Bolt Length - (Nominal Length)
Bolt Length - (Nominal Length) is a specialized mechanical design utility for Japanese engineers, providing JIS-compliant metric coarse screw length calculations on iOS.
The App DNA
What makes this app unique?
The app removes the cognitive friction of manual JIS table lookups for mechanical designers, providing a reliable, standardized reference tool.
For Mechanical designers and engineers in Japan requiring quick reference for JIS-standard screw lengths.
What does it look like?
Key features
Calculates metric coarse screw lengths based on Japanese Industrial Standards for mechanical design.
Limits calculations to standard metric coarse screw specifications.
How much does it cost?
The app is free to use and monetizes through ad inventory, as evidenced by the recent ad SDK update.
Velocity
Dormant developmentopaqueShow more...
The app has reached a zombie state, with no updates released in the last 1021 days. Development activity has effectively ceased, as the last recorded version was a minor update to the startup process and advertising SDKs. There is no evidence of ongoing maintenance or feature development.
Who built it?
mitsunori oishi
4 apps tracked · Productivity
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語呂合わせ電卓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 Bolt Length - (Nominal Length)
How's the Productivity market?
Bolt Length - (Nominal Length) occupies a hyper-niche position in the Japanese Productivity category, serving as a static reference tool for mechanical engineering. The lack of updates for over 1,000 days signals a maintenance-only posture rather than active market competition.
Read the market outlookThe rivals identified
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Access the full report for freeThe Analyst's Read
Key takeaways for Bolt Length - (Nominal Length)
Where is it heading?
The market for specialized JIS-standard reference tools remains stable but niche, with little demand for frequent feature iteration. Bolt Length - (Nominal Length) is well-positioned to continue serving this segment as a low-overhead utility, provided it remains compatible with current iOS versions.
- The 34-month development gap indicates the app is in maintenance mode, which limits growth but minimizes ongoing operational costs.
- Reliance on ad-based monetization without feature updates suggests the app functions as a low-maintenance, passive revenue asset.
The SWOT
- JIS-standard compliance establishes category authority for Japanese mechanical engineering workflows
- Localized expansion into broader JIS-compliant hardware categories could capture users currently relying on manual lookup tables
Next best moves
Audit ad SDK compatibility because the last update was 1,000+ days ago → ensure continued ad revenue stream
The counter-intuitive read
The app's extended development silence is not a failure but a feature…
Read the full takeBottom line
Bolt Length - (Nominal Length) serves as a stable, single-purpose utility for a specific engineering niche, but the lack of updates since 2023 risks eventual platform obsolescence.
Unlock 1 critical friction, 1 market threat and the analyst’s take.
Access the full report for freeFAQ
Is Bolt Length - (Nominal Length) suitable for non-Japanese engineering standards?
Does the app require an internet connection to function?
Is there a paid version without ads?
Sources
- [1] App Store
Report last updated