Comparison

Spyglass vs 4Riders

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Spyglass

This app is a comprehensive offline navigation tool for outdoor and off-road adventures. It combines a high-tech compass, GPS receiver, and augmented reality display with numerous tools for tracking, measuring, and celestial observation.

Highlights
  • Offline GPS and maps
  • Augmented reality display
  • Advanced compass and gyrocompass
  • Waypoint tracking and navigation
  • Sun, Moon, and star finder
  • Optical rangefinder
  • Camera with GPS data overlay
Features
Read full description

Spyglass is an essential offline GPS app for outdoors and off-road navigation. Packed with tools it serves as binoculars, heads-up display, hi-tech compass with offline maps, gyrocompass, GPS receiver, waypoint tracker, speedometer, altimeter, Sun, Moon and star finder, gyro horizon, rangefinder, coordinate converter, sextant, inclinometer, angular calculator and camera. It saves your custom places and waypoints, navigates precisely to them later, shows them on maps and using real-time augmented reality displays detailed GPS info, measures distances, sizes, angles, and does a lot more. COMPASS & GYROCOMPASS Accuracy improvement techniques, special compass modes and calibration methods available in Spyglass only make it a real instrument – the most advanced and accurate digital compass. FINDER, TRACKER & AR NAVIGATION Spyglass operates in 3D and uses augmented reality to show real-time object positions, info and directions to them overlaid over camera or maps. Save current position, add points from maps, manually enter location coordinates and bearings, add stars by hand or use a built-in star catalogue. Find saved places and objects later simply by following directional arrows. Spyglass tracks multiple targets simultaneously and shows their info – distance, direction, azimuth, elevation and estimated time of arrival. Copy, paste and share locations, coordinates and map links using many supported formats. GPS, SPEEDOMETER & ALTIMETER Find and track your location and get detailed real-time GPS data – coordinates in dozens of formats, altitude, course, current, maximum and vertical speed, using imperial, metric, nautical and surveying units. OFFLINE MAPS See your and targets’ positions on maps using different map styles and alternative map providers – plan waypoints and measure distances. Offline maps optimized for retina displays are available for download. TRACK STARS, SUN AND MOON & NAVIGATE BY STARS Track positions of stars, Sun and Moon with arc second precision – use them as a reference to calibrate compass for maximum accuracy. OPTICAL RANGEFINDER Measure distances to objects in real time with a rangefinder reticle similar to sniper sights. SEXTANT, ANGULAR CALCULATOR AND INCLINOMETER Find out heights of objects and distances to them – measure visually and calculate dimensions and distances. CAMERA Take pictures overlaid with all available GPS, positional and directional data. DEMO & HELP Videos: http://j.mp/spyglass_vids Manuals: http://j.mp/spyglass_help If you need specific map sources for hiking, cycling, skiing and many more outdoor activities, feel free to enjoy Spyglass PLUS. At confirmation of the Spyglass PLUS purchase, payment will be charged to your iTunes account, and it will be charged for renewal within 24-hours before the end of the current period. Automatic renewal can be turned off at any time in your Account Settings after purchase. After the cancellation of the renewal, Spyglass Plus will expire at the end of the current period. If you have any questions or comments, feel free to contact us at https://spyglassnav.com Privacy Policy: https://www.unblip.com/tmp/privacy_and_terms/privacy.html Terms of Use: https://www.unblip.com/tmp/privacy_and_terms/terms.html

About

4Riders

Features
Read full description

4Riders puts everything about your bike in one app: record rides, plan routes, ride with your crew and keep your bike serviced. Free, with no paywalls. RECORD EVERY RIDE • GPS tracking with map, photos, video and stats for every trip • Works without signal and syncs when you're back online • Download map areas to ride offline PLAN • Route planner: fastest or curviest, with stops and fuel stations • Discover real routes from other riders and copy them RIDE WITH PEACE OF MIND • Safety Link: share your live location with family or friends • Explora: riders and points of interest near you • Nearby services: fuel, workshops and more • Rally-style roadbook with tulips and CAP YOUR CREW • Post-its: the community feed of rides and photos • Communities with chat, routes and events • Messages with riders and with the 4Riders AI assistant • Group intercom to talk while you ride MISSIONS • Challenges with kilometers, badges and a country leaderboard MY GARAGE AND MARKETPLACE • Your bikes, mileage, upcoming services and expense log • Buy and sell bikes, gear and services Available in English, Spanish, Portuguese, French, Italian and German. Ideas or bugs? Write to app@4riders.com

Screenshots

Spyglass4 screens
4Riders4 screens

Verdict

The call

The clearest difference is in-app purchases: 4Riders at none against Spyglass's 4. 4Riders also leads on update cadence (weekly vs every 6 weeks). Spyglass's advantage is chart position (#150 vs unranked) and device support (3 vs 1). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Spyglass sells 4 in-app purchases, starting at $3.99 per month. 4Riders asks for nothing beyond the download.

UpkeepUpdate frequency

Spyglass ships an update every 6 weeks, 4Riders weekly. The most recent releases landed on November 6, 2026 and November 9, 2026 respectively.

Scorecard5 real differences · 6 level
Spyglass versus 4Riders: the parameters behind the verdict, then further details
ParameterSpyglass4Riders
PriceFreeFree
Rating4.7 (3.9K ratings) — better—
Positive reviews80.2% of reviews—
Number of ratings3.9K — better—
Update frequencyEvery 6 weeksWeekly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank#150 — better—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.4 — better16.0
Further details — not scored
Size66 MB126 MB
Age rating4+12+
DeveloperPavel AhafonauJet Raccoon

Bugs and requests

Spyglass

Reported bugs

3 issues
  • Compass not always accurate or consistent
  • Freezing or unresponsive issues after updates
  • Difficulty syncing waypoints and locations

Requested features

5 requests
  • Improved waypoint and location management
  • Larger text and UI elements for better readability
  • Integration with popular mapping and navigation apps
  • Offline elevation data and terrain analysis
  • Apple Watch companion app for on-the-go use

4Riders

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Spyglass

Subscriptions3
  • Spyglass Plus$3.991 Month
  • Spyglass Plus (Month)3 Days trial$3.991 Month
  • Spyglass Plus (Year)7 Days trial$29.991 Year
One-time1
  • Spyglass Pro (Lifetime)$39.99
None

4Riders

No in-app purchases

Questions

Is Spyglass free?
Spyglass is free to download, with in-app purchases available.
Is 4Riders free?
4Riders is free to download, with no in-app purchases.
Do Spyglass or 4Riders have ads?
Both Spyglass and 4Riders show ads.
Which is updated more often, Spyglass or 4Riders?
Spyglass ships an update every 6 weeks, and 4Riders weekly. Most recently, Spyglass was updated on November 6, 2026 and 4Riders on November 9, 2026.

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