--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "UV-Index forecast" developer_entity: "Hideaki Uchikoshi" bundle_id: "com.hideucks.UVindex" app_store_id: "6503669685" category: "Weather" primary_platform: "ios" primary_monetization: "Free" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-07-29" report_date: "2026-08-05" last_verified: "2026-08-05T00:00:00.000Z" report_version: "1.0.60" total_reviews: 0 confidence: "low" confidence_score: 0.15 data_age_days: 23 momentum_velocity: "maintenance" intelligence_version: 3 tags: ["weather", "free", "mobile app", "app review", "app analysis", "individuals", "seeking", "localized"] canonical_url: "https://marlvel.ai/apps/uv-index-forecast-1" license: "CC-BY-NC 4.0" content_version: "v2" --- # UV-Index forecast Intelligence Report ## TL;DR {#tldr} - **Category**: Weather · Free > **TL;DR:** UV-Index forecast is a weather app by Hideaki Uchikoshi, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** UV-Index forecast is a weather app by Hideaki Uchikoshi. ## Quick Facts | Fact | Value | | :--- | :--- | | **Category** | Weather | | **Developer** | Hideaki Uchikoshi | | **Pricing** | Free | | **Platforms** | iOS | | **Confidence** | Low (0.15/1.0) | | **Data Age** | 23d | ## Metadata & Market Performance - **Publisher:** Hideaki Uchikoshi - **Category:** Weather - **Target Audience:** Individuals seeking localized weather and sun safety data for outdoor activity planning. - **Platforms:** iOS - **Version Reviewed:** 1.0.60 - **Report Date:** 2026-08-05 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.15/1.0) - **App Store ID (iOS):** 6503669685 - **Bundle ID:** com.hideucks.UVindex - **Performance Trend:** Declining - **Data Window:** Analysis based on signals collected up to 2026-08-05 ## Executive Snapshot **What it is:** UV-Index Forecast is a weather utility that provides localized ultraviolet radiation data for sun exposure monitoring on iOS. **Why users hire it:** The app removes the friction of searching for localized sun safety data by providing a dedicated, ad-supported utility for outdoor planning. ## App DNA (Features & Intent) - **[Standard] UV Index Forecast:** Provides localized ultraviolet radiation index data for sun exposure monitoring. Revenue link: Ad-supported utility driving session frequency. * *User Intent:* Users seek enhanced value through premium features. - **[Standard] Advertisement Display:** Integrates third-party ad units within the application interface. Revenue link: Direct monetization via ad-impression inventory. ## Market Position {#market-position} UV-Index Forecast occupies a niche utility position within the Weather category, relying on a single-feature focus rather than the comprehensive data sets offered by category leaders. ## Monetization Strategy - **Model:** Free - **Tiers:** Free with advertisements - **Analysis:** The app operates on an ad-supported model with no visible subscription or in-app purchase gates. ## SWOT Analysis {#swot} **Core Strengths:** - Localized UV radiation data provides specific utility for outdoor activity planning. **Growth Levers:** - Integration of push notifications for high-UV alerts could increase daily session frequency. ## Recent Changes (v2 → v3) {#recent-changes} The competitive assessment has shifted from a neutral observation of maintenance-mode status to a more critical stance regarding the app's long-term market viability. The analysis now highlights the specific risk of user attrition as competitors continue to iterate on comprehensive weather bundles. **Overall trend**: Declining **Compared at**: 2026-08-05 ### High-impact changes - **[Shifted] Critical Competitive Outlook** (positioning) ### Medium-impact changes - **[Added] Expanded Weakness and Threat Definitions** (swot) ## What's New - **Latest (v1.0.60, 6 days ago):** Optimized advertisement frequency, screen transitions, and internal performance stability. ## App Momentum (Maintenance) {#momentum} - Ships bug fixes only. - No feature expansion in latest release. > **Cadence:** 1 total versions · 0 majors in last 6 months · 6 days since last update ## The "So What?" (Strategic Takeaway) {#so-what} UV-Index forecast is a weather app that is completely free. > **Bottom Line:** Users report: UV-Index Forecast serves a narrow utility, but the lack of active feature development leaves it exposed to broader weather apps that bundle UV data. Proactive alerts would unlock higher session frequency and differentiate the app from static, maintenance-mode utilities. **Best for:** Individuals seeking localized weather and sun safety data for outdoor activity planning. