Comparison

Weatherchime vs Synoptic Weather

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

Head to head
About

Weatherchime

Features
Read full description

Weatherchime delivers actionable weather forecasts as push notifications, every day at the time you choose. No need to open an app on a busy morning — one glance at your lock screen tells you whether you need an umbrella and what to wear. WHAT EACH NOTIFICATION TELLS YOU - Umbrella needed or not, and when rain starts ("Rain from around 2 PM") - Chance of precipitation - Outfit advice based on high/low temperatures - Heat and cold warnings - A one-line daily summary KEY FEATURES - Daily scheduled notifications — set any time in 15-minute steps, with multiple rules like "today's forecast at 7 AM" and "tomorrow's forecast at 9 PM" - Any location worldwide — home, business trips, or the city where your family lives - Sky lens — today's sky in a round window, with a 24-hour dial showing when it rains (or when the sun is strongest) - Rain chance in 6-hour blocks, a 24-hour temperature chart and a weekly umbrella outlook - Widgets for the Home Screen and Lock Screen - Rain radar and quick links to your favorite sites FREE TRIAL Notifications are free for 14 days after your first install. Viewing weather and saving locations is free forever. WEATHERCHIME PRO To keep receiving notifications after the trial, subscribe to Weatherchime Pro: - Monthly plan (auto-renewing subscription, first month free) - Yearly plan (auto-renewing subscription, first month free) - Lifetime (one-time purchase) Prices are shown on the in-app purchase screen. Subscriptions auto-renew unless canceled at least 24 hours before the end of the current period, and are charged to your Apple ID. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://yaneyuka.com/weatherchime-privacy-policy/ Weather data is provided by Apple Weather.

About

Synoptic Weather

Visualize rain patterns with an animated map and access a 16-day forecast for any location. Get detailed sea and air quality information, with widgets for quick access. No sign-up or ads are required.

Highlights
  • Animated rain map (6 hours past/future)
  • 16-day detailed forecast
  • Sea and wave conditions
  • Air quality index and dust warnings
  • Map search and current location forecast
  • Home and Lock Screen widgets
Features
Read full description

Synoptic Weather shows rain on the map and the forecast for any place in the world. • Animated rain map: six hours back and six hours ahead, with a time slider and play button. • 16-day forecast: temperature, feels-like, humidity, UV index and chance of rain. • Sea and waves: wave height, period, direction and water temperature — for surfing, swimming or fishing. • Air quality: the index, PM2.5, PM10 and dust, with a warning when dust is expected. • Tap the map or search for a city to see its forecast at once. • Opens on the forecast for where you are. • Home Screen and Lock Screen widgets for your location or a place you pick. No sign-up and no ads. Weather data from Open-Meteo; map from OpenStreetMap.

Screenshots

Weatherchime4 screens
Synoptic Weather4 screens

Verdict

The call

The clearest difference is in-app purchases: Synoptic Weather at none against Weatherchime's 3. Synoptic Weather also leads on update cadence (every 5 days vs every 6 weeks). On price, ads, device support and iOS requirement 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

Both are free to download. Weatherchime sells 3 in-app purchases, starting at $0.99 per month. Synoptic Weather asks for nothing beyond the download.

UpkeepUpdate frequency

Weatherchime ships an update every 6 weeks, Synoptic Weather every 5 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard2 real differences · 7 level
Weatherchime versus Synoptic Weather: the parameters behind the verdict, then further details
ParameterWeatherchimeSynoptic Weather
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 6 weeksEvery 5 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhoneiPhone, Apple Watch — better
Requires iOS16.0 — better17.0
Further details — not scored
Size26 MB3 MB
Age rating4+4+
Developermasafumi matsumotoSharon Shalem

In-app purchases

3 purchases

Weatherchime

Subscriptions2
  • Weatherchime Pro Monthly1 Month trial$0.991 Month
  • Weatherchime Pro Yearly1 Month trial$4.991 Year
One-time1
  • Weatherchime Pro Lifetime$9.99
None

Synoptic Weather

No in-app purchases

Questions

Is Weatherchime free?
Weatherchime is free to download, with in-app purchases available.
Is Synoptic Weather free?
Synoptic Weather is free to download, with no in-app purchases.
Do Weatherchime or Synoptic Weather have ads?
Neither Weatherchime nor Synoptic Weather shows ads.
Which is updated more often, Weatherchime or Synoptic Weather?
Weatherchime ships an update every 6 weeks, and Synoptic Weather every 5 days. Most recently, Weatherchime was updated on November 5, 2026 and Synoptic Weather on November 6, 2026.

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