Comparison

Rubber Clock vs Bathyal

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

Head to head
About

Rubber Clock

Design a personalized digital clock by inputting text or uploading an image. Create unique time displays, from pet-themed clocks to countdown timers for important events.

Highlights
  • Create custom digital clocks
  • Use text input for designs
  • Upload photos for clock faces
  • Design pet-themed clocks
  • Set countdown timers
  • Create bedside clocks
Features
Read full description

Initial release of Rubber Clock. Create your own digital clock by typing a sentence or uploading a favorite photo. Make a cozy pet clock, a countdown for a special day, or a relaxing bedside clock. Turn time into something that feels like yours.

About

Bathyal

Features
Read full description

Bathyal is a clepsydra — an ancient water clock — rebuilt for the deep sea. In the bathyal zone there is no day or night. No sunrise, no shadow, nothing to set a clock by. The only light is made by living things. Bathyal is the instrument that keeps time down there: a face of glowing concentric channels where every drop is a second, and time is material. Watch it work: • Each second forms as a drop at the heartbeat and joins the ring • A full ring of seconds distills into one minute — and pours, visibly, down into the next channel • Minutes pour into hours, hours into the day's two halves, days into months — at midnight the whole cascade runs at once • Once a year, the last drop of December sinks past the digits into the abyss, unmeasured Make it yours: • Solid bands or beaded drops, sweeping or pulsing motion • 24-hour or 12-hour time — 12-hour splits the hours at the meridian into a morning ring and an afternoon ring • Calendar rings for the month and year, or a Monday-first week ring whose weeks are spent, not kept • Run the midnight cascade demo any time from the settings On your wrist: • A full-screen water clock for Apple Watch — seconds, minutes, and hours in the same adjacent channels • Add Bathyal as a complication; the live rings sit on any face and rewrite themselves as the day moves. No two times look the same — that is the instrument, not a hand on a circle • Hold the Watch face for settings. Pulse or sweep, 12- or 24-hour time, and an optional Monday-first weekday ring. Hours, motion, and the week calendar also travel from the gear on iPhone On the Lock Screen: • Add Bathyal as a Lock Screen widget — live rings, a different pattern for every minute, the same figure as the Watch complication • Hours, motion, and the weekday ring follow from the gear Quiet by design: • Completely free, no accounts, no ads, no tracking — it never connects to anything • Works fully offline • Keeps the screen awake on a desk or bedside table If the instrument keeps good time for you, you can send a drop — a small tip — and the face answers with the benefactor tinctures: other colors of bioluminescence, and a single grain of sand set on the seabed of the dial. Drops become months.

Screenshots

Rubber Clock3 screens
Bathyal4 screens

Verdict

The call

The clearest difference is device support: Bathyal at 4 against Rubber Clock's 1. Bathyal also leads on iOS requirement (16.0 vs 18.4). On price, update cadence, ads and in-app purchases 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. Rubber Clock sells 3 one-off in-app purchases and Bathyal sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Rubber Clock ships an update every 5 days, Bathyal every 10 days. Both last shipped on November 5, 2026.

Scorecard2 real differences · 7 level
Rubber Clock versus Bathyal: the parameters behind the verdict, then further details
ParameterRubber ClockBathyal
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 5 days — betterEvery 10 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, Mac, Apple Watch — better
Requires iOS18.416.0 — better
Further details — not scored
Size111 MB4 MB
Age rating4+4+
Developer传河 张Stephen Zinn

In-app purchases

3 purchases

Rubber Clock

One-time3
  • Small Eraser Pack$0.99
  • Medium Eraser Pack$1.99
  • Large Eraser Pack$2.99
3 purchases

Bathyal

One-time3
  • Tip Small$1.99
  • Drop: The Benefactor's Drop$2.99
  • Large: A Current$9.99

Questions

Is Rubber Clock free?
Rubber Clock is free to download, with in-app purchases available.
Is Bathyal free?
Bathyal is free to download, with in-app purchases available.
Do Rubber Clock or Bathyal have ads?
Neither Rubber Clock nor Bathyal shows ads.
Which is updated more often, Rubber Clock or Bathyal?
Rubber Clock ships an update every 5 days, and Bathyal every 10 days. Most recently, Rubber Clock was updated on November 5, 2026 and Bathyal on November 5, 2026.

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