Comparison

Weather Calc vs Rudecast

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

Head to head
About

Weather Calc

This app provides pilots and weather enthusiasts with a comprehensive tool for performing various weather-related calculations. It offers conversions and computations for atmospheric pressure, temperature, humidity, wind speed, and more.

Highlights
  • Altimeter setting calculation
  • Heat index computation
  • Pressure unit conversion
  • Relative humidity calculation
  • Speed of sound display
  • Wind chill computation
  • Wind speed conversion
Features
Currently charting
Read full description

If you’re a pilot, you often need to make lots of weather related calculations. Now there’s an easy solution, as close as your iPhone. Weather Calc performs the following weather relation calculations: Altimeter Setting - compute the altimeter setting based on elevation and station pressure Cricket Temperature - just for fun! This lets you estimate the temperature based on the chirp rate of a cricket Heat Index - compute the heat index based on the temperature and relative humidity Pressure - convert between hPa, atmospheres, psi, and inches and mm of mercury (Hg) Relative Humidity - compute the wet bulb and dewpoint based on the temperature, pressure, and relative humidity Speed Of Sound - displays the speed of sound in various units, given the temperature Standard Atmosphere - compute the temperature, pressure, density, viscosity, speed of sound, and more Station Pressure - compute the station pressure based on the elevation and altimeter setting. Temperature - convert between degrees Fahrenheit, Celsius, Kelvin, and Rankine Virtual Temperature - compute the virtual temperature based on the temperature, dewpoint, and pressure Vapor Pressure - com[ute the saturated and actual vapor pressure, as well as relative humidity Wet Bulb - compute the dewpoint and relative humidity based on the temperature, pressure, and wet bulb reading Wind Chill - compute the wind chill based on the temperature and wind speed Wind Speed - convert between knots, kilometers/hour, meters/second, miles/hour, feet/second Buy your copy now, and let Weather Calc take the drugery out of weather related calculations.

About

Rudecast

Features
Read full description

Rudecast: The Weather App That Roasts You Back Tired of boring weather apps giving you dry forecasts with zero personality? Rudecast delivers the weather with savage snark, brutal honesty, and zero sugarcoating because let’s be real, you don’t need another polite app telling you it’s “partly cloudy.” What You Get (Besides Insults): Hilariously Rude Forecasts – Get the weather, but with attitude. If it's raining, expect passive-aggressive mockery about your wet socks. If it’s hot, we’ll remind you that you made terrible life choices living where you do. Snarky Hourly & Daily Reports – Because checking the weather should be entertaining, not a chore. Customizable Rudeness Levels – Feeling sensitive? Keep it Mild. Want full-on verbal abuse? Crank it up to Assault Mode. Brutally Honest Temperature Descriptions – Not just “85°F and sunny”, but “85°F? Hope you like sweating through your shirt.” Wind, Rain, and Humidity Roasts – Find out exactly how much the weather is about to ruin your day with commentary that pulls no punches. Nerd Mode – For those who “need more details,” we’ll give you extra weather stats with an extra side of sarcasm. Why Rudecast? Because you don’t need another dull forecast. You need the weather served with personality, sarcasm, and just enough profanity to keep things interesting. Whether it’s roasting you for not bringing an umbrella or mocking your choice of clothing, Rudecast keeps things brutally honest so you can laugh while you suffer. Disclaimer: This app cannot control the weather (we asked). If you cry easily, maybe don’t use Assault Mode. Your umbrella is probably still in the car. Checking five other weather apps won’t make it any less rainy. So, if you’re ready to get insulted by your weather app, download Rudecast now. You deserve it.

Screenshots

Weather Calc4 screens
Rudecast4 screens

Verdict

The call

The clearest difference is price: Rudecast at Free against Weather Calc's $0.99. Rudecast also leads on update cadence (daily vs every 32 months). Weather Calc's advantage is chart position (#176 vs unranked) and iOS requirement (15.6 vs 17.6). On 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

CostPrice · In-app purchases · Ads · Monetization

Rudecast is free to download; Weather Calc costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Weather Calc ships an update every 32 months, Rudecast daily. The most recent releases landed on September 14, 2026 and September 21, 2026 respectively.

Scorecard4 real differences · 7 level
Weather Calc versus Rudecast: the parameters behind the verdict, then further details
ParameterWeather CalcRudecast
Price$0.99Free — better
Rating4.5 (4 ratings) — better—
Positive reviews85.7% of reviews—
Number of ratings4 — better—
Update frequencyEvery 32 monthsDaily — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#176 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better17.6
Further details — not scored
Size4 MB2 MB
Age rating4+12+
DeveloperBlack Cat SystemsCody Porche

In-app purchases

None

Weather Calc

No in-app purchases

None

Rudecast

No in-app purchases

Questions

Is Weather Calc free?
Weather Calc costs $0.99, with no in-app purchases.
Is Rudecast free?
Rudecast is free to download, with no in-app purchases.
Do Weather Calc or Rudecast have ads?
Neither Weather Calc nor Rudecast shows ads.
Which is updated more often, Weather Calc or Rudecast?
Weather Calc ships an update every 32 months, and Rudecast daily. Most recently, Weather Calc was updated on September 14, 2026 and Rudecast on September 21, 2026.

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