Comparison

ダムナビ 日本全国ダム要覧 vs Manhole Card Map

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

Head to head
About

ダムナビ 日本全国ダム要覧

Discover approximately 3,000 dams across Japan with detailed information on their water systems, rivers, types, and capacities. Features include sorting, map display, and navigation to nearby dams, perfect for road trips and sightseeing.

Highlights
  • Detailed dam information
  • Sortable dam data
  • Map display of all dams
  • Search for nearby dams
  • Navigation to dams
  • Dam card distribution info
Features
Read full description

ダムを見に行こう! 「ダムナビ」は、日本全国にある約3000カ所のダムについて、水系、河川名、方式、目的、大きさ、総貯水量、事業者、竣工年等のデータを網羅したアプリです。県別、方式別、貯水量順などのソート機能を備える他、全てのダムの位置情報を収録し、マップ表示が可能です。現在地近くのダムを検索・表示する機能も備えています。ドライブ旅行、ツーリング旅行に対応した経路ナビ機能とも連携しており、気軽にダムを訪問・見学することができます。また、話題の国土交通省発行「ダムカード」の配布情報を収録しています。 ※ダムカード情報は2016年10月1日現在の国交省のデータに基づいています。 デンソーのアプリNaviConを利用してカーナビに地点を送信できます。

About

Manhole Card Map

Features
Read full description

Manhole Card Map helps you find distribution locations for Manhole Cards across Japan and keep track of the cards you have collected. MAIN FEATURES ■ Find distribution locations on the map View distribution locations near your current position or travel destination. Pin colors make it easy to distinguish cards you have not collected, cards already collected, locations that are out of stock, and cards not yet available. ■ Manage your collection Mark a card as collected with a single tap. You can also view card images, detailed information, and related websites. ■ Filter to plan your visits Filter cards by region, series, collection status, and availability on weekdays, weekends, or public holidays. ■ Update distribution location data Download updated distribution location data directly in the app. ■ Back up and transfer your data Export your collection status to a file and import it on another device. This is useful for backups and when moving to a new device. RECOMMENDED FOR • Manhole Card collectors • Travelers looking for nearby distribution locations in Japan • Anyone who wants a simple way to track collected and uncollected cards • People planning an efficient card-collecting trip Make Manhole Card Map your companion for collecting cards throughout Japan.

Screenshots

ダムナビ 日本全国ダム要覧4 screens
Manhole Card Map4 screens

Verdict

The call

The clearest difference is ads: ダムナビ 日本全国ダム要覧 at none against Manhole Card Map's shown. ダムナビ 日本全国ダム要覧 also leads on iOS requirement (8.0 vs 17.0). Manhole Card Map's advantage is update cadence (weekly vs every 23 months). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ダムナビ 日本全国ダム要覧 ships an update every 23 months, Manhole Card Map weekly. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 5 level
ダムナビ 日本全国ダム要覧 versus Manhole Card Map: the parameters behind the verdict, then further details
Parameterダムナビ 日本全国ダム要覧Manhole Card Map
PriceFreeFree
Positive reviews62.5% of reviews—
Update frequencyEvery 23 monthsWeekly — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS8.0 — better17.0
Further details — not scored
Size36 MB141 MB
Age rating4+4+
DeveloperMejiro PublicationsTETSUNOSUKE HIDA

In-app purchases

None

ダムナビ 日本全国ダム要覧

No in-app purchases

None

Manhole Card Map

No in-app purchases

Questions

Is ダムナビ 日本全国ダム要覧 free?
ダムナビ 日本全国ダム要覧 is free to download, with no in-app purchases.
Is Manhole Card Map free?
Manhole Card Map is free to download, with no in-app purchases.
Do ダムナビ 日本全国ダム要覧 or Manhole Card Map have ads?
Manhole Card Map shows ads; ダムナビ 日本全国ダム要覧 does not.
Which is updated more often, ダムナビ 日本全国ダム要覧 or Manhole Card Map?
ダムナビ 日本全国ダム要覧 ships an update every 23 months, and Manhole Card Map weekly. Most recently, ダムナビ 日本全国ダム要覧 was updated on November 1, 2026 and Manhole Card Map on October 31, 2026.

Other comparisons