Yunokuni is a specialized search utility for hot springs and saunas in Japan, allowing users to filter by specific amenities on iOS.
The App DNA
What makes this app unique?
The app removes the cognitive friction of searching for specific bath types in general maps, though the current lack of maintenance limits its utility.
For Travelers and local residents in Japan seeking specific hot spring or sauna amenities.
What does it look like?
Key features
Narrows search results by specific amenities including open-air baths, water baths, and shampoo availability.
Displays facility availability via color-coded map pins.
Synchronizes favorite facility lists for restoration across device changes.
How much does it cost?
Yunokuni operates as a free utility without explicit subscription or IAP gates.
Velocity
Dormant developmentopaqueShow more...
Yunokuni - HotSpring and Sauna has been inactive for 1,714 days. There have been no feature updates, bug fixes, or operational changes in over four years. The development momentum is non-existent, and the app appears to be in a state of abandonment.
Who built it?
Katsuhito Matsushima
2 apps tracked · Travel
IV Calculator for Pokemon GOUser Sentiment
What do users think recently?
How are ratings & reviews evolving?
Not enough recent reviews to extract reliable themes yet.
Read the full review analysisCompetition
Competitive landscape for Yunokuni - HotSpring and Sauna
How's the Travel market?
Yunokuni holds a 1-star rating across its total user base, with no updates in 1,715 days. This lack of momentum positions it as a legacy utility that has been superseded by general-purpose mapping services.
The rivals identified
The Analyst's Read
Key takeaways for Yunokuni - HotSpring and Sauna
Where is it heading?
The market for niche location utilities is consolidating around platforms that provide real-time data and frequent updates. Yunokuni's failure to maintain its data integrity means it will continue to lose relevance to general-purpose mapping services.
- The four-year update gap indicates the developer has abandoned the product, leading to inevitable data decay and user churn.
The SWOT
- Granular filtering for specific bath amenities
- Pivot to community-driven data verification
Next best moves
Sunset the application because the four-year maintenance gap renders the data utility unreliable → eliminate brand drag
The counter-intuitive read
The app's failure is not a lack of features…
Read the full takeSince the last report: The product has moved from a passive maintenance state to an active sunsetting recommendation, driven by a four-year development gap and a 1-star rating.
Bottom line
Yunokuni is effectively a sunset product, as the four-year development gap makes it impossible to compete with the real-time data accuracy of modern mapping platforms.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is Yunokuni still being updated?
How does Yunokuni compare to Google Maps for finding hot springs?
Is Yunokuni free to use?
What is a better alternative for finding saunas in Japan?
Sources
- [1] App Store, source
Report last updated