Comparison

GSI Map++ vs OpenMaps

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

OpenMaps

Access detailed, open-source topographic maps for all your outdoor adventures. Plan hikes, discover trails, and navigate with confidence using community-driven data from OpenStreetMap.

Highlights
  • Detailed topographic maps
  • OpenStreetMap (OSM) data
  • Live tile mapping
  • Route planning
  • Community-driven data
  • Offline map access (implied by planning/navigation)
Features
Read full description

OpenMaps turns your iPhone, Apple Watch and Mac into a complete outdoor and marine navigation kit — powered by free, community-sourced OpenStreetMap data. OUTDOOR & MARINE IN ONE APP Switch between an Outdoor profile (hiking, trekking, mountain biking, trail running) and a Marine profile with OpenSeaMap nautical overlays — buoys, lighthouses, depths and harbours. One app for the trail and the water. WORKS WHERE THERE'S NO SIGNAL Topographic tiles are cached on device and can be pre-downloaded, so your map keeps working deep in the mountains or offshore where there's no connection. EVERYTHING YOU NEED OUTDOORS • 6 open-source topographic & nautical map styles • Draw routes tap-by-tap with live distance & elevation • Turn-by-turn directions with haptic guidance • Import and export Garmin FIT files, plus GPX • Find nearby POIs: refuges, water, peaks, marinas, fuel and more • Built-in tools: compass, altimeter, sunrise/sunset, coordinates • Live weather, wind and conditions for your location ON YOUR WRIST & ON YOUR DESK • Apple Watch app: record workouts with HealthKit, standalone map, Digital Crown zoom, Always-On mode and on-wrist route navigation • Watch complications & widgets: altimeter, nearest POI, live workout, weather • Mac app: menu bar access, Spotlight search and Quick Look map previews OPENMAPS PRO Remove all ads and support development. One subscription covers iPhone, Apple Watch and Mac. • Monthly — €1.99 / month • Yearly — €9.99 / year Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Payment is charged to your Apple ID on confirmation. Manage or cancel anytime in iOS Settings → Apple ID → Subscriptions. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://privacypolicyhub.vercel.app/openmaps/en

Screenshots

GSI Map++4 screens
OpenMaps4 screens

Verdict

The call

The clearest difference is review sentiment: GSI Map++ at 43% against OpenMaps's 10%. GSI Map++ also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, ads and in-app purchases 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 and OpenMaps sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

GSI Map++ ships an update every 6 weeks, OpenMaps every 2 months. The most recent releases landed on September 11, 2026 and September 22, 2026 respectively.

Scorecard2 real differences · 8 level
GSI Map++ versus OpenMaps: the parameters behind the verdict, then further details
ParameterGSI Map++OpenMaps
PriceFreeFree
Rating—3.9 (16 ratings) — better
Positive reviews42.9% of reviews — better9.7% of reviews
Number of ratings—16 — better
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, Mac, Apple Watch — better
Requires iOS15.0 — better18.0
Further details — not scored
Size4 MB21 MB
Age rating4++4
DeveloperAOBO Co.,LtdImmaginet Srl

Customer experience

GSI Map++

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

OpenMaps

All ratings16 ratings
Positive75.0%
Neutral0.0%
Negative25.0%
Written reviews62 reviews
Positive9.7%
Neutral9.7%
Negative80.6%

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
2 purchases

OpenMaps

Subscriptions2
  • OpenMaps Pro Monthly$1.991 Month
  • Open Maps Pro Yearly Plan$8.991 Year

Questions

Is GSI Map++ free?
GSI Map++ is free to download, with in-app purchases available.
Is OpenMaps free?
OpenMaps is free to download, with in-app purchases available.
Do GSI Map++ or OpenMaps have ads?
Both GSI Map++ and OpenMaps show ads.
Which is updated more often, GSI Map++ or OpenMaps?
GSI Map++ ships an update every 6 weeks, and OpenMaps every 2 months. Most recently, GSI Map++ was updated on September 11, 2026 and OpenMaps on September 22, 2026.

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