--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Sun Tracker: UV Index & Tan" developer_entity: "Stolanapp" bundle_id: "dev.ipapps.uvindex" app_store_id: "1526476234" category: "Weather" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS & Android" app_last_updated: "2026-07-24" report_date: "2026-08-05" last_verified: "2026-08-05T00:00:00.000Z" report_version: "5.4.1" total_reviews: 20070 overall_rating: 4.2 sentiment: "Mixed" sentiment_score: 45 confidence: "high" confidence_score: 0.7 top_praise_theme: "Personalized tanning advice and UV risk assessment provide actionable safety guidance for fair-skinned users" top_complaint_theme: "Intrusive and frequent advertisements make the free version of the app difficult to use" review_sample_size: 50 total_review_count: 50 analyzed_review_count: 50 data_age_days: 11 momentum_velocity: "steady" intelligence_version: 3 tags: ["weather", "freemium", "mixed sentiment", "mobile app", "app review", "app analysis", "outdoor", "enthusiasts,", "families,"] canonical_url: "https://marlvel.ai/apps/sun-tracker-uv-index-tan" license: "CC-BY-NC 4.0" content_version: "v2" --- # Sun Tracker: UV Index & Tan Intelligence Report ## TL;DR {#tldr} - **Category**: Weather · Freemium - **Signal**: Rating 4.18 · Sentiment Mixed - **Recent focus**: Intrusive and frequent advertisements make the free version of the app difficult to use (top complaint) · Personalized tanning advice and UV risk assessment provide actionable safety guidance for fair-skinned users (top praise) > **TL;DR:** Sun Tracker: UV Index & Tan is a weather app by Stolanapp, rated 4.18/5 by 20.1K users, with Mixed user sentiment (45/100), available on iOS & Android. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Sun Tracker: UV Index & Tan shows Mixed sentiment (4.18/5 from 20.1K reviews) - users praise personalized tanning advice and uv risk assessment provide actionable safety guidance for fair-skinned users but report issues with intrusive and frequent advertisements make the free version of the app difficult to use. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.18/5 (20.1K reviews) | | **User Mood** | Mixed | | **Category** | Weather | | **Developer** | Stolanapp | | **Pricing** | Freemium | | **Platforms** | iOS & Android | | **Confidence** | High (0.7/1.0) | | **Data Age** | 11d | ## Metadata & Market Performance - **Publisher:** Stolanapp - **Category:** Weather - **Target Audience:** Outdoor enthusiasts, families, and sun-conscious individuals seeking to manage tanning and sun protection routines. - **Platforms:** iOS & Android - **Version Reviewed:** 5.4.2 - **Report Date:** 2026-08-05 - **Signal Count:** 50 reviews analyzed - **Confidence:** High (0.7/1.0) - **App Store ID (iOS):** 1526476234 - **Bundle ID:** dev.ipapps.uvindex - **Google Play ID:** dev.ipapps.uvindex - **Performance Trend:** Mixed - **Data Window:** Analysis based on signals collected up to 2026-08-05 ## Executive Snapshot **What it is:** Sun Tracker: UV Index & Tan is a weather utility for outdoor enthusiasts that provides location-based UV monitoring and personalized sunscreen reapplication schedules on iOS and Android. **Why users hire it:** The app removes the cognitive load of tracking sun exposure and SPF timing, replacing manual guessing with automated alerts based on individual skin sensitivity. ## App DNA (Features & Intent) - **[Differentiator] Fitzpatrick Skin Type Calculator:** Customizes sun exposure limits and burn risk assessments based on user-selected skin sensitivity. * *User Intent:* Users value self-expression and personalized experiences. - **[Differentiator] Smart Sunscreen Reminders:** Sends push notifications for sunscreen reapplication based on current UV index and skin type. * *User Intent:* Users want timely prompts to stay engaged without missing updates. - **[Standard] Real-time UV Index Monitoring:** Provides location-based, hourly UV intensity data to track sun exposure levels. * *User Intent:* Users seek enhanced value through premium features. ## Market Position {#market-position} Sun Tracker: UV Index & Tan occupies a niche within the Weather category, serving users who prioritize skin health over general meteorological data. The 4.5-star rating on iOS across 442 reviews suggests a loyal core, though the 4.1-star rating on Android across 19,628 reviews indicates scaling friction. