MapTap vs OSM sketch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MapTap
Explore diverse map layers including satellite, topographic, nautical charts, and street views. Compare multiple map sources side-by-side for comprehensive geographic information.
- Multiple map layer comparisons
- Satellite and hybrid views
- USGS topographic maps
- NOAA nautical charts
- OpenStreetMap integration
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Digital map browser. Compare standard Apple Maps view, Apple Satellite/Hybrid views, USGS topographic maps and orthophotos, NOAA raster nautical charts, and Open Street Map views.
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.
Screenshots
Verdict
The clearest difference is review sentiment: OSM sketch at 100% against MapTap's 23%. OSM sketch also leads on price (Free vs $1.99) and rating (4.5 vs 3.7). MapTap's advantage is ads (none vs shown) and chart position (#70 vs unranked). On ratings volume, update cadence, in-app purchases 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
OSM sketch is free to download; MapTap costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
OSM sketch holds the better App Store score, 4.5 against 3.7. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews point the same way: 23% of MapTap's written reviews are positive against 100% of OSM sketch's.
MapTap ships an update every 6 months, OSM sketch every 4 months. The most recent releases landed on October 29, 2026 and October 7, 2026 respectively.
| Parameter | MapTap | OSM sketch |
|---|---|---|
| Price | $1.99 | Free — better |
| Rating | 3.7 (3 ratings) | 4.5 (2 ratings) — better |
| Positive reviews | 23.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 3 — better | 2 |
| Update frequency | Every 6 months | Every 4 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Best chart rank | #70 — better | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 3 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Mobile Geographics | Masaki Fujimoto |
Customer experience
MapTap
OSM sketch
In-app purchases
MapTap
No in-app purchases
OSM sketch
No in-app purchases
