Comparison

Arc vs Sun

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

Head to head
About

Arc

Features
Read full description

See the weather unfold. Arc gives the forecast a shape you can follow. Clouds, temperature and wind move together across one fluid timeline, making the changing day clear at a glance. An atmospheric view brings current conditions to life, with a concise summary of the weather. Explore the days ahead or uncover the details of any hour, right from the chart. Pro adds unlimited locations, more frequent updates and weather alerts, plus Home Screen widgets and an Apple Watch experience built around the same visual forecast. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Sun

Features
Read full description

Sun-Dog is a clean, focused weather app built on open data. Hourly trends for temperature, rain, sunshine and wind, a combined 14-day overview and all the important details show you the sky at a glance. Weather Windows find suitable times for walks, exercise, barbecues, beach trips, stargazing and more. Smart highlights call out important weather changes and significant rain or wind peaks. A sundog – also called a parhelion – is a real atmospheric phenomenon. When conditions are right, Sun-Dog quietly reminds you to look up. • Hourly charts for temperature, rain, sunshine and wind • Combined 14-day forecast with detailed hourly values • Weather Windows for activities and special times of day • Current conditions including feels-like, wind, humidity, pressure, UV and cloud cover • Rain radar and severe-weather alerts • Favorite places, widgets and Apple Watch complications • For iPhone, iPad, Mac and Apple Watch, in light and dark mode • Powered by Open-Meteo – free, open weather data. No account, no tracking.

Screenshots

Arc4 screens
Sun4 screens

Verdict

The call

The clearest difference is device support: Sun at 4 against Arc's 2. Arc's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, ads and in-app purchases 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. Arc sells 3 in-app purchases, starting at $3.99 per month and Sun sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Arc ships an update fortnightly, Sun every 2 weeks. The most recent releases landed on October 14, 2026 and October 8, 2026 respectively.

Scorecard2 real differences · 4 level
Arc versus Sun: the parameters behind the verdict, then further details
ParameterArcSun
PriceFreeFree
Update frequencyFortnightly — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, Apple WatchiPhone, iPad, Mac, Apple Watch — better
Requires iOS17.0 — better26.0
Further details — not scored
Size43 MB21 MB
Age rating4+4+
DeveloperMarios PentelasMichael Lauer

In-app purchases

3 purchases

Arc

Subscriptions3
  • Meteogram Monthly3 Days trial$3.991 Month
  • Yearly Pro7 Days trial$24.991 Year
  • Meteogram Yearly7 Days trial$29.991 Year
3 purchases

Sun

One-time3
  • Small Tip$1.99
  • Medium Tip$3.99
  • Large Tip$6.99

Questions

Is Arc free?
Arc is free to download, with in-app purchases available.
Is Sun free?
Sun is free to download, with in-app purchases available.
Do Arc or Sun have ads?
Neither Arc nor Sun shows ads.
Which is updated more often, Arc or Sun?
Arc ships an update fortnightly, and Sun every 2 weeks. Most recently, Arc was updated on October 14, 2026 and Sun on October 8, 2026.

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