--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Bolt Length - (Nominal Length)" developer_entity: "mitsunori oishi" bundle_id: "com.mitsunorioishi.ScrewSet" app_store_id: "1042345193" category: "Productivity" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2023-11-27" report_date: "2026-09-14" last_verified: "2026-09-14T00:00:00.000Z" report_version: "1.2.1" total_reviews: 2 overall_rating: 3 confidence: "low" confidence_score: 0.15 data_age_days: 57 momentum_velocity: "zombie" intelligence_version: 2 tags: ["productivity", "free", "mobile app", "app review", "app analysis", "mechanical", "designers", "engineers"] canonical_url: "https://marlvel.ai/apps/bolt-length-nominal-length" license: "CC-BY-NC 4.0" content_version: "v2" --- # Bolt Length - (Nominal Length) Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Free - **Signal**: Rating 3 > **TL;DR:** Bolt Length - (Nominal Length) is a productivity app by mitsunori oishi, rated 3/5 by 2 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Bolt Length - (Nominal Length) is a productivity app by mitsunori oishi. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 3/5 (2 reviews) | | **Category** | Productivity | | **Developer** | mitsunori oishi | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.15/1.0) | | **Data Age** | 57d | ## Metadata & Market Performance - **Publisher:** mitsunori oishi - **Category:** Productivity - **Target Audience:** Mechanical designers and engineers in Japan requiring quick reference for JIS-standard screw lengths. - **Platforms:** iOS - **Version Reviewed:** 1.2.1 - **Report Date:** 2026-09-14 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.15/1.0) - **App Store ID (iOS):** 1042345193 - **Bundle ID:** com.mitsunorioishi.ScrewSet - **Data Window:** Analysis based on signals collected up to 2026-09-14 ## Executive Snapshot **What it is:** Bolt Length - (Nominal Length) is a specialized mechanical design utility for Japanese engineers, providing JIS-compliant metric coarse screw length calculations on iOS. **Why users hire it:** The app removes the cognitive friction of manual JIS table lookups for mechanical designers, providing a reliable, standardized reference tool. ## App DNA (Features & Intent) - **[Differentiator] JIS-Compliant Screw Length Calculation:** Calculates metric coarse screw lengths based on Japanese Industrial Standards for mechanical design. - **[Standard] Metric Coarse Screw Support:** Limits calculations to standard metric coarse screw specifications. ## Market Position {#market-position} 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. ## Monetization Strategy - **Model:** Free - **Tiers:** Free - **Analysis:** The app is free to use and monetizes through ad inventory, as evidenced by the recent ad SDK update. ## SWOT Analysis {#swot} **Core Strengths:** - JIS-standard compliance establishes category authority for Japanese mechanical engineering workflows **Growth Levers:** - Localized expansion into broader JIS-compliant hardware categories could capture users currently relying on manual lookup tables ## What's New - **Latest (v1.2.1, 2 years ago):** Updated startup process and ad SDK. ## App Momentum (Zombie) {#momentum} - No functional updates in 34 months. - Last release updated ad SDK only. > **Cadence:** 1 total versions · 0 majors in last 6 months · 1021 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} Bolt Length - (Nominal Length) is a productivity app that is completely free. It holds a 3/5 rating from 2 reviews. > **Bottom 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. **Best for:** Mechanical designers and engineers in Japan requiring quick reference for JIS-standard screw lengths. ### PM Action Plan (Next Best Moves) - [ ] [MAINTAIN] Audit ad SDK compatibility because the last update was 1,000+ days ago → ensure continued ad revenue stream ### Outlook: Stable 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. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 3/5 | | Total Reviews | 2 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 2 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Bolt Length - (Nominal Length)** (this app) | 3/5 | N/A | mitsunori oishi | | [Mitsu: AI Life Coach](https://marlvel.ai/apps/mitsu-ai-life-coach) | N/A/5 | N/A | C2 Insights | | [ChatGPT](https://marlvel.ai/apps/chatgpt) | 4.8/5 | n/a | OpenAI OpCo, LLC | | [HitWave](https://marlvel.ai/apps/ciendor-applications-hitwave) | 2.6/5 | Mixed | Ciendor Holdings Corp. LTD | | [Paper: Sketch, Draw & Create](https://marlvel.ai/apps/paper-sketch-draw-create) | 4.6/5 | N/A | Evernote Corporation | | [Pattrn - Discipline Tracker](https://marlvel.ai/apps/pattrn-discipline-tracker) | 4.8/5 | Thrilled | Pedro Schott | ## Company Profile - **Developer:** mitsunori oishi - **Website:** [https://www.mapp2014.com/](https://www.mapp2014.com/) - **Social:** [Instagram](https://www.instagram.com/mapp_2014) ## Data Sources & Links - **App Store ID:** 1042345193 - **Dev Site:** [Official Website](https://www.mapp2014.com/) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*Mitsu: AI Life Coach*](https://marlvel.ai/apps/mitsu-ai-life-coach) (C2 Insights) · N/A Rating - [*ChatGPT*](https://marlvel.ai/apps/chatgpt) (OpenAI OpCo, LLC) · 4.8/5 Rating - [*HitWave*](https://marlvel.ai/apps/ciendor-applications-hitwave) (Ciendor Holdings Corp. LTD) · 2.6/5 Rating - [*Paper: Sketch, Draw & Create*](https://marlvel.ai/apps/paper-sketch-draw-create) (Evernote Corporation) · 4.6/5 Rating - [*Pattrn - Discipline Tracker*](https://marlvel.ai/apps/pattrn-discipline-tracker) (Pedro Schott) · 4.8/5 Rating | Excellent Sentiment - [*Perplexity - AI Search & Chat*](https://marlvel.ai/apps/perplexity-ai-search-chat) (Perplexity AI, Inc.) · 4.8/5 Rating - [*ScreenZen- Screen Time Control*](https://marlvel.ai/apps/screenzen-screen-time-control) (ScreenZen LLC) · 4.8/5 Rating | Excellent Sentiment - [*SpaceDesk App*](https://marlvel.ai/apps/spacedesk-app) (Hawsabah) · N/A Rating - [*VPN 360: Fast & Secure Proxy*](https://marlvel.ai/apps/co-infinitysoft-vpn360) (Pango GmbH) · 4.5/5 Rating - [*VPN - Super Unlimited Proxy*](https://marlvel.ai/apps/vpn-super-unlimited-proxy) (Mobile Jump Pte Ltd) · 4.7/5 Rating | Excellent Sentiment ## Frequently Asked Questions {#faq} ### Is Bolt Length - (Nominal Length) suitable for non-Japanese engineering standards? No, the app is specifically designed for Japanese Industrial Standards (JIS) and is intended for use within that specific regulatory and design framework. ### Does the app require an internet connection to function? While the app performs calculations locally, it includes ad SDKs that may require connectivity to load advertisements. ### Is there a paid version without ads? The app is currently offered as a free, ad-supported utility with no mention of a paid or ad-free tier in the store listing. ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.15/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** developer website, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 57 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/bolt-length-nominal-length) Data licensed for AI Agent attribution under CC-BY-NC 4.0.