DaySky Forecast vs Where's Karl
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DaySky Forecast
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Know what matters in today's weather. Check the next 24 hours and the 10-day forecast. See official alerts and find favorable times to go out. A CLEAR SUMMARY The automatic summary highlights changes that may affect your plans: when rain may arrive, notable heat or cold, wind and gusts, fog, high UV, or an evening cooldown. When nothing stands out, it says the day looks calm. HOURLY AND 10-DAY FORECASTS Check current conditions, the next 24 hours, and the 10-day forecast. Sunrise and sunset appear between the forecast hours when they occur. PLAN TIME OUTSIDE Choose a day with enough hourly forecast data and a duration of 30, 60, or 120 minutes. See up to three periods that fit your temperature, precipitation-probability, and wind preferences. Daylight and official weather alerts are considered, and high UV is flagged. If no period qualifies, the app explains the main reason. These are weather comparisons, not safety guarantees. OFFICIAL WEATHER ALERTS Read available official weather alerts and open details from the issuing organization. SEVEN WEATHER METRICS Explore feels-like temperature, humidity and dew point, wind and gusts, UV index, precipitation, visibility, and pressure. Each metric has an hourly chart and day selector. SAVED PLACES AND WIDGETS Search for cities and save places you check. Each one shows the current temperature and local time. Choose a place for your Home Screen or Lock Screen widgets. OPTIONAL REMINDERS Set a daily reminder to check the forecast or a reminder for the start of a suggested period. Notifications ask you to check the latest forecast; they are not real-time weather alerts. PRIVACY No accounts, ads, usage analytics, or third-party libraries. Location is requested only while you use the app. Coordinates required to provide weather information are sent to the necessary Apple services; the developer does not receive those coordinates. Saved places remain on the device. ACCESSIBILITY AND REQUIREMENTS Designed for VoiceOver and large text, including accessibility text sizes. For iPhone running iOS 17 or later. Weather data is provided by Apple Weather.
Where's Karl
This app visualizes fog and weather conditions across the Bay Area, helping you find clear skies. Easily track current conditions, explore different regions on a map, and save your favorite locations for quick checks before heading out.
- Track current fog and weather conditions
- Map visualization of Bay Area weather
- Compare conditions across regions
- Detailed local condition checks
- Save favorite locations
- Find clearer skies
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Bay Area weather can change in just a few miles. Where’s Karl helps you see where the fog is, where skies are clearing, and what conditions look like across the Bay Area. Whether you’re planning a walk, heading to the beach, crossing the Bay, or just wondering if the sun is out somewhere nearby, Where’s Karl makes it easy to check before you go. TRACK KARL See current fog and weather conditions across locations throughout the Bay Area. EXPLORE THE BAY Use the map to compare conditions around San Francisco, the North Bay, East Bay, South Bay, and Peninsula. CHECK LOCAL CONDITIONS Open a location for a closer look at current conditions and weather information. SAVE YOUR FAVORITES Keep the places you check most often close at hand for quick access. FIND CLEARER SKIES When one part of the Bay is buried in fog, another may be enjoying blue skies. Where’s Karl helps you see the difference. From foggy mornings to sunny afternoons, the Bay Area always keeps things interesting. Where’s Karl helps you see the Bay more clearly.
Screenshots
Verdict
The clearest difference is update cadence: Where's Karl at weekly against DaySky Forecast's fortnightly. On price, ads, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DaySky Forecast ships an update fortnightly, Where's Karl weekly. Both last shipped on October 31, 2026.
| Parameter | DaySky Forecast | Where's Karl |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Number of ratings | — | 4 — better |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone | iPhone |
| Requires iOS | 17.0 | 16.4 — better |
| Further details — not scored | ||
| Size | 3 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Tiago Galvao | Chelsea Montanaro |
In-app purchases
DaySky Forecast
No in-app purchases
Where's Karl
No in-app purchases
Questions
Is DaySky Forecast free?
Is Where's Karl free?
Do DaySky Forecast or Where's Karl have ads?
Which is updated more often, DaySky Forecast or Where's Karl?
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