Comparison

OshiroCho ~Castle Diary~ 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

OshiroCho ~Castle Diary~

Features
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"Where did I go again? When was that?" "My castle photos are buried in Camera Roll." "I started collecting 100 Famous Castle stamps but I have no idea how far I've come." OshiroCho is your castle-hopping companion that takes care of all of this. The digital evolution of the Japanese goshuin-style castle stampbook (御城印帳). > Pick the castle. We do the rest. Choose the castle you visited, and the visit date, weather, temperature, season, and day of week show up filled in. All you add is a photo or two and maybe a short note. You stop feeling like you are "traveling in order to log it" and start actually looking back at memories. > Keep your castle seals together Whether you have been collecting castle seals for years or are just starting, you can save multiple seal photos per visit. Keep regular photos and castle seals organized separately, and move photos between them later. Browse all the seals you have collected on a single screen and let "this one was the limited cherry blossom edition" bring back the trip. > All 200 official castles, ready from day one Japan's 100 Famous Castles + Continuing 100 Famous Castles, all 200 of them, are included from the start. Read about each castle's founding year, lord, surviving structures, and cultural property designations. The official castle numbers are shown too, so this works as a partner to your paper stamp book. > Level up every time you visit The more you visit, the higher you climb: Apprentice Warrior, Pilgrim, Lord, Shogun. Earn badges like "12 Original Keeps Conquered", "Prefecture Complete", and "100 Famous Castles 50%". Hints like "X more to conquer" turn into seeds for your next trip. > See every castle on the map See where you have been and where you have not, all on one map. Search by name or area, narrow down to "12 Original Keeps only", or sort by closest first. > Check official information before you go For castles with available links, open official pages for hours and access, 100 Famous Castles stamps, and castle seals from the castle details. Check changing hours, closures, and availability before your trip. > Works even out of signal All 200 castles' data lives inside the app. In a tunnel, on a mountain ruin, the search and the logging just keep going. Weather and similar info are fetched quietly in the background when you are online. > Switch phones without worry Records sync through iCloud. Pick up your new iPhone and your castle history is right there. > Privacy first Photos and notes stay on your iPhone. The only things that leave the device for weather lookup are the date and a rounded castle location (about 1 km precision), never your current location or anything that identifies you. For people who: - Stop by castles a few times a year and can't remember when - Just started the 100 Famous Castles stamp rally - Have a growing pile of castle seals to organize - Spend forever digging castle photos out of Camera Roll - Want castle hopping to be a little more fun "All your castle visits, logged for you" - start your castle journey with OshiroCho today. Terms of Service: https://oshirocho.turushihara.work/terms Privacy Policy: https://oshirocho.turushihara.work/privacy

About

洞窟・鍾乳洞MAP

Features
Read full description

「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

OshiroCho ~Castle Diary~4 screens
洞窟・鍾乳洞MAP4 screens

Verdict

The call

The clearest difference is ads: OshiroCho ~Castle Diary~ at none against 洞窟・鍾乳洞MAP's shown. OshiroCho ~Castle Diary~ also leads on iOS requirement (17.0 vs 26.5). 洞窟・鍾乳洞MAP's advantage is update cadence (every 4 days vs fortnightly). 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

OshiroCho ~Castle Diary~ ships an update fortnightly, 洞窟・鍾乳洞MAP every 4 days. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 3 level
OshiroCho ~Castle Diary~ versus 洞窟・鍾乳洞MAP: the parameters behind the verdict, then further details
ParameterOshiroCho ~Castle Diary~洞窟・鍾乳洞MAP
PriceFreeFree
Update frequencyFortnightlyEvery 4 days — better
AdsNo — betterYes
In-app purchasesNoNo
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.5
Further details — not scored
Size96 MB7 MB
Age rating4+17+
Developertakeru urushiharaAdilkei Tsuchiya

In-app purchases

None

OshiroCho ~Castle Diary~

No in-app purchases

None

洞窟・鍾乳洞MAP

No in-app purchases

Questions

Is OshiroCho ~Castle Diary~ free?
OshiroCho ~Castle Diary~ 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 OshiroCho ~Castle Diary~ or 洞窟・鍾乳洞MAP have ads?
洞窟・鍾乳洞MAP shows ads; OshiroCho ~Castle Diary~ does not.
Which is updated more often, OshiroCho ~Castle Diary~ or 洞窟・鍾乳洞MAP?
OshiroCho ~Castle Diary~ ships an update fortnightly, and 洞窟・鍾乳洞MAP every 4 days. Most recently, OshiroCho ~Castle Diary~ was updated on October 2, 2026 and 洞窟・鍾乳洞MAP on October 1, 2026.

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