjustable tripods • Antenna extensions • Integrated antenna/receiver configurations • Complete metadata for NGS compliance Import and export library items to share standardized configurations across your organization. Direct NGS Database Integration Access public monument data directly from: • National Geodetic Survey Integrated Database (IDB) • OPUS Share Database • NOAA CO-OPS Stations Monuments can also be entered manually when working with local control networks. OPUS Solution Integration Import OPUS solution emails to automatically populate: • Observed positions • Actual observation times • Session statistics • Solution quality metrics Include the complete OPUS solution in your PDF output for comprehensive project records. Essential Field Tools • Session timers with local notifications • Automatic weather recording at session start and end • Photo documentation with NGS-compliant naming • Satellite visibility diagrams using device motion sensors • Real-time editing before, during, and after observations Professional Documentation Export publication-ready PDF observation logs featuring: • Your company logo and branding • Complete equipment configurations • Weather conditions • Site photographs • Visibility diagrams • OPUS solutions Share via Files, email, AirDrop, or messaging. Note: This app documents observations and does not communicate with GNSS receivers. It is designed as a field companion for recording session metadata and producing professional deliverables. Privacy First All data remains on your device. No account required. Full control over exports and backups. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Syrma
Effortlessly save, organize, and share your favorite locations with friends and family. Generate beautiful QR codes and shareable links for instant access, with optional cloud sync and multi-language support.
- Save unlimited addresses
- Add photos and notes to locations
- Organize with custom categories
- Generate QR codes for sharing
- Create shareable links
- One-tap navigation integration
- Optional cloud sync
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Share any location in seconds Syrma makes it effortless to save, organize, and share your favorite locations with friends, family, or colleagues. Whether you're sharing a hidden gem restaurant, a meeting spot, or your home address, Syrma does it all with beautiful QR codes and shareable links. Save & Organize Save unlimited addresses with custom names Add multiple photos to each location Write notes and instructions (gate codes, parking tips, etc.) Organize with categories: Home, Work, Restaurant, Gym, and more Mark favorites for quick access Search and filter your saved places Share With Anyone Generate beautiful QR codes for instant sharing Create shareable links that work on any device Share via text, email, WhatsApp, Telegram, and more Track how many people viewed your shared locations Links expire after 60 days for privacy Navigate Easily One-tap navigation with Google Maps Apple Maps integration Waze support for traffic-aware directions Copy coordinates or map links Beautiful & Private Dark and light mode support Your data stays on your device Optional cloud sync when signed in Multi-language support: English, Arabic, Spanish, French, Hindi, Japanese, Portuguese, Russian, Turkish, Urdu, Chinese, and Dutch Designed For Everyone Clean, modern interface Intuitive gestures and interactions Accessible and easy to use Fast and reliable Perfect for: Sharing meeting spots with colleagues Sending your address to delivery drivers Recommending restaurants and shops Saving parking spots and trailheads Keeping track of places you love Download Syrma today and never struggle to share a location again!
Screenshots
Verdict
The clearest difference is ratings volume: GNSS Log App at 16 against Syrma's 1. Syrma's advantage is update cadence (every 3 weeks vs every 2 months) and iOS requirement (16.6 vs 18.0). On price, rating, review sentiment and ads 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. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for GNSS Log App against 5.0 for Syrma. That said, the two scores are not equally well evidenced: GNSS Log App has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.
GNSS Log App ships an update every 2 months, Syrma every 3 weeks. Both last shipped on October 24, 2026.
| Parameter | GNSS Log App | Syrma |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (16 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 16 — better | 1 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 204 MB | 51 MB |
| Age rating | 4+ | 4+ |
| Developer | John May | Mohammed Alshaikh |
Customer experience
GNSS Log App
Syrma
In-app purchases
GNSS Log App
No in-app purchases
Syrma
No in-app purchases









