Comparison

Wadokei57 Astronomical clock vs ParkTimer

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

Head to head
About

Wadokei57 Astronomical clock

This app combines a traditional Japanese clock based on sunrise and sunset with a miniature planetarium. It displays celestial movements, moon phases, and seasonal changes, all optimized for Apple Watch.

Highlights
  • Traditional Japanese time system
  • Miniature planetarium with star simulation
  • Moon phase and seasonal displays
  • Complications for Moon, Sun, Venus
  • Time navigation via crown rotation
  • Offline operation
Features
Read full description

This Apple Watch app combines a Japanese "Wa-dokei" (traditional Japanese clock) based on sunrise and sunset with the world's smallest planetarium. The red hand at the top of the clock shows the current time. The center hand indicates the phases of the moon and the seasons. ● Key Features ・Complications for the Moon, Sun, Venus, and traditional Japanese time ・Traditional Japanese time: A system dividing the day (sunrise to sunset) and night (sunset to sunrise) into six segments each ・Displays time periods based on the 12 Chinese Zodiac signs, synchronized with local sunrise and sunset times based on latitude and longitude ・Simulates the starry sky for locations around the world ・Time navigation by rotating the crown ・Displays a gradient on the day/night ring representing night sky brightness based on moon phase and altitude ●About WADOKEI The ancient Japanese WADOKEI has 12 animals named for each hour of the day. ・子: Mid-night – when the Rat is most active. ・丑: Early hours of night – when the Ox is chewing the cud. ・寅: Late hours of night – when the Tiger is prowling and seeking food. ・卯: Sunrise – when the Hare and the Rabbit are busy foraging for food. ・辰: Early morning – when the divine Dragon rises to control the rain (the dawn sunrise determining the day’s weather). ・巳: Mid-morning – when the Snake becomes active. ・午: Mid-day – when the Horse cavalry return from drill. ・未: Early-afternoon – when the Sheep is eating grass. ・申: Mid-afternoon – when the Monkey becomes active hunting scraps. ・酉: Late-afternoon – when the C**k returns from the forest to roost. ・戌: Early-evening – when the Dog keeps watch. ・亥: Late-evening – when everything is quiet and the Pig or Boar forages. (source:wadokei.org) In this app, the hour of 酉 is set to the time of sunset. ● Celestial Simulation ・Real-time Celestial Calculation: Accurate sunrise and sunset times for your current location. ・Constellation Display: Accurately depicts over 1,000 stars and 88 constellations. ・Sun and Moon Orbits: Track the movement of celestial bodies in real time. ・Tracks the movement of Venus, Mars, Jupiter, and Saturn in real time. ●Privacy & Security ・Location Information: Used Only for Astronomical Calculations; No External Transmission ・Offline Operation: No Internet Connection Required ・Data Protection: All Calculations Performed Locally ・Battery Optimization: Long-Lasting Operation with Efficient Algorithms ● 24 Solar Terms Calendar ・Calculates and displays the 24 solar terms based on the solar orbital position ・Moon Phase Display: Precisely reproduces the phases of the moon, from new moon to full moon. Inverted left and right in the Southern Hemisphere. ・Seasonal Hand: Turn the crown to simulate seasonal changes throughout the year. ● Apple Watch Optimization Swipe to switch between Japanese clock display, starry sky display, and settings screen. Switch between Japanese clock display and starry sky display with index finger and thumb gestures. (Series 9 and later) Double-tap the Japanese clock display screen to switch the kanji characters to animal illustrations. Location support: Accurate astronomical calculations anywhere in the world. ● Expanded Starry Sky View Observe the constellations. Turn the crown to move through time. ・The starry sky rotates in real time with the electronic compass. ・Displays the direction and altitude of the stars. ・Displays the positions of the sun and moon. ● Intuitive Operation ・Long Press: A 10-second animation of seasonal changes throughout the year. ・Swipe: Switch between Japanese clock and starry sky view. < Download now > Timeless beauty meets cutting-edge technology Would you like to watch a millennium of time on your wrist? This software uses the following libraries: ●SunCalc Copyright (c) 2025, Vladimir Agafonkin All rights reserved. (BSD-2-Clause license)

About

ParkTimer

This app helps drivers avoid overpaying for parking and easily locate their vehicles. It features a smart countdown timer with color-coded alerts, customizable billing rules, and the ability to record parking spot details like photos and QR codes. Live Activities and widgets provide at-a-glance tracking without unlocking your device.

