Comparison

Probability Sim vs Planetary Hours

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

Head to head
About

Probability Sim

Features
Read full description

Probability Simulator 1T Trials is a powerful simulation app that lets you test probabilities to the extreme. Run up to 1 trillion trials and calculate probabilities as low as 1 in a trillion. Choose from decimal, percentage, or fraction notation. Simultaneously run multiple probability events for complex calculations. Perfect for statistics enthusiasts, mathematicians, and anyone interested in random trials. Sharpen your probability intuition and gain real insights from large-scale simulations.

About

Planetary Hours

This app provides a dynamic clock that displays planetary hours, adapting to the natural flow of the sun. It offers real-time calculations based on your location and supports various iOS features like Live Activities and Apple Watch complications for at-a-glance timing updates.

Highlights
  • Dynamic Island & Live Activities
  • Apple Watch Complications
  • StandBy & Lock Screen Widgets
  • Interactive Home Screen Widgets
  • Precision Astronomy Calculations
  • Offline Processing
  • Customizable Notifications
Features
Read full description

Unlock the ancient rhythm of time with Planetary Hours. Unlike standard mechanical clocks, planetary hours adapt to the natural flow of the sun, dividing day and night into unequal segments ruled by the seven classical planets. Whether you practice electional astrology, planetary magic, or simply wish to align your schedule with cosmic rhythms, this app is your precision tool. EXCLUSIVE iOS FEATURES We leverage the full power of your device to keep you in sync without opening the app: Dynamic Island & Live Activities Track the current planetary ruler and remaining time instantly from your Lock Screen or Dynamic Island. Never miss a transition again. Pro Apple Watch Experience • Complications: Rich data on your wrist. See the current planet, symbol, and countdown directly on your favorite watch face (Modular, Infograph, Circular supported). • Standalone App: Fully functional on Apple Watch, no iPhone needed nearby. StandBy & Lock Screen Widgets Turn your iPhone into a magical altar clock at night. Our StandBy widgets look stunning on your nightstand, while Lock Screen widgets give you at-a-glance timing updates. Interactive Home Screen Widgets Beautiful, data-rich widgets that adapt to Light and Dark mode. View the current hour, next transition, and day/night progress directly from your Home Screen. CORE FEATURES • Precision Astronomy: Real-time calculation based on your exact GPS coordinates and local sunrise/sunset. • Chaldean Order: Accurate sequence for all 7 classical planets (Saturn to Moon). • Privacy First: All calculations happen offline on your device. No tracking, no data collection. • Notification System: Get notified exactly when the planetary hour changes. Download now to synchronize your life with the solar rhythm.

Screenshots

Probability Sim2 screens
Planetary Hours4 screens

Verdict

The call

The clearest difference is price: Probability Sim at Free against Planetary Hours's $4.99. Probability Sim also leads on iOS requirement (15.0 vs 17). Planetary Hours's advantage is in-app purchases (none vs 2) and ads (none vs shown). On 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

Probability Sim is free to download; Planetary Hours costs $4.99 up front. Probability Sim sells 2 in-app purchases, starting at $4.99 per month. Planetary Hours asks for nothing beyond the download.

UpkeepUpdate frequency

Probability Sim ships an update every 10 months, Planetary Hours monthly. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Probability Sim versus Planetary Hours: the parameters behind the verdict, then further details
ParameterProbability SimPlanetary Hours
PriceFree — better$4.99
Rating—4.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 10 monthsMonthly — better
AdsYesNo — better
In-app purchasesYesNo — better
Monetization—Paid
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS15.0 — better17
Further details — not scored
Size29 MB16 MB
Age rating4+4+
Developerkota tada雪 蔺

In-app purchases

2 purchases

Probability Sim

Subscriptions2
  • Ad-free for 1 month7 Days trial$4.991 Month
  • Ad-free for 1 year14 Days trial$49.991 Year
None

Planetary Hours

No in-app purchases

Questions

Is Probability Sim free?
Probability Sim is free to download, with in-app purchases available.
Is Planetary Hours free?
Planetary Hours costs $4.99, with no in-app purchases.
Do Probability Sim or Planetary Hours have ads?
Probability Sim shows ads; Planetary Hours does not.
Which is updated more often, Probability Sim or Planetary Hours?
Probability Sim ships an update every 10 months, and Planetary Hours monthly. Most recently, Probability Sim was updated on October 30, 2026 and Planetary Hours on November 5, 2026.

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