Simple Furigana is an iOS utility that adds hiragana or romaji ruby characters to Japanese text for language learners.
The App DNA
What makes this app unique?
It removes the connectivity dependency rivals require by processing text entirely offline, allowing for annotation in environments where network access is unavailable.
For Japanese language learners and researchers who require kanji annotation for reading comprehension.
What does it look like?
Key features
Automatically adds hiragana or romaji ruby characters to Japanese kanji text.
Adds furigana to selected text within Safari and other third-party applications.
Performs text annotation without requiring a network connection.
How much does it cost?
The app operates as a free utility with no IAP or subscription gates, serving as a brand-building tool.
Velocity
Dormant developmentopaqueShow more...
Simple Furigana has been inactive for 342 days, falling well outside the threshold for active development. With only one version recorded in the analyzed window and no updates for nearly a year, the app is currently in a zombie state. There is no evidence of ongoing feature development or maintenance cycles.
Who built it?
telethon k.k.
6 apps tracked · Utilities
Kanji Lookup Pro
Kanji Lookup
XLII
MyGels
Let's Write Kanji!User 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 Simple Furigana
How's the Utilities market?
Simple Furigana occupies a niche utility space with a 4.48-star rating across 270 lifetime reviews. Its lack of monetization and 342-day update gap suggests a static position rather than an active attempt to capture market share.
Read the market outlookThe rivals identified
Unlock the deeper market read.
Access the full report for freeThe Analyst's Read
Key takeaways for Simple Furigana
Where is it heading?
The Japanese language utility market is shifting toward AI-driven, context-aware translation tools that offer more than simple ruby character annotation. Simple Furigana remains a stable, offline-only option, but its lack of active development leaves it exposed to technical obsolescence as iOS evolves.
- The 342-day update gap confirms a maintenance-only posture, meaning no new features will arrive to counter modern browser-based rivals.
- Reliance on iOS app extensions without regular updates creates a high risk of sudden functionality loss during future OS version shifts.
The SWOT
- Offline-first architecture removes the connectivity dependency rivals require
- App extension integration allows annotation within Safari and third-party apps
- Localized pricing or a Pro tier could capture value from the research segment
Next best moves
Audit extension compatibility because the 342-day release gap risks breakage on future iOS versions → maintain existing user base
The counter-intuitive read
The app's lack of monetization is not a…
Read the full takeSince the last report: The app remains in a maintenance-only state with no functional changes, though the outlook now explicitly links the lack of updates to an inability to compete with browser-based alternatives.
Bottom line
Simple Furigana maintains a stable, offline utility for a niche audience, but the lack of updates suggests it is a legacy project. Maintaining the extension's compatibility is the only move that prevents total churn.
Unlock 2 critical frictions, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Does Simple Furigana require an internet connection?
Can I use Simple Furigana inside Safari?
Is Simple Furigana free to use?
Sources
Report last updated