Comparison

Aerzeit vs Skyward

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

Head to head
About

Aerzeit

This app analyzes outdoor conditions for the next 48 hours to identify optimal times for ventilation. It allows customization of temperature ranges and environmental factors like rain, humidity, and pollen to help you decide when to open windows.

Highlights
  • 48-hour outdoor condition forecast
  • Customizable temperature ranges
  • Rain, humidity, wind, air quality, pollen filters
  • UV and sun position tracking
  • Apple Watch app and complication
  • Home Screen widget
  • Multi-language support
Features
Read full description

Aerzeit watches the next 48 hours and tells you the stretches when the air outside is in the temperature range you chose — so you know when it's worth opening up instead of leaving the system running. When nothing in the next two days is worth it, it says so. Everything else is yours to switch on: rain, humidity, wind, air quality, pollen, UV, sun position, and the hours you'd actually consider opening. Set it once for your climate and your house, wherever in the country you are. WHAT IT DOES Pick the outdoor temperature range you'd be happy to let in. Aerzeit watches the local forecast and tells you when conditions match — once a day, at a time you choose. It can also tell you the moment a window opens, and the moment to close it again. Turn on the filters that matter where you live: rain, humidity, wind, air quality, pollen, UV, and the hours of the day you'd actually consider opening up. Set a shortest and longest opening, so you don't hear about gaps too brief to use or leave one open longer than you meant to. A 48-hour chart shows every condition in one place, so you can see where they agree and where they don't. Tap "Use current location" to set a spot to roughly 1 km precision, or search for a town. A companion Apple Watch app and complication show the same at-a-glance status on your wrist, and keep themselves current even when your phone is elsewhere. A Home Screen widget shows the next open-window period at a glance. Aerzeit runs in 50 languages, picked on the Locations page beside °C/°F. WHAT IT DOESN'T DO Aerzeit doesn't model your home — it reports the outdoor conditions and leaves the judgement to you. Opening, sizing and timing the actual airing is yours. It reports public weather and environmental data (including air quality, pollen and UV) as a comfort tool, not medical advice; if a health condition makes any of those matter for you, follow your clinician's guidance. PRIVATE BY DESIGN - Empty Privacy Manifest. The app calls none of Apple's required-reason APIs. - No language detection. Aerzeit never reads your phone's language setting — that's one of the required-reason APIs it avoids — so you pick from 50 languages in the app instead. - Minimal data. To fetch a forecast, the app sends a roughly 7 km grid cell to Aerzeit's server — no account, no identifiers, no raw GPS, no history. Your temperature range and all your filter settings stay on your device. The data export (Export my data) shows exactly what's held — it's all on your phone. - No accounts. No analytics. No tracking. No advertising. No third-party SDKs beyond a small geospatial maths library. MADE INDEPENDENTLY Aerzeit is built and published by Samuel Harrold, based in Indianapolis, Indiana, USA. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Skyward

This app provides detailed weather forecasts for up to 30 days, with longer-range outlooks up to 6 months. It offers clear charts, radar, historical comparisons, and tide information to help users understand weather patterns.

Highlights
  • 30-day detailed forecasts
  • 6-month long-range outlooks
  • Rain radar and weather maps
  • Tide information
  • Historical weather comparisons
  • Customizable weather tiles
  • Smart weather alerts
Read full description

Skyward is a powerful weather app for people who want more than just today’s forecast. See detailed weather forecasts for the next 30 days, explore longer-range outlooks up to 6 months ahead, and understand what the weather is doing with clear charts, radar, historical comparisons, tides and useful insights. Skyward goes beyond temperature and rain chance. Follow air pressure, sea temperatures, precipitation, wind, sunshine, air quality, tides and climate trends in a clear and easy-to-read way. Key features include: • Detailed weather forecasts up to 30 days ahead • Long-range weather outlooks up to 6 months • Rain radar and weather maps • Save favourite places and switch between them quickly • High and low tide information • Air pressure graphs and trends • Sea temperature charts • Temperature, precipitation, wind and climate charts • Weather widgets for quick information • Smart weather alerts • Forecast confidence and uncertainty information • See how accurate previous Skyward forecasts were • Compare expected weather with normal conditions • Historical weather comparisons and records • Daily weather highlights and visual summaries • Sunrise, sunset and daylight information • Air quality information • Search weather anywhere in the world • Choose which weather tiles you want to see • Hide weather tiles you don’t need • Arrange Skyward around the information that matters to you • Customise units, language and appearance Understand the forecast Skyward doesn’t just show you numbers. It helps explain what stands out, how reliable a forecast is and how expected conditions compare with what is normal for that time of year. Look further ahead Explore weather trends weeks and even months into the future. Longer-range forecasts naturally become less certain, so Skyward also shows forecast confidence to help you understand how much weight to give them. Follow the tides Check high and low tide information alongside weather, wind and sea conditions. Useful for coastal trips, fishing, boating, beach days and anyone who wants to understand what is happening around the coast. Check past predictions Look back at previous forecasts and see how closely Skyward predicted the weather that actually occurred. Make Skyward your own Skyward can be adapted to the way you use a weather app. Save your favourite places, choose which weather tiles you want to see and hide the information you don’t need. Whether you mainly care about rain, wind, air pressure, sea conditions, tides or long-range forecasts, you can keep the information that matters to you and remove the rest. Your preferences stay remembered, keeping Skyward clean, personal and easy to use. Skyward is available in English, German, Dutch, French, Spanish and Portuguese, with more languages planned. No subscription. No monthly payments. Just one small price for a complete weather app.

Screenshots

Aerzeit4 screens
Skyward4 screens

Verdict

The call

The clearest difference is price: Aerzeit at Free against Skyward's $1.99. Aerzeit also leads on iOS requirement (16.4 vs 26.0). Skyward's advantage is in-app purchases (none vs 1). On rating, ratings volume, update cadence 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

Aerzeit is free to download; Skyward costs $1.99 up front. Aerzeit sells 1 in-app purchase, starting at $9.99 per year. Skyward asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Aerzeit against 5.0 for Skyward. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

Aerzeit ships an update every 3 days, Skyward every 5 days. The most recent releases landed on October 31, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 5 level
Aerzeit versus Skyward: the parameters behind the verdict, then further details
ParameterAerzeitSkyward
PriceFree — better$1.99
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 3 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPad, Apple Watch — betteriPhone, iPad
Requires iOS16.4 — better26.0
Further details — not scored
Size27 MB7 MB
Age rating4+4+
DeveloperSamuel HarroldAhmed Khelifi

Customer experience

Aerzeit

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Skyward

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Aerzeit

Subscriptions1
  • Aerzeit Premium$9.991 Year
None

Skyward

No in-app purchases

Questions

Is Aerzeit free?
Aerzeit is free to download, with in-app purchases available.
Is Skyward free?
Skyward costs $1.99, with no in-app purchases.
Which has better reviews, Aerzeit or Skyward?
Aerzeit and Skyward are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do Aerzeit or Skyward have ads?
Neither Aerzeit nor Skyward shows ads.
Which is updated more often, Aerzeit or Skyward?
Aerzeit ships an update every 3 days, and Skyward every 5 days. Most recently, Aerzeit was updated on October 31, 2026 and Skyward on October 29, 2026.

Other comparisons