Comparison

Wadokei57 Astronomical clock vs HashForge

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

HashForge

Features
Read full description

Generate and verify cryptographic hashes right on your device — fast, clean, and completely offline. Type or paste any text, or pick a file, and get every common digest at once: MD5, SHA-1, SHA-256, SHA-384, and SHA-512. Tap any result to copy it. Checking a download or a signature? Paste the expected hash and see an instant match or mismatch. HOW IT WORKS Enter your text or choose a file and the hashes compute immediately. Copy the one you need with a tap, or drop an expected value into the verify bar to confirm two files or strings are identical. Recent hashes are saved so you can find them again. FEATURES - MD5, SHA-1, SHA-256, SHA-384, and SHA-512 in one view - Hash both text and files - Verify against an expected hash with a live match indicator - One-tap copy for any result - Recent history so nothing gets lost - Clean, calm interface built for quick checks PRO A one-time unlock adds an HMAC generator to sign messages with a secret key (MD5 through SHA-512), unlimited history instead of the most recent entries, and CSV export of your full hash log. Buy once and keep it forever — no subscription. PRIVACY Everything is computed on your device. No account, no sign-in, no tracking, and nothing ever leaves your phone.

Screenshots

HashForge4 screens

Verdict

The call

The clearest difference is price: HashForge at Free against Wadokei57 Astronomical clock's $3.99. Wadokei57 Astronomical clock's advantage is in-app purchases (none vs 1) and update cadence (every 5 days vs fortnightly). On ads 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

HashForge is free to download; Wadokei57 Astronomical clock costs $3.99 up front. HashForge sells 1 one-off in-app purchase. Wadokei57 Astronomical clock asks for nothing beyond the download.

UpkeepUpdate frequency

Wadokei57 Astronomical clock ships an update every 5 days, HashForge fortnightly. The most recent releases landed on October 8, 2026 and October 15, 2026 respectively.

Scorecard5 real differences · 3 level
Wadokei57 Astronomical clock versus HashForge: the parameters behind the verdict, then further details
ParameterWadokei57 Astronomical clockHashForge
Price$3.99Free — better
Positive reviews100.0% of reviews—
Update frequencyEvery 5 days — betterFortnightly
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.6 — better26.0
Further details — not scored
Size4 MB1 MB
Age rating4+4+
DeveloperShinichi Sekiguchi永 张

In-app purchases

None

Wadokei57 Astronomical clock

No in-app purchases

1 purchases

HashForge

One-time1
  • HashGenerator Pro$4.99

Questions

Is Wadokei57 Astronomical clock free?
Wadokei57 Astronomical clock costs $3.99, with no in-app purchases.
Is HashForge free?
HashForge is free to download, with in-app purchases available.
Do Wadokei57 Astronomical clock or HashForge have ads?
Neither Wadokei57 Astronomical clock nor HashForge shows ads.
Which is updated more often, Wadokei57 Astronomical clock or HashForge?
Wadokei57 Astronomical clock ships an update every 5 days, and HashForge fortnightly. Most recently, Wadokei57 Astronomical clock was updated on October 8, 2026 and HashForge on October 15, 2026.

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