OSM sketch vs OpenMaps
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OSM sketch
Draw directly on OpenStreetMap maps to create annotations and memos. Save your drawings as GPX files to upload and edit on desktop OSM editors. Ideal for planning routes or marking points of interest on the go.
- Draw on OSM maps
- Save drawings as GPX
- Upload to OSM account
- Multi-touch gestures
- Display current location
- Zoom and scroll map
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For OpenStreetMap(OSM) mapping, drawing your memo on paper printed the OSM map is good solution. You can describe on the paper anything e.g. Line, words, arrow, symbol and illustration. "OSM sketch" realize such paper mapping on iPhone. You can draw on OSM map anything you want to memo anywhere, anytime without printing beforehand. Operation is easy and optimized for small screen. Multi touch operation ,scroll and zoom, can be executed also during "drawing mode" so you can pull new canvas out quickly. To display current location and zoom in/out map support your mapping and these function are difficult for paper. The drawn line exchange into GPX file and upload to your OSM account page. You can open the GPX file by PC OSM editor(iD, Potlatch2 and JOSM) and edit OSM data based on your lines when you return your home.
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.
- Detailed topographic maps
- OpenStreetMap (OSM) data
- Live tile mapping
- Route planning
- Community-driven data
- Offline map access (implied by planning/navigation)
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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
Verdict
The clearest difference is review sentiment: OSM sketch at 100% against OpenMaps's 10%. OSM sketch also leads on rating (4.5 vs 3.9) and in-app purchases (none vs 2). OpenMaps's advantage is update cadence (every 2 months vs every 4 months) and ratings volume (16 vs 2). 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
Both are free to download. OpenMaps sells 2 in-app purchases, starting at $3.99 per month. OSM sketch asks for nothing beyond the download.
OSM sketch holds the better App Store score, 4.5 against 3.9. That said, the two scores are not equally well evidenced: OpenMaps has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of OSM sketch's written reviews are positive against 10% of OpenMaps's.
OSM sketch ships an update every 4 months, OpenMaps every 2 months. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.
| Parameter | OSM sketch | OpenMaps |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (2 ratings) — better | 3.9 (16 ratings) |
| Positive reviews | 100.0% of reviews — better | 9.7% of reviews |
| Number of ratings | 2 | 16 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad, Mac, Apple Watch — better |
| Requires iOS | 16.6 — better | 18.0 |
| Further details — not scored | ||
| Size | 8 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Masaki Fujimoto | Immaginet Srl |
Customer experience
OSM sketch
OpenMaps
In-app purchases
OSM sketch
No in-app purchases
OpenMaps
- OpenMaps Pro Monthly$3.991 Month
- Open Maps Pro Yearly Plan$22.991 Year








