Comparison

Spyglass vs Map Chart Mosaic

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

Map Chart Mosaic

Access detailed topographic, satellite, and weather forecast maps offline on your iPhone and smartwatch. Plan routes, record GPS tracks, and share your journey data. View maps without an internet connection.

Highlights
  • Offline topographic and satellite maps
  • GRIB weather forecast maps
  • Cycle and hiking trail maps
  • Smartwatch map support (Apple Watch, Fitbit, Garmin, Amazfit)
  • Add map markers and travel routes
  • Record GPS tracks and share as GPX
  • GPS travel information (speed, ETA)
Features
Currently charting
Read full description

Offline maps for iPhone, Apple Watch, Fitbit, Garmin or Amazfit smartwatch: topographic maps, satellite images, GRIB weather forecast maps and road maps with cycle and hiking trails. Nautical charts are currently only for USA and Canada available. Please watch the video and read the FAQ: http://www.MapChartMosaic.com/ Switch seamlessly between maps from different sources to get detailed information about a location. Map views are automatically stored in an offline cache on your phone, so that you can view them later without an internet connection. Download offline maps to Apple Watch or Fitbit smart watch and view them without connection to your phone. Add map markers and travel routes to the offline maps (e.g. your current car parking location). Create map travel routes. Record your GPS Track. Share map marker, route and track data as GPX files. Get GPS travel info: speed, course, odometer, route ETA (estimated time of arrival)... Get GRIB weather forecast maps via Internet download, Email or Iridium Go satellite connection. You can display the maps also on the Fitbit smart watch. But please don't expect the same maps app performance on the Fitbit as on a phone. The Fitbit is very slow and has very limited space. The Fitbit phone app "Sync" step, shown in the video, is very important. Don't skip it and make sure that the watch app Map Chart is closed during the Sync. DISCLAIMER Do NOT use the app for navigation or any other purpose that may result in personal injury or property damage. Use it at your own risk.

Screenshots

Spyglass4 screens
Map Chart Mosaic4 screens

Verdict

The call

The clearest difference is review sentiment: Spyglass at 80% against Map Chart Mosaic's 0%. Spyglass also leads on price (Free vs $3.99) and rating (4.7 vs 2.6). Map Chart Mosaic's advantage is in-app purchases (none vs 4) and ads (none vs shown). On update cadence, chart position 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

CostPrice · In-app purchases · Ads · Monetization

Spyglass is free to download; Map Chart Mosaic costs $3.99 up front. Spyglass sells 4 in-app purchases, starting at $3.99 per month. Map Chart Mosaic asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Spyglass holds the better App Store score, 4.7 against 2.6. That said, the two scores are not equally well evidenced: Spyglass has 3.9K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 80% of Spyglass's written reviews are positive against 0% of Map Chart Mosaic's.

UpkeepUpdate frequency

Spyglass ships an update every 6 weeks, Map Chart Mosaic every 5 weeks. Both last shipped on October 29, 2026.

Scorecard8 real differences · 3 level
Spyglass versus Map Chart Mosaic: the parameters behind the verdict, then further details
ParameterSpyglassMap Chart Mosaic
PriceFree — better$3.99
Rating4.7 (3.9K ratings) — better2.6 (5 ratings)
Positive reviews80.2% of reviews — better0.0% of reviews
Number of ratings3.9K — better5
Update frequencyEvery 6 weeksEvery 5 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#128#68 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS13.4 — better15.6
Further details — not scored
Size66 MB39 MB
Age rating4+4+
DeveloperPavel AhafonauAppMosaic.com

Customer experience

Spyglass

All ratings3,864 ratings
Positive94.8%
Neutral3.0%
Negative2.2%
Written reviews435 reviews
Positive80.2%
Neutral4.1%
Negative15.6%

Map Chart Mosaic

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Map Chart Mosaic

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

Map Chart Mosaic

No in-app purchases

Questions

Is Spyglass free?
Spyglass is free to download, with in-app purchases available.
Is Map Chart Mosaic free?
Map Chart Mosaic costs $3.99, with no in-app purchases.
Which has better reviews, Spyglass or Map Chart Mosaic?
Spyglass is rated higher. Spyglass averages 4.7 out of 5 from 3.9K ratings, while Map Chart Mosaic averages 2.6 from 5 ratings.
Do Spyglass or Map Chart Mosaic have ads?
Spyglass shows ads; Map Chart Mosaic does not.
Which is updated more often, Spyglass or Map Chart Mosaic?
Spyglass ships an update every 6 weeks, and Map Chart Mosaic every 5 weeks. Most recently, Spyglass was updated on October 29, 2026 and Map Chart Mosaic on October 29, 2026.
Which is more popular, Spyglass or Map Chart Mosaic?
Spyglass currently peaks at #128 in the App Store charts, and Map Chart Mosaic at #68. Chart position reflects recent download velocity rather than total install base.

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