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Ship push notifications for high-UV alerts because current manual-check utility limits session frequency → increase daily active usage ### Outlook: Stable The weather utility market is consolidating around comprehensive, multi-data platforms that offer higher value per session. UV-Index Forecast remains exposed due to its single-feature focus and lack of proactive engagement tools, which will likely lead to user attrition as competitors continue to iterate. - 🔴 The maintenance-only release cadence suggests no active investment, which limits the app's ability to compete with feature-rich weather bundles. - ⚪ The ad-supported model remains the sole revenue driver, which restricts monetization potential compared to subscription-based weather utilities. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Total Reviews | 0 | | Confidence | Low | | Pricing Model | Free | | Platforms | iOS | | Key Features | 2 analyzed | | Trend | Declining | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **UV-Index forecast** (this app) | N/A/5 | N/A | Hideaki Uchikoshi | | [Bauernkalender](https://marlvel.ai/apps/ch-swift-bauernkalender) | N/A/5 | N/A | Swift Management AG | | [Forecast & What to Wear](https://marlvel.ai/apps/com-appsforparents-weatherforkids) | 4.2/5 | N/A | Natalia Jakubczyk-Gajewska | | [Weather&Clothes](https://marlvel.ai/apps/com-air-weather_and_clothes) | 2.7/5 | N/A | fk.system | | [처음날씨 - 잠금화면 및 알람으로 오늘의 날씨를!](https://marlvel.ai/apps/com-woozuda-weather) | 4.2/5 | N/A | WOOZUDA | | [미세미세 - 미세먼지, 초미세먼지, 날씨](https://marlvel.ai/apps/cheehoon-ha-particulateforecaster-particulateforecaster) | 4.8/5 | Excited | LifeOverflow Inc. | ## Company Profile - **Developer:** Hideaki Uchikoshi - **Website:** [https://achi3net.web.app](https://achi3net.web.app) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/uv-index-forecast/id6503669685?uo=4) - **Dev Site:** [Official Website](https://achi3net.web.app) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*Bauernkalender*](https://marlvel.ai/apps/ch-swift-bauernkalender) (Swift Management AG) · N/A Rating - [*Forecast & What to Wear*](https://marlvel.ai/apps/com-appsforparents-weatherforkids) (Natalia Jakubczyk-Gajewska) · 4.2/5 Rating - [*Weather&Clothes*](https://marlvel.ai/apps/com-air-weather_and_clothes) (fk.system) · 2.7/5 Rating - [*처음날씨 - 잠금화면 및 알람으로 오늘의 날씨를!*](https://marlvel.ai/apps/com-woozuda-weather) (WOOZUDA) · 4.2/5 Rating - [*미세미세 - 미세먼지, 초미세먼지, 날씨*](https://marlvel.ai/apps/cheehoon-ha-particulateforecaster-particulateforecaster) (LifeOverflow Inc.) · 4.8/5 Rating | Positive Sentiment - [*너의날씨: 미세먼지, 지도, 레이더, 캐릭터, 위젯*](https://marlvel.ai/apps/kr-guzi-yourweather) (구지랩(GuziLab)) · 5.0/5 Rating - [*ชายฝั่ง รู้ทันระดับน้ำ*](https://marlvel.ai/apps/hii-pttep-chaifang-mobile) (Hydro Informatics Institute) · 4.9/5 Rating - [*ภัยพิบัติไทย*](https://marlvel.ai/apps/biz-harmoniz-earthquake_alert_thai) (Harmoniz InterSoftware) · N/A Rating - [*13abc First Alert Weather*](https://marlvel.ai/apps/com-gray-wtvg-13abc-weather) (Gray Television Group, Inc.) · 4.6/5 Rating - [*13WarnMe*](https://marlvel.ai/apps/13warnme) (Local TV LLC) · 3.0/5 Rating ## Frequently Asked Questions {#faq} ### Is UV-Index Forecast free to use? Yes, UV-Index Forecast is free, operating on an ad-supported model with no subscription or in-app purchase options. ### Does UV-Index Forecast provide weather forecasts? No, the app is specialized for localized ultraviolet radiation index data and does not provide general weather forecasting. ### Are there alternatives to UV-Index Forecast? Users seeking more comprehensive data should consider general weather applications, which often bundle UV index information with broader temperature and precipitation forecasts. ## 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:** 23 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/uv-index-forecast-1) Data licensed for AI Agent attribution under CC-BY-NC 4.0.