Comparison

Sun Facts vs Avycast

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

Head to head
About

Sun Facts

Get precise sunrise, sunset, solar noon, and twilight times for your location. Track celestial events like solstices and equinoxes, and view the sun's path. An optional pro version unlocks detailed moon phase and eclipse information.

Highlights
  • Sunrise and sunset times
  • Solar noon calculation
  • Twilight and golden hour tracking
  • Sun path visualization
  • Solstice and equinox dates
  • Widget for home screen
  • Eclipse event notifications
Features
Read full description

Calculate times of sunrise, sunset, moonrise (pro), moonset (pro) and more for your location at any given date. * Provides the following information: - Sunrise - Sunset - Solar noon - Twilight times - Blue hour - Golden hour - Equation of time - Declination - Azimuth of sunrise and sunset - Altitude of sun at noon - Sun Path during the day - Solstice and Equinox dates - Widget for displaying sunrise and sunset times on the Today screen - Date and time of next solar eclipse Pro Version (In-app-purchase): - Moon rise - Moon transit - Moon set - Declination - Azimuth of moon rise and moon set - Altitude of moon during transit - Date of next new/full moon - Moon Path during the day - Date and time of next lunar eclipse * Location from : - GPS receiver - map - list of more than 30000 cities - WGS-84 coordinates

About

Avycast

Features
Read full description

Avycast brings together the official avalanche bulletins of around 30 warning services in 21 countries across four continents, presented in a single, consistent interface and translated into 12 languages. Built for backcountry skiers, splitboarders, alpinists, ski tourers, and mountain guides who plan trips across borders — from the Alps to the Southern Alps, from Hokkaido to the Rockies. KEY FEATURES • Daily bulletins from official warning services — EAWS member services, SAIS (Scotland), Avalanche Canada, US avalanche centers, JAN (Japan Avalanche Network), Niseko Avalanche Institute, NZAA (New Zealand), Avalanchas.com.ar (Argentina), and Gudauri (Georgia) • 12 languages — English, German, Spanish, French, Italian, Japanese, Norwegian, Swedish, Czech, Romanian, Russian, Georgian • Danger rating by elevation band — Alpine, Treeline, Below Treeline • Active avalanche problems with size, frequency, and stability details • The full forecast text from the issuing service — highlights, avalanche activity, and snowpack analysis • Slope Risk Evaluator — combines the current danger rating with terrain exposure class (ATES) to suggest whether a planned tour is "Normal Caution", "Extra Caution", or "Not Recommended", based on published avalanche research (NAPADS, CMAH) • Favorites — save the regions you travel in for one-tap access • Original bulletin viewer — read the source bulletin in its native format at any time • Location-based — automatically finds the nearest region with an active bulletin • Faithful to the source — we never rewrite or "improve" danger ratings, and the translation follows the forecaster's own words instead of summarizing them COVERAGE (21 COUNTRIES) Europe — Italy, France, Switzerland, Austria, Germany (Bavaria), Slovenia, Spain (including the Catalan Pyrenees), Andorra, Norway, Sweden, Finland, Czech Republic, Slovakia, Romania, Great Britain (Scottish Highlands) Caucasus — Georgia (Gudauri) Asia — Japan (JAN regions and Niseko) North America — Canada, United States South America — Argentina (Bariloche, El Chaltén, San Martín de los Andes) Oceania — New Zealand (13 NZAA regions) More regions are added regularly. Every region also has a free forecast page on the web at avycast.app — one page per region, no account needed. DATA SOURCES All bulletins are fetched directly from the issuing avalanche warning service. Translations are generated automatically for your convenience — for critical decisions, always consult the original source bulletin (accessible via the "View original" button on every screen). IMPORTANT SAFETY NOTICE This app provides decision support based on published avalanche research. It is NOT a substitute for professional judgment, formal avalanche education, or local expertise. Always: — Read the original bulletin — Travel with trained partners — Carry a transceiver, shovel, and probe — Know how to use them Avalanche terrain is inherently hazardous. No app, bulletin, or tool can make it safe — only you can make informed decisions. SUBSCRIPTION Free: the full bulletin for your region, with one region change per day. Premium: unlimited region switching and favorites — monthly or annual, with the annual plan costing less than twelve monthly ones and its first 7 days free. Auto-renewing, cancel anytime in Settings > Apple Account > Subscriptions. Prices are localized per region and shown in the App Store before you subscribe. ——— Terms of Use (EULA): https://avycast.app/terms.html Privacy Policy: https://avycast.app/privacy.html

Screenshots

Sun Facts4 screens
Avycast4 screens

Verdict

The call

The clearest difference is ads: Avycast at none against Sun Facts's shown. Avycast also leads on update cadence (weekly vs every 2 months) and iOS requirement (15.1 vs 18.6). On price, in-app purchases and device support 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. Sun Facts sells 1 one-off in-app purchase and Avycast sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sun Facts ships an update every 2 months, Avycast weekly. The most recent releases landed on November 1, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
Sun Facts versus Avycast: the parameters behind the verdict, then further details
ParameterSun FactsAvycast
PriceFreeFree
Rating4.8 (296 ratings) — better—
Positive reviews97.3% of reviews—
Number of ratings296 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.615.1 — better
Further details — not scored
Size81 MB36 MB
Age rating+44+
DeveloperVolker Voecking Software EngineeringMikhail Konkov

Bugs and requests

Sun Facts

Reported bugs

8 issues
  • Time is not displayed correctly
  • Map is outdated
  • Map is cluttered with lines
  • Widget and location settings don't work well
  • App became unstable and crashed
Show 3 more
  • Street map is out of date
  • Lower culmination times not displayed
  • Card feature sometimes reacts slowly

Requested features

9 requests
  • Make Sun Facts Pro free
  • URL-scheme for app launch
  • Display WOZ (true local time)
  • More visual effects for solar/lunar events
  • 3D view on map
Show 4 more
  • AR function for sun/moon position
  • Visual representation of moon phases
  • Add altitude of the sun to largest widget
  • Add time charge in min and seconds for sunrise/sunset differences to widget

Avycast

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

Sun Facts

One-time1
  • Sun Facts Pro$4.99
2 purchases

Avycast

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Yearly7 Days trial$14.991 Year

Questions

Is Sun Facts free?
Sun Facts is free to download, with in-app purchases available.
Is Avycast free?
Avycast is free to download, with in-app purchases available.
Do Sun Facts or Avycast have ads?
Sun Facts shows ads; Avycast does not.
Which is updated more often, Sun Facts or Avycast?
Sun Facts ships an update every 2 months, and Avycast weekly. Most recently, Sun Facts was updated on November 1, 2026 and Avycast on October 22, 2026.

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