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free tier with ad support, In-app purchases for premium features - **Analysis:** Freemium model relies on ad-supported free usage with IAP monetization for advanced functionality. ## 🟡 User Sentiment (High Confidence: 50 of 50 reviews analyzed) {#user-sentiment} - **Overall Rating:** 4.18/5 - **Platform Split:** iOS 4.5/5 (442 ratings) | Android 4.2/5 (19.6K ratings) - **Overall Sentiment:** Mixed ### Top Praises - **Personalized tanning advice and UV risk assessment provide actionable safety guidance for fair-skinned users** - **The interface design is perceived as clean and easy to navigate for daily sun monitoring** ### Top Complaints (Impact Areas) - **Intrusive and frequent advertisements make the free version of the app difficult to use** ## SWOT Analysis {#swot} **Core Strengths:** - Fitzpatrick-based risk assessment creates a defensible barrier against generic weather apps **Growth Levers:** - Localized pricing could capture high-ARPU markets seeking ad-free sun safety ## Recent Changes (v2 → v3) {#recent-changes} Market positioning now distinguishes between iOS loyalty and Android scaling friction, while the SWOT analysis identifies localized pricing as a new opportunity for revenue growth. **Overall trend**: Mixed **Compared at**: 2026-08-05 ### High-impact changes - **[Shifted] Platform-specific performance visibility** (positioning) - **[Added] Localized pricing opportunity** (swot) ### Medium-impact changes - **[Shifted] Outlook trend adjustment** (sentiment) ## What's New - **Latest (v5.4.2, 1 weeks ago):** Introduced Personalized Tanning Programs to provide users with tailored sun exposure plans. ## App Momentum (Steady) {#momentum} - Shipped personalized tanning programs. - Maintains steady two-update monthly cadence. > **Cadence:** 2 total versions · 1 majors in last 6 months · 11 days since last update · 16 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Sun Tracker: UV Index & Tan is a weather app that is free with in-app purchases. With a 4.18/5 rating from 20.1K reviews, it shows mixed user reception. > **Bottom Line:** Sun Tracker: UV Index & Tan must address the technical instability and ad-frequency complaints to prevent churn, as the current friction outweighs the utility of the Fitzpatrick-based personalization. **Best for:** Outdoor enthusiasts, families, and sun-conscious individuals seeking to manage tanning and sun protection routines. ### PM Action Plan (Next Best Moves) - [ ] [PIVOT] Audit ad-frequency logic because users report ads appearing every few seconds → reduce churn ### Outlook: Mixed The market for specialized health-weather utilities is consolidating, with users favoring stability over feature breadth. Sun Tracker: UV Index & Tan is currently exposed due to post-update instability, which threatens to alienate the large Android user base before the next seasonal peak. - 🔴 Technical instability post-update prevents basic app usage, which erodes the daily habit and compounds the rating drag on Android. - 🟢 The introduction of personalized tanning programs shows active feature investment, signaling a commitment to expanding the core utility beyond basic tracking. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.18/5 | | Total Reviews | 20.1K | | Sentiment | Mixed (45/100) | | Confidence | High | | Pricing Model | Freemium | | Platforms | iOS & Android | | Key Features | 3 analyzed | | Trend | Mixed | | Outlook | Mixed | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Sun Tracker: UV Index & Tan** (this app) | 4.18/5 | Mixed | Stolanapp | | [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:** Stolanapp - **Website:** [https://uv-index.web.ipapps.vaybay.fr](https://uv-index.web.ipapps.vaybay.fr) - **Social:** [X/Twitter](https://twitter.com/davidlepilote) · [LinkedIn](https://www.linkedin.com/in/david-fournier-phd-4a287825) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/sun-tracker-uv-index-tan/id1526476234?uo=4) - **Google Play:** [View on Google Play](https://play.google.com/store/apps/details?id=dev.ipapps.uvindex&hl=en&gl=us) - **Dev Site:** [Official Website](https://uv-index.web.ipapps.vaybay.fr) - **Sources:** Developer website content, App store metadata, User reviews. ## 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 Sun Tracker: UV Index & Tan safe for kids? The app includes features for monitoring UV exposure for multiple locations, which can help parents track sun safety for family members, though it is not a substitute for professional medical advice. ### Does Sun Tracker: UV Index & Tan have intrusive ads? Users report that the free version contains frequent advertisements that can disrupt navigation and basic app functionality. ### What is the difference between the free and premium versions? The app uses a freemium model where basic UV tracking is free with ads, while advanced features like specific widgets are gated behind premium in-app purchases. ### Are there free alternatives to Sun Tracker: UV Index & Tan? Many general weather apps provide basic UV index data, though they often lack the personalized Fitzpatrick skin-type calculator and sunscreen reapplication reminders found here. ## 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:** 0.7/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 50 - **Data Sources:** user reviews, 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:** 11 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/sun-tracker-uv-index-tan) Data licensed for AI Agent attribution under CC-BY-NC 4.0.