# Tick Sync: Watch Time Sync — Radio·Background BLE·Multi-NTP

> Radio·Background BLE·Multi-NTP (iPhone/iPad app by JIFENG LUO.)

- Source: https://appshunter.io/ios/app/tick-sync-watch-time-sync/id6795579305 (this page in markdown: same URL + `.md`)
- Developer: [JIFENG LUO](https://appshunter.io/developer/6795579307)
- Category: Utilities
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 17.0 · 5 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-08-06
- Data updated: 2026-08-25
- User reviews in markdown: https://appshunter.io/ios/app/tick-sync-watch-time-sync/id6795579305/reviews.md

## What is Tick Sync?

When standard time radio signals do not reach your area, or walls and interference prevent your watch from receiving them—Tick Sync provides another path to the correct time.

Start with radio-controlled watch assistance. Place the watch near the built-in speaker of your iPhone or iPad and begin manual reception. Tick Sync generates time codes for JJY 40/60, WWVB, MSF, DCF77, and BPC, helping the watch attempt synchronization over a very short distance.

For explicitly compatible Bluetooth watches, pair and connect the watch, wait until it is ready to sync, and then send the current local time manually.

With Advanced Features, Tick Sync can maintain an eligible Bluetooth connection in the background. When the watch reconnects and becomes ready, Tick Sync normally obtains a fresh NTP correction and sends the time automatically, reducing the need to open the app for every sync. Background timing is determined by iOS or iPadOS and watch connection events rather than an exact schedule.

Your time source is not limited to the device’s system clock. Free Single NTP mode queries a server you choose. Multi-NTP mode compares at least three independent sources, finds a majority-agreed time range, rejects inconsistent responses, and displays estimated uncertainty.

HIGHLIGHTS
• Very-short-range JJY 40/60, WWVB, MSF, DCF77, and BPC radio-controlled watch assistance
• Manual and background automatic Bluetooth time sync for explicitly compatible watches
• System Time, Single NTP, and Multi-NTP sources
• NTP server management, optional location preselection, outlier rejection, and uncertainty estimates
• Watch battery level display
• No account required

Radio assistance, manual Bluetooth time sync, System Time, and Single NTP are free. Background automatic Bluetooth sync and Multi-NTP features require an auto-renewing annual Advanced Features subscription.

Tick Sync is an independent utility and is not affiliated with any watch manufacturer. Bluetooth compatibility depends on the watch model and firmware, while background operation depends on iOS or iPadOS and watch connection events. A successful Bluetooth write does not guarantee that the watch applied or displayed the new time.

An iPhone or iPad does not transmit a normal 40–77.5 kHz longwave broadcast. Radio-assisted results vary with the device, watch hardware, volume, placement, and interference. Always verify the final time independently before relying on it.

Terms of Use (Apple Standard EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Supplemental Terms of Use: https://ticksync.dishangti.com/legal/en/terms.html

Privacy Policy: https://ticksync.dishangti.com/legal/en/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Tick Sync Advanced | $1.99 | per year |



## Version history (last 4 releases)

### 1.1.2 — 2026-08-17

- Added the ICP registration link for mainland China.

### 1.1.1 — 2026-08-14

- Refined multi-source NTP calibration for improved accuracy and more stable uncertainty estimates.
- Added background pre-calibration and refresh after network changes to reduce waiting time.
- Fixed automatic, watch-initiated, and manual time sync.
- Disabling automatic sync no longer disconnects an active manual connection.
- Simplified Bluetooth screen text and improved calibration details.

### 1.1.0 — 2026-08-08

1. Added a five-bar battery indicator for supported Casio watch models.
2. Improved recognition of watch-initiated connections and background automatic time sync for more reliable connecting and disconnecting.
3. Refined the time display layouts on the Bluetooth and Radio screens, with clearer compatibility and pairing guidance.

### 1.0.2 — 2026-08-06

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-25.*