Comparison

Eclipse Timer vs UV Index

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Eclipse Timer

Features
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Eclipse Timer computes precise contact times for solar eclipses at any location you choose — down to the second. Pick an eclipse from a catalog spanning 1900 to 2100, drop a pin on the map or use your GPS, and instantly see when each phase of the eclipse begins and ends at your exact location. FEATURES • Browse 200+ solar eclipses from 1900 to 2100 — total, annular, partial, and hybrid — with search and filtering by year, date, type, or catalog ID. • Tap the map, drag a pin, or use GPS to set your observer location. The engine computes results for your precise coordinates. • View all five contact times (C1, C2, Greatest Eclipse, C3, C4) in both UTC and your local time zone. See eclipse type, magnitude, and duration of totality or annularity at your chosen spot. • Live countdown timer shows days, hours, minutes, and seconds until the next eclipse event for the selected eclipse. • Set notification reminders for eclipse contacts — one hour before, ten minutes before, or at the moment of each event. Choose between system sounds, vibration, or spoken voice (TTS) alerts. • Interactive map overlays show the eclipse's visible path and central line so you can see where totality or annularity occurs. • NASA preview animations let you visualize each eclipse before it happens. • Save favorite locations for quick access across different eclipses. HOW IT WORKS Eclipse Timer uses the classical Besselian elements method — the same mathematical framework used by professional astronomers — to compute local eclipse circumstances. The engine evaluates polynomial shadow geometry at your observer coordinates to determine exactly when the moon's penumbral and umbral shadows reach your location. All computation happens on your device. Your location is never sent to any server. PRIVACY Eclipse Timer requests location access only when you choose to use GPS. Your coordinates stay on your device and are used solely to compute eclipse times. The app contains no ads, no analytics, no tracking, and no user accounts. See our full privacy policy for details. Whether you're planning a trip to see totality, checking if a partial eclipse will be visible from your backyard, or exploring historical eclipses — Eclipse Timer gives you the precise timing data you need.

About

UV Index

Features
Read full description

UV Tracker is your personal sun safety companion that helps you protect your skin from harmful UV rays. Get real-time UV index alerts, personalized sun protection recommendations based on your skin type, and calculate exactly how long you can safely stay in the sun. Key Features: Real-Time UV Index: Instant UV monitoring with color-coded risk levels (Low, Moderate, High, Very High, Extreme) Location-Based Data: Automatically fetch UV data for your current location or select any city worldwide Personalized Sun Timer: Calculate safe sun exposure time based on your skin type and SPF value with smart reapplication reminders 7-Day Forecast: Plan ahead with weekly UV predictions and safest/riskiest hours of the day Expert Tips: Get customized sun protection recommendations based on real-time UV levels Customizable Settings: Choose temperature units (°C/°F), wind speed (km/h/mph/m/s), time format (12/24-hour), and theme preference Skin Type Profiles: Support for all 6 Fitzpatrick skin types with personalized safe exposure times Offline Data: Always see your last updated information, even without internet connection Home Screen Widget: Quick access to UV index and daily forecast directly from your lock screen and home screen Whether you're planning a beach day, morning jog, or outdoor adventure, UV Tracker ensures you stay protected while enjoying the sunshine. Simple, fast, and science-based sun safety at your fingertips. Privacy Policy: https://mobyte.com.tr/en/uvtracker/privacy/ Terms & Conditions: https://mobyte.com.tr/en/uvtracker/terms/

Screenshots

Eclipse Timer4 screens
UV Index4 screens

Verdict

The call

The clearest difference is in-app purchases: Eclipse Timer at none against UV Index's 1. Eclipse Timer also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.0). On price and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. UV Index sells 1 one-off in-app purchase. Eclipse Timer asks for nothing beyond the download.

Scorecard3 real differences · 3 level
Eclipse Timer versus UV Index: the parameters behind the verdict, then further details
ParameterEclipse TimerUV Index
PriceFreeFree
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better26.0
Further details — not scored
Size29 MB3 MB
Age rating4+4+
DeveloperLalit SharmaEmre Erkis

In-app purchases

None

Eclipse Timer

No in-app purchases

1 purchases

UV Index

One-time1
  • UV Tracker Premium$9.99

Questions

Is Eclipse Timer free?
Eclipse Timer is free to download, with no in-app purchases.
Is UV Index free?
UV Index is free to download, with in-app purchases available.
Do Eclipse Timer or UV Index have ads?
Neither Eclipse Timer nor UV Index shows ads.

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