Sunbeam: UV Index

Sunbeam: UV Index

By Electric Acorn

Sunbeam is a UV index forecasting app for iOS that provides real-time sun exposure data and health tracking.

The App DNA

What makes this app unique?

Users hire Sunbeam to manage sun exposure and Vitamin D intake through quick-glance widgets and health-platform syncing, removing the need to manually track UV safety.

For Outdoor enthusiasts, health-conscious individuals, and users tracking Vitamin D or sun exposure for skin safety.

What does it look like?

Key features

Personalized Exposure Trackingedge

Calculates sunburn risk and Vitamin D estimates based on individual skin type settings.

Apple Health Integrationstandard

Syncs Time in Daylight and Vitamin D metrics to the Apple Health app.

Live Activitiesedge

Displays real-time sun exposure statistics on the Lock Screen.

How much does it cost?

freemiumFree tier with basic UV forecastsSunbeam Pro subscription for personalized tracking, extended forecasts, and live activities

Freemium model gates advanced health tracking and long-range forecasting behind a subscription to support indie development.

Velocity

Active developmentShow more...

5 versions in history. Development pace: active.

See all version history

Who built it?

Electric Acorn

1 app tracked · Weather

Explore the full publisher profile

User Sentiment

What do users think recently?

Users report: Review voice lately leans mixed. Users appreciate hourly uv index tracking provides actionable data for planning safe outdoor sun exposure sessions.

How are ratings & reviews evolving?

App Store
4.70 · 2k

What users say, by theme

What Users Love
  • Hourly UV index tracking provides actionable data for planning safe outdoor sun exposure sessions
What Frustrates Users
  • Aggressive paywalling of core features forces users into subscriptions for basic UV index visibility
What Users Want 1 request inside

49 of 49 recent reviews analyzed · high confidence · Mixed overall

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Unlock 1 user request, each backed by review evidence.

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Competition

Competitive landscape for Sunbeam: UV Index

How's the Weather market?

Sunbeam holds a #87 Free rank in the US Weather category, maintaining a 4.7★ rating across 1,575 reviews. The gap between its high utility rating and the recurring subscription complaints signals a need to rebalance the free-tier value.

Read the market outlook

The rivals identified

UVLens - UV Index
UVLens - UV Indexactive nemesis

By ElementX Limited

This is the only direct competitor that focuses exclusively on UV index tracking and sun safety, matching this app's core value proposition.

  • Provides personalized sun exposure recommendations based on individual skin type and local UV forecasts.
  • Integrates a dedicated 'Vitamin D' tracker that correlates sun exposure with daily health goals.
  • Offers a specialized 'Burn Time' calculator that alerts users before they reach their sunburn threshold.
Sunbeam: UV Index vs UVLens - UV Index

Unlock the head-to-head verdict: where this rival wins, and where it loses.

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The Analyst's Read

Key takeaways for Sunbeam: UV Index

Where is it heading?

The UV-tracking market is consolidating around apps that offer personalized safety alerts, putting pressure on Sunbeam's passive data model. If the team does not address the paywall friction, they risk losing the casual user base to general-purpose weather apps that include UV data for free.

  • Aggressive paywalling of core UV data triggers high-frequency complaints, which limits new-user conversion and long-term retention.
  • The latest release added interactive charts and goal tracking, signaling active feature investment rather than maintenance mode.

The SWOT

Core Strengths
  • Widget-first UX maintains high daily visibility
  • Apple Health integration creates sticky data-sync habits
Critical Frictions 2 weaknesses inside
Growth Levers
  • Expand B2B partnerships with outdoor gear retailers
  • Add personalized Vitamin D goal-setting
Market Threats 2 threats identified

Next best moves

1 Invest · 1 Pivot

Ship a lifetime purchase option because users consistently request it over subscriptions → increase conversion

+ 1 more prioritized move

The counter-intuitive read

The app's high rating is a risk…

Read the full take

Feature gaps

Burn Time calculator (available in UVLens but missing here) +1

Since the last report: The app has refined its competitive positioning toward a widget-first health tool, but faces increased user backlash regarding its subscription-only access to core safety data.

Bottom line

Sunbeam provides high utility through its widget-first design, but the aggressive paywalling of core data drives churn, so the PM should prioritize a lifetime purchase option to align with user preference.

Unlock 2 critical frictions, 2 market threats, 1 more prioritized move and the analyst’s take.

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Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by Sunbeam: UV Index, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

What's new

The app has refined its competitive positioning toward a widget-first health tool, but faces increased user backlash regarding its subscription-only access to core safety data.

shifted

Widget-first market focus

declined

Paywall-related churn friction

improved

Feature differentiation

added

Subscription-only model validation

Cite this report

Marlvel.ai. “Sunbeam: UV Index Intelligence Report.” Updated Jun 9, 2026. https://marlvel.ai/apps/org-richardj-sunbeam

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