Comparison

Japan's 100 Great Castles vs 洞窟・鍾乳洞MAP

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

Head to head
About

Japan's 100 Great Castles

Features
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Record your journey across Japan's 100 Great Castles and aim to conquer them all! ----- Key Features ----- ■ Manage the 100 Great Castles & Next 100 Great Castles ■ Visit History ・View conquered castles in chronological order ・Look back on all the footprints of your journey ■ Interactive Map of Japan ・Visually check your progress by prefecture and region ・Tap to view the castle list for each area ・See your progress at a glance ■ Stamp Record Management ・Record the date and time of each visit ・Save notes for your visits ・Automatic completion-rate calculation ■ Progress Visualization ・View your overall completion rate in a graph ・Check progress by region ・Detailed achievement status by prefecture ■ Handy Search & Filter ・Quickly search by castle name ・Filter by visited / not visited ・Filter by region and prefecture ■ Data Backup & Restore ・Safely store your visit records with Google Drive ・Carry your records over seamlessly when you change devices ・Supports migration between iOS ↔ Android ■ Dark Theme Support ・An easy-on-the-eyes dark theme ・Optimized contrast across all screens ・Choose the theme you prefer ■ Latest News from the Japan Castle Foundation ・Pulled from the official RSS feed ----- About This App ----- "Japan's 100 Great Castles" is an unofficial app for managing your visit records to the 100 Great Castles of Japan and the Next 100 Great Castles, as selected by the Japan Castle Foundation. We've kept it simple, packing in only the features that castle-conquering challengers actually want.

About

洞窟・鍾乳洞MAP

Features
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「洞窟・鍾乳洞MAP」は、日本全国の鍾乳洞、海食洞、溶岩洞窟を簡単に探し、記録できる洞窟愛好家・旅行者のための専用アプリです。 家族連れで楽しめる観光スポットから、自然の神秘を感じる絶景、少しスリリングな地底探検まで、全国各地の魅力的な洞窟をマップとリストでサクサク検索できます。 鍾乳洞」「海食洞」「溶岩洞窟」といった種類別の検索はもちろん、「無料」「駐車場あり」の条件でも絞り込み可能。目的に合わせたスポット探しが捗ります。 【こんな方におすすめ】 ・旅行やドライブの行き先に、一味違うスポットを探している方 ・大自然の神秘や絶景、パワースポットが好きな方 ・ケイビング(洞窟探検)やアウトドアに興味がある方 ・全国の鍾乳洞を巡って記録をつけたい方 【安全上のご注意と免責事項】 洞窟や自然環境の探索には危険が伴う場合があります。安全に楽しむために、以下の点をお守りください。 ・掲載情報は正確ではない場合があります。お出かけ前に必ず各施設の公式サイトや現地の案内板をご確認ください。 ・立ち入りが制限されている場所、私有地、危険箇所への侵入は絶対におやめください。 ・天候の悪化や体調不良を感じた場合は無理をせず引き返してください。滑りやすい場所も多いため、歩きやすい靴と装備で足元には十分ご注意ください。 ・近隣への迷惑駐車やゴミの放置などはおやめください。 ・本アプリの利用により生じた事故、トラブル、損害等について、開発者は一切の責任を負いかねます。すべて自己責任でのご利用をお願いいたします。 位置情報を活用した「現在地からの距離表示」と「近い順ソート」の実装。

Screenshots

Japan's 100 Great Castles4 screens
洞窟・鍾乳洞MAP4 screens

Verdict

The call

The clearest difference is ads: Japan's 100 Great Castles at none against 洞窟・鍾乳洞MAP's shown. Japan's 100 Great Castles also leads on iOS requirement (15.0 vs 26.5). 洞窟・鍾乳洞MAP's advantage is update cadence (every 4 days vs every 11 days). 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

Japan's 100 Great Castles ships an update every 11 days, 洞窟・鍾乳洞MAP every 4 days. The most recent releases landed on November 4, 2026 and October 25, 2026 respectively.

Scorecard3 real differences · 3 level
Japan's 100 Great Castles versus 洞窟・鍾乳洞MAP: the parameters behind the verdict, then further details
ParameterJapan's 100 Great Castles洞窟・鍾乳洞MAP
PriceFreeFree
Update frequencyEvery 11 daysEvery 4 days — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.5
Further details — not scored
Size74 MB7 MB
Age rating4+17+
DeveloperTakuya TsukagoshiAdilkei Tsuchiya

In-app purchases

None

Japan's 100 Great Castles

No in-app purchases

None

洞窟・鍾乳洞MAP

No in-app purchases

Questions

Is Japan's 100 Great Castles free?
Japan's 100 Great Castles is free to download, with no in-app purchases.
Is 洞窟・鍾乳洞MAP free?
洞窟・鍾乳洞MAP is free to download, with no in-app purchases.
Do Japan's 100 Great Castles or 洞窟・鍾乳洞MAP have ads?
洞窟・鍾乳洞MAP shows ads; Japan's 100 Great Castles does not.
Which is updated more often, Japan's 100 Great Castles or 洞窟・鍾乳洞MAP?
Japan's 100 Great Castles ships an update every 11 days, and 洞窟・鍾乳洞MAP every 4 days. Most recently, Japan's 100 Great Castles was updated on November 4, 2026 and 洞窟・鍾乳洞MAP on October 25, 2026.

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