eTCH Sync Time vs Bathyal
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
eTCH Sync Time
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eTCH is a new way to show the clock time...it's hard to explain, it's better to see it in action!
Bathyal
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Bathyal is a clepsydra โ an ancient water clock โ 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: โข Each second forms as a drop at the heartbeat and joins the ring โข A full ring of seconds distills into one minute โ and pours, visibly, down into the next channel โข Minutes pour into hours, hours into the day's two halves, days into months โ at midnight the whole cascade runs at once โข Once a year, the last drop of December sinks past the digits into the abyss, unmeasured Make it yours: โข Solid bands or beaded drops, sweeping or pulsing motion โข 24-hour or 12-hour time โ 12-hour splits the hours at the meridian into a morning ring and an afternoon ring โข Calendar rings for the month and year, or a Monday-first week ring whose weeks are spent, not kept โข Run the midnight cascade demo any time from the settings On your wrist: โข A full-screen water clock for Apple Watch โ seconds, minutes, and hours in the same adjacent channels โข 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 โ that is the instrument, not a hand on a circle โข 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: โข Add Bathyal as a Lock Screen widget โ live rings, a different pattern for every minute, the same figure as the Watch complication โข Hours, motion, and the weekday ring follow from the gear Quiet by design: โข Completely free, no accounts, no ads, no tracking โ it never connects to anything โข Works fully offline โข Keeps the screen awake on a desk or bedside table If the instrument keeps good time for you, you can send a drop โ a small tip โ 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
Verdict
The clearest difference is in-app purchases: eTCH Sync Time at none against Bathyal's 3. eTCH Sync Time also leads on iOS requirement (9.3 vs 16.0). Bathyal's advantage is update cadence (every 4 days vs monthly). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Bathyal sells 3 one-off in-app purchases. eTCH Sync Time asks for nothing beyond the download.
eTCH Sync Time ships an update monthly, Bathyal every 4 days. The most recent releases landed on September 9, 2026 and September 19, 2026 respectively.
| Parameter | eTCH Sync Time | Bathyal |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly | Every 4 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Requires iOS | 9.3 โ better | 16.0 |
| Further details โ not scored | ||
| Size | 1 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | GCtronic Sagl | Stephen Zinn |
In-app purchases
eTCH Sync Time
No in-app purchases
Bathyal
- Tip Small$1.99
- Drop: The Benefactor's Drop$2.99
- Large: A Current$9.99
Questions
Is eTCH Sync Time free?
Is Bathyal free?
Do eTCH Sync Time or Bathyal have ads?
Which is updated more often, eTCH Sync Time or Bathyal?
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