Highlights
  • Smart countdown timer with visual alerts
  • Customizable parking billing rules
  • Record parking spot photos and QR codes
  • Live Activities for Dynamic Island
  • Lock Screen and Home Screen widgets
  • Privacy-first local data storage
Features
Read full description

WHY PARKTIMER? Ever paid for an extra hour just because you overstayed by a few minutes at the mall? Forgot which level you parked on and wasted time searching? ParkTimer solves these everyday parking headaches! CORE FEATURES Smart Countdown Timer • Visual ring timer shows time until next rate change • Color-coded alerts: Green (safe) → Orange (warning) → Red (urgent) • Advance notifications ensure you never overpay Flexible Billing Rules • Pre-configured templates for common parking lots • Customize free duration, billing cycles, and rates • Real-time cost estimates keep you informed Quick Spot Recording • Capture photos of your parking spot and surroundings • Save payment QR codes for fast checkout • Photos stored locally, won't clutter your camera roll Dynamic Island & Lock Screen • Live Activities on Dynamic Island (iPhone 14 Pro+) • Lock Screen widgets show time without unlocking • Home Screen widgets for at-a-glance tracking WHO IS IT FOR? • Budget-conscious drivers: Maximize free time, avoid surprise fees • Forgetful parkers: Never lose your car again • Frequent parkers: Perfect for malls, airports, hospitals WHAT MAKES IT SPECIAL • Minimalist design, intuitive interface • Privacy-first: All data stored locally • No registration required, ready to use instantly Park smarter. Save money. Save time.

Screenshots

ParkTimer4 screens

Verdict

The call

The clearest difference is review sentiment: Wadokei57 Astronomical clock at 100% against ParkTimer's 84%. Wadokei57 Astronomical clock also leads on device support (3 vs 1) and iOS requirement (15.6 vs 17.0). ParkTimer's advantage is price ($0.99 vs $3.99). On update cadence, ads, in-app purchases and monetization model 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

Wadokei57 Astronomical clock costs $3.99 and ParkTimer $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Wadokei57 Astronomical clock ships an update every 5 days, ParkTimer every 8 days. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
Wadokei57 Astronomical clock versus ParkTimer: the parameters behind the verdict, then further details
ParameterWadokei57 Astronomical clockParkTimer
Price$3.99$0.99 — better
Rating—4.0 (2 ratings) — better
Positive reviews100.0% of reviews — better84.4% of reviews
Number of ratings—2 — better
Update frequencyEvery 5 days — betterEvery 8 days
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size4 MB5 MB
Age rating4+4+
DeveloperShinichi Sekiguchi蕴涛 李

Customer experience

Wadokei57 Astronomical clock

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

ParkTimer

All ratings2 ratings
Positive50.0%
Neutral50.0%
Negative0.0%
Written reviews32 reviews
Positive84.4%
Neutral3.1%
Negative12.5%

In-app purchases

None

Wadokei57 Astronomical clock

No in-app purchases

None

ParkTimer

No in-app purchases

Questions

Is Wadokei57 Astronomical clock free?
Wadokei57 Astronomical clock costs $3.99, with no in-app purchases.
Is ParkTimer free?
ParkTimer costs $0.99, with no in-app purchases.
Do Wadokei57 Astronomical clock or ParkTimer have ads?
Neither Wadokei57 Astronomical clock nor ParkTimer shows ads.
Which is updated more often, Wadokei57 Astronomical clock or ParkTimer?
Wadokei57 Astronomical clock ships an update every 5 days, and ParkTimer every 8 days. Most recently, Wadokei57 Astronomical clock was updated on November 5, 2026 and ParkTimer on October 30, 2026.

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