GenMapCode vs Mappu
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GenMapCode
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GenMapCode: The Fastest Way to Navigate Japan Driving in Japan is an incredible experience, but navigating can be a unique hurdle. Most Japanese rental car GPS systems require a proprietary "MapCode" to set a destination. Typing English addresses or foreign characters into a car dashboard is notoriously difficult, and phone mounts are rarely provided. GenMapCode solves this instantly. We bridge the gap between modern smartphone research and legacy car hardware. No more manual searching or struggling with Japanese keyboards. Simply find your destination on your phone, share the link to GenMapCode, and get the exact 9-12 digit MapCode ready to punch into your car's navigation system. Why travelers rely on GenMapCode: • Skip the Copy & Paste: Use the iOS Share Sheet directly from Google Maps to send a location to GenMapCode for a truly seamless experience. • Instant Conversions: Your MapCode is generated in a flash, getting you on the road faster. • Navigate Anywhere: Hotels, hidden restaurants, scenic spots, or remote hiking trails—if it's on the map, we can pinpoint it with an accuracy of up to 3 square meters. • Zero Typing Required: Built-in clipboard detection instantly recognizes when you’ve copied a map link. • Bilingual Support: Fully localized for both English and Japanese users. Whether you're exploring the snowy roads of Hokkaido, the beaches of Okinawa, or the hidden gems of Kyoto, GenMapCode ensures your road trip is completely stress-free.
Mappu
Easily find Japan's proprietary location codes for any place, from landmarks to hidden gems. Simply tap on the map or search by name/address to get a Mapcode compatible with rental car GPS systems. Save your itinerary with iCloud sync and access previously looked-up codes offline.
- Tap any location for Mapcode
- Search by name, address, or coordinates
- Save and organize favorite locations
- iCloud sync across devices
- Offline access to saved Mapcodes
- Multiple map display modes
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Planning a road trip in Japan? Mappu gives you the Mapcode for any place in Japan with a single tap — the same compact code your rental car's GPS already understands. WHAT IS A MAPCODE? Mapcode is Japan's proprietary location code system, printed on restaurant flyers, sightseeing brochures, and accepted by virtually every car navigation system in Japan. Just type in the code (no street address needed) and your GPS knows exactly where to go. ONE TAP TO GET ANY MAPCODE • Tap any spot on the map — landmark, restaurant, hotel, hidden onsen — and Mappu instantly shows its Mapcode. • Search by name, address, coordinates, or Mapcode with autocomplete that understands Japanese, English, and Chinese. • Long-press anywhere to drop a pin and look up the Mapcode for that exact coordinate. GO STRAIGHT TO A MAPCODE OR COORDINATE • Already have a Mapcode from a flyer or a friend? Type it into the search box and Mappu drops a pin right at that spot and shows its address. • Enter a latitude and longitude (e.g. 35.6586, 139.7454) to jump straight to any coordinate in Japan and get its Mapcode. TAP ANY POI Curious about that interesting building? Tap the icon to see its name, phone number, and Mapcode — perfect for calling ahead or pasting straight into your car's GPS. SAVE YOUR ITINERARY WITH ICLOUD SYNC • Save the places you plan to visit to your Favorites before your trip. • Organize favorites into folders (e.g. "Day 1 — Tokyo", "Day 2 — Hakone"). • Everything syncs through iCloud, so your itinerary appears on every device you sign in to. DESIGNED FOR THE ROAD • Clean, distraction-free map view. • Light, dark, and satellite modes — readable in any lighting condition. • Works offline for Mapcodes you've already looked up. WHO IT'S FOR • Travelers renting a car in Japan who want to enter destinations into their GPS without typing long addresses. • Japan residents sharing business addresses or sightseeing places by Mapcode. PRIVACY Mappu doesn't sell your data. Your favorites stay in your private iCloud. Mappu is supported by ads — ad personalization is opt-in via the standard iOS permission. Note: Mapcodes are only meaningful for coordinates within Japan. SUBSCRIPTION & PURCHASES Mappu Pro is an auto-renewable subscription that unlocks Google Maps search and removes banner ads, offered as a monthly or yearly plan. Prices are shown in the app before you buy. Payment is charged to your Apple Account at confirmation of purchase, and the subscription renews automatically unless you cancel at least 24 hours before the end of the current period. You can manage or cancel it at any time in your Apple Account settings. A separate one-time "Remove Banner Ads" purchase removes the banner ad only; it does not include Google Maps search. Terms of Use (EULA): https://mappu.app/mappu_terms.html Privacy Policy: https://mappu.app/mappu_privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: GenMapCode at none against Mappu's 2. Mappu's advantage is update cadence (weekly vs every 2 months). 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
Both are free to download. Mappu sells 2 in-app purchases, starting at $9.99 per month. GenMapCode asks for nothing beyond the download.
GenMapCode ships an update every 2 months, Mappu weekly. The most recent releases landed on September 10, 2026 and September 17, 2026 respectively.
| Parameter | GenMapCode | Mappu |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | Yes | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.1 — better | 16.0 |
| Further details — not scored | ||
| Size | 42 MB | 36 MB |
| Age rating | 4+ | 12+ |
| Developer | Junlong Tan | Pegasus Coders LLC |
In-app purchases
GenMapCode
No in-app purchases
Mappu
- Mappu Pro - Monthly$9.991 Month
- Mappu Pro - Yearly$89.991 Year





