VR郡山城 vs OshiroCho ~Castle Diary~
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VR郡山城
Experience a VR recreation of Koriyama Castle during Toyotomi Hidenaga's era. Explore the castle grounds in VR by walking around the ruins, or choose specific viewpoints to see the reconstructed castle from different locations.
- VR experience of Koriyama Castle
- Real-time CG overlay on castle ruins
- 360-degree panorama from the keep
- Choose specific viewpoints for VR
- Explore castle from anywhere
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「VR郡山城」は、豊臣秀長在城時期の郡山城をCGで再現し、スマートフォンを使って当時の様子をVR体験できるアプリです。 ○ スマートフォンアプリを使ってVRを体験しよう! <郡山城跡周辺では> スマートフォンを持って郡山城跡周辺を歩くと、その動きに合せて郡山城の再現CGが表われます。まわりの風景にスマートフォンを向けると、カメラで当時の城内の様子を映し出しているようなVR体験を楽しむことができます。城跡内を歩くとそれに合せてCGの位置もリアルタイムに移動し、上下左右にスマートフォンの向きを変えると、その方向に見えていた当時の風景が映し出されます。天守台周辺では、当時の天守に昇った位置からの360度パノラマを体験することができます。郡山城跡に足を運んで、郡山城再現CGを体験してみましょう! <郡山城跡にいないときは> 郡山城跡にいないときでも、郡山城再現CGを利用したVR体験を楽しむことができます。天守周辺、極楽橋、鉄門の3箇所から好みのスポットを選ぶと、その地点からの風景がCGで再現されます。カメラの向きを変えると、当時のその場所からの風景をCGで楽しむことができます。
OshiroCho ~Castle Diary~
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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
Screenshots
Verdict
The clearest difference is update cadence: VR郡山城 at every 5 days against OshiroCho ~Castle Diary~'s monthly. VR郡山城 also leads on iOS requirement (15.0 vs 17.0). On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
VR郡山城 ships an update every 5 days, OshiroCho ~Castle Diary~ monthly. The most recent releases landed on October 16, 2026 and October 19, 2026 respectively.
| Parameter | VR郡山城 | OshiroCho ~Castle Diary~ |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 5 days — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 132 MB | 96 MB |
| Age rating | 4+ | 4+ |
| Developer | UC Technology Corporation | takeru urushihara |
In-app purchases
VR郡山城
No in-app purchases
OshiroCho ~Castle Diary~
No in-app purchases
Questions
Is VR郡山城 free?
Is OshiroCho ~Castle Diary~ free?
Do VR郡山城 or OshiroCho ~Castle Diary~ have ads?
Which is updated more often, VR郡山城 or OshiroCho ~Castle Diary~?
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