CelsiUSA vs Perfect Day Weather
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CelsiUSA
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CelsiUSA is our app to help you switch to Celsius the easy way. Most of the world uses Celsius, but the US still uses Fahrenheit. Change is hard, but also good and it's time for us to change Celsius to the standard. Privacy: https://doorhingeparkour.com/privacypolicy.html EULA: https://doorhingeparkour.com/eula.html
Perfect Day Weather
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Most weather apps tell you what the weather is. Perfect Day Weather tells you whether it's the weather you actually want. Set your own criteria high and low temperature, humidity, wind speed, and chance of rain and every day in your forecast gets checked against them. No more scrolling through a week of numbers trying to work out which afternoon is worth planning around. PERFECT DAY SCORING Tell the app what comfortable means to you. Your ideal Saturday becomes obvious at a glance. SEVERE WEATHER ALERTS Official alerts from the National Weather Service and international agencies, delivered as time-sensitive notifications so they break through Focus. HOME & LOCK SCREEN WIDGETS Current conditions, your forecast, and your perfect-day count. Three lock screen sizes, three home screen sizes. GARDEN WATERING ADVISOR Enter your plant type, soil, and sun exposure. The app estimates soil moisture from recent rainfall and the coming forecast, then tells you whether to water today or save it. THERMOSTAT SAVINGS A recommended set point and daily schedule based on outdoor conditions, your home's size and insulation, and the hours you're away with an estimate of what you'd save. OUTFIT RECOMMENDATIONS What to wear, by time of day, for the conditions you'll actually walk into. HOURLY & 7-DAY FORECASTS Temperature, precipitation chance, humidity, wind, UV index, sunrise and sunset. MULTIPLE LOCATIONS Save the places you care about and switch between them in a tap. WORKS OFFLINE Your last forecast stays readable with a clear timestamp when you lose signal. METRIC OR IMPERIAL Celsius and kilometres, or Fahrenheit and miles defaulting to your region. REMOVE ADS Perfect Day Weather is free and ad-supported. One optional purchase removes ads permanently. Weather data provided by Apple Weather. Pollen levels are estimated from seasonal and atmospheric conditions and are not measured counts.
Screenshots
Verdict
The clearest difference is ads: CelsiUSA at none against Perfect Day Weather's shown. On price, update cadence, 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. CelsiUSA sells 1 one-off in-app purchase and Perfect Day Weather sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CelsiUSA ships an update every 7 months, Perfect Day Weather every 6 months. The most recent releases landed on November 3, 2026 and November 2, 2026 respectively.
| Parameter | CelsiUSA | Perfect Day Weather |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 7 months | Every 6 months — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 12 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Andrew Myers | Carlton Payne III |
In-app purchases
CelsiUSA
- Remove Ads$1.99
Perfect Day Weather
- emove Ads$3.99









