Comparison

GSI Map++ vs Mapply for Open Street Map

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

Head to head
About

GSI Map++

This app displays maps from the Geospatial Information Authority of Japan, offering various map types and measurement tools. It allows integration with Apple Maps or Google Maps for directions and provides location details with memo and photo options.

Highlights
  • Display GSI maps
  • Integrate with Apple/Google Maps
  • Switch to OpenStreetMap
  • Measure distance and area
  • Display location and elevation
  • Add location bookmarks
  • Save tile data locally
Features
Read full description

This is an application to display maps provided by Geospatial Information Authority of Japan. Please view the following link if you want to know more about the GSI map. http://www.gsi.go.jp/kikakuchousei/kikakuchousei40182.html Features: 1, Can display almost all the map types published by Geospatial Information Authority of Japan. 2, Can invoke the directions function of Apple Map or Google Map in this application. 3, Can switch to OpenStreetMap for your convenience. 4, Can measure distance and area space, please select the corresponding function and tap the red pin to try. 5, Can display the location and elevation information on detail screen, also can add memo or select a photo(if photos are available on device). You can delete selected photo by long press action. 6, Can add a location point to bookmark on detail screen. 7, Background map option, changing map transparency. 8, Save history on trace mode. 9, Save tile data to local. Notice: 1, The internet environment is a must. 2, Sometimes the display of map become slowly, because of the status of internet environment. Disclaimer: 1, The developer take no responsibility for any result when user use this application. 2, The map displayed in this application depends on service provided by other organization, this application will out of work if this kind of service was stopped.

About

Mapply for Open Street Map

Explore detailed maps of the world, including transport networks, hiking trails, and topography. This app leverages OpenStreetMap and other specialized map layers for comprehensive navigation and outdoor adventure planning. Enjoy offline caching for uninterrupted exploration.

Highlights
  • OpenStreetMap integration
  • Specialized map layers (cycling, transport, sea, trails)
  • Topographical data
  • Railway information
  • Offline caching
  • Satellite views
Features
Read full description

Introducing Mapply, the ultimate map viewer for Open Street Map (OSM) and tile-based map layers. With Mapply, you're one tap away from exploring the world in detail, navigating transport networks, embarking on outdoor adventures, and discovering intricate topography - all tailored to your needs. Experience satellite views, hiking trails, topography, railway routes, seas, terrain analysis, and much more! Uncover the World of Open Street Map (OSM): With OpenStreetMap, a , of the world, rich in details about locations both near and distant. Navigate through an extensive network of roads, trails, and points of interest - all meticulously crowd-sourced by a global community of map enthusiasts. Find the right cycling path with CyclOSM: Beautifuly designed, yet highly functional map to guide you on the best cycling paths around the globe. Transport Network with Open Transport Map: Dive into the intricate infrastructure of transportation, encompassing airports, railway lines, stations, bus routes, and stops. Mapply's integration with OpenTransportMap is your indispensable resource for navigating the intricacies of modern transportation. Embark on Marine Journeys with Open Sea Map: OpenSeaMap opens the door to your nautical adventures, offering intricate details about harbors, buoys, and more. It's the perfect tool for sailors, explorers, and maritime enthusiasts to navigate with confidence. Unleash Outdoor Adventures with Waymarked Trails: Mapply brings the outdoor world to your fingertips, providing specialized maps for a myriad of activities such as hiking, cycling, mountain biking, and skiing. From easy-going cycling routes to challenging mountain biking trails, and from serene hiking paths to exhilarating ski slopes - all your outdoor adventures begin with Mapply. Discover Topography with Open Topo Map: Mapply leverages OpenTopoMap to provide users with precise topographical information. Understand the height profiles of specific areas, and plan your journeys with in-depth knowledge of the terrain. Unravel Railways with Open Railway Map: Mapply is a treasure trove for railway enthusiasts. OpenRailwayMap offers comprehensive data on global train tracks, and further layers reveal specifics about maximum speeds, signals, electrification, and track gauge. It's a comprehensive guide to the world's railways, all on your device. Enhanced User Experience with Offline Caching: Mapply ensures your adventures are uninterrupted with its offline caching feature. Once you've explored an area, Mapply caches it on your device. Mapply is built on open-source data for map data and overlay styles, displaying attributions in-app. We're always eager to enhance your Mapply experience and welcome suggestions for additional maps to be included in future updates. Start your journey with Mapply, and open up a world of exploration. Maps included: - OpenStreetMap: The collaborative project that offers a free, editable map of the world - CyclOSM: The go to open map for cycling paths and trails - OpenTransportMap: Your go-to resource for transportation details - OpenSeaMap: The ultimate marine cartography platform - Waymarked Trails - Hiking: Comprehensive hiking trail maps - Waymarked Trails - Cycling: Detailed cycling route maps - Waymarked Trails - Mountain Biking: Expert mountain biking trail maps - Waymarked Trails - Slopes: Extensive skiing slope maps - OpenTopoMap: Your source for detailed topographic maps - OpenRailwayMap - Standard: Comprehensive train track maps - OpenRailwayMap - Max Speed: Speed limit details for train tracks - OpenRailwayMap - Signals: Signal locations on train tracks - OpenRailwayMap - Electrification: Electrification data for train tracks - OpenRailwayMap - Track Gauge: Track gauge information for train tracks - NASA GIBS - CityLights - The earth by night with beautiful dark satellite imagery

Screenshots

GSI Map++4 screens
Mapply for Open Street Map4 screens

Verdict

The call

The clearest difference is in-app purchases: Mapply for Open Street Map at none against GSI Map++'s 2. Mapply for Open Street Map also leads on update cadence (weekly vs every 6 weeks). GSI Map++'s advantage is review sentiment (43% vs 14%). On price, ads, device support and iOS requirement 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. GSI Map++ sells 2 one-off in-app purchases. Mapply for Open Street Map asks for nothing beyond the download.

UpkeepUpdate frequency

GSI Map++ ships an update every 6 weeks, Mapply for Open Street Map weekly. The most recent releases landed on October 15, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
GSI Map++ versus Mapply for Open Street Map: the parameters behind the verdict, then further details
ParameterGSI Map++Mapply for Open Street Map
PriceFreeFree
Rating—4.1 (53 ratings) — better
Positive reviews42.9% of reviews — better14.3% of reviews
Number of ratings—53 — better
Update frequencyEvery 6 weeksWeekly — better
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size4 MB6 MB
Age rating4+12+
DeveloperAOBO Co.,LtdFlorian Chrometz

Customer experience

GSI Map++

Written reviews14 reviews
Positive42.9%
Neutral21.4%
Negative35.7%

Mapply for Open Street Map

All ratings51 ratings
Positive70.6%
Neutral9.8%
Negative19.6%
Written reviews14 reviews
Positive14.3%
Neutral7.1%
Negative78.6%

In-app purchases

2 purchases

GSI Map++

One-time2
  • 広告の削除(6ヶ月間)$2.99
  • 広告の削除(1年間)$3.99
None

Mapply for Open Street Map

No in-app purchases

Questions

Is GSI Map++ free?
GSI Map++ is free to download, with in-app purchases available.
Is Mapply for Open Street Map free?
Mapply for Open Street Map is free to download, with no in-app purchases.
Do GSI Map++ or Mapply for Open Street Map have ads?
Both GSI Map++ and Mapply for Open Street Map show ads.
Which is updated more often, GSI Map++ or Mapply for Open Street Map?
GSI Map++ ships an update every 6 weeks, and Mapply for Open Street Map weekly. Most recently, GSI Map++ was updated on October 15, 2026 and Mapply for Open Street Map on October 25, 2026.

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