iWeather++ vs Parallel
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iWeather++
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iWeather combines forecasts from 30+ of the world's most trusted meteorological sources, including ECMWF, NOAA, Met Norway, UK Met Office, JMA, and your regional weather authority, then uses AI to deliver one hyper-accurate prediction. Near-Term Accuracy Most weather apps show you a 10-day forecast. iWeather focus on what matters: the next 5 hours with surgical precision. When you need to know if you'll make it home dry, iWeather delivers. Minute-by-Minute Precision See precipitation probability for every minute of the next hour. Know if you have 12 minutes or 47 minutes before the rain starts. Plan your day with confidence, not guesswork. Smarter Than Any Single Source Weather models disagree constantly. iWeather weighs each source by reputation, regional expertise, and real-time agreement, giving you a confidence-rated forecast that outperforms any single provider.
Parallel
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Parallel is a weather app for people who live between two scales. Most apps make you choose: Celsius or Fahrenheit, one or the other. Parallel shows both, every time — current conditions, the hourly timeline, and the full 10-day forecast, all in °C and °F at once. No toggling. No mental math. No "wait, is that hot?" WEATHER, BOTH WAYS Every temperature appears in both scales, side by side. The current reading, the highs and lows, feels-like, dew point — all dual, all the time. LEAD WITH YOUR UNIT Pick which scale comes first with a single setting. Think in Fahrenheit but check on family abroad? Grew up Celsius but live in the States? Put your number up front and keep the other one right beside it. WHO IT'S FOR – Households where people grew up on different scales – Immigrants and expats keeping one foot in each system – Travelers who don't want to recalibrate every trip – Anyone who's ever had to Google "20C in F" EVERYTHING YOU EXPECT – Current conditions and next-hour precipitation – Hour-by-hour timeline – Full 10-day forecast – Humidity, dew point, highs and lows – Powered by Apple Weather Parallel keeps both scales in view so you never have to translate the weather again.
Screenshots
Verdict
The clearest difference is iOS requirement: iWeather++ at 15.1 against Parallel's 17.0. 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.
| Parameter | iWeather++ | Parallel |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 weeks | — |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod — better | iPhone |
| Requires iOS | 15.1 — better | 17.0 |
| Further details — not scored | ||
| Size | 33 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Sihyeon Jang | Waystone Labs, LLC |
In-app purchases
iWeather++
No in-app purchases
Parallel
No in-app purchases








