CUE! Time Signal Sync vs TimeSync
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CUE! Time Signal Sync
This app provides highly accurate time synchronization using NTP, offering visual and auditory cues for precise second-level timing. It's ideal for professionals who need to catch exact moments, such as during events, filming, or technical work.
- NTP-based time correction
- 57/58/59/00-second countdowns
- Signal sounds and haptics
- Voice announcements
- Landscape display mode
- Display dimmer and keep-awake mode
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Make every 00-second moment easier to catch. CUE! is a time signal app designed for timer setup and field time checks. With NTP-based time correction, 57/58/59/00-second countdowns, signal sounds, haptics, and voice announcements, CUE! helps you catch the exact 00-second moment. It is useful for temporary illumination timer panels, facility equipment, electrical work, lighting and audio systems, events, exhibitions, filming, streaming, stage work, live shows, store displays, and any situation where second-level timing matters. ■ CUE!’s Time Correction Logic CUE! is not a clock that simply displays the result of a single NTP request. NTP responses can vary depending on network routes, congestion, Wi-Fi, mobile networks, and device conditions. CUE! collects multiple NTP samples during startup and manual sync, checking each sample’s round-trip time (RTT) and time offset. Slow responses and offset outliers are filtered out. CUE! prioritizes stable samples. The selected NTP time is linked to the device’s monotonic clock at the moment it is received. After that, the in-app time display advances by adding elapsed monotonic time to the NTP reference. During automatic sync, CUE! may keep the previous NTP reference instead of applying a low-confidence result. This helps prevent sudden jumps caused by unstable network responses. ■ 57/58/59/00-Second Cues CUE! starts its countdown at 57 seconds every minute. 57 sec: 3 seconds before 58 sec: 2 seconds before 59 sec: 1 second before 00 sec: CUE! At 00 seconds, the time and cue display change color, making the exact moment easy to recognize visually. It helps when setting timer panels, checking lighting and audio timing, starting streams or recordings, managing events, and confirming 00-second timing in the field. ■ Sound, Haptics, and Voice CUE! can notify you at 57/58/59/00 seconds with signal sounds and haptics. Signal sound can be turned on or off. Use sound when allowed, or turn it off and rely on the display and haptics. Haptics use different patterns for warning seconds and the exact 00-second cue. Haptics can also be turned on or off. Voice announcements help you understand timing even when your iPhone is in your pocket. Choose announcements every 1 minute, 15 minutes, 30 minutes, or 1 hour. CUE! supports English, Japanese, Simplified Chinese, Traditional Chinese, and Korean. Other languages fall back to English. ■ Landscape Display Turn your iPhone sideways to use a larger clock display. This is useful when placing your iPhone on a stand, near a lighting console, audio mixer, or timer panel. ■ Field Features CUE! includes: ・Display dimmer ・Keep-awake mode ・Rear flashlight control ・Cue color toggle ・Haptics ON/OFF ・Signal sound ON/OFF ・Portrait and landscape layouts ・Remove ads option ■ Recommended For ・Temporary illumination timer setup ・Facility equipment time setting ・Electrical work and field timing ・Lighting and audio timing checks ・Events, exhibitions, stages, and live shows ・Streaming, recording, and filming start cues ・Store display and timer control checks ・Checking every 00-second moment clearly ・Using a clock that always shows seconds ・NTP-based time checking CUE! is a field time signal app that supports the exact “now.” ■ Free to Use CUE! is free to download. Banner ads are shown in the app. To avoid interrupting important timing moments, CUE! does not use interstitial ads. You can remove banner ads with an in-app purchase. ■ Notes CUE! uses public NTP servers to support its in-app time display. However, differences may occur due to network conditions, device status, screen rendering, audio output, haptics, speaker latency, or Bluetooth device latency. CUE! does not guarantee millisecond-level synchronization, measurement accuracy, broadcast timing, or legal proof of time. However, it can be a useful support tool for timer setup, 00-second alignment, and second-level time checks in field environments.
TimeSync
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TimeSyncは、NTP(Network Time Protocol)サーバーと通信して正確な時刻を取得し、お使いの端末との時刻差を表示するシンプルな時計アプリです。 ■ 主な機能 ・NTPサーバーとの通信による正確な時刻取得 ・端末の時刻とのズレをミリ秒単位で表示 ・通信の往復遅延(RTT)を表示 ・ワンタップで再同期 ■ 4種類のデザインから選べる 設定画面から、お好みの見た目に切り替えられます。 ・Cosmic: 宇宙と地球をモチーフにしたダークテーマ ・Pastel: 淡い色使いの明るいテーマ ・Cyber: ターミナル風の緑基調テーマ ・Analog: 実際に針が動くアナログ時計 ■ 多言語対応 日本語・English・简体中文・繁體中文・한국어・Español・Français・Deutschに対応しています。 無料でお使いいただけます(広告表示あり)。広告を非表示にするApp内課金もご用意しています。
Screenshots
Verdict
The clearest difference is update cadence: TimeSync at every 2 days against CUE! Time Signal Sync's every 8 days. On price, ads, in-app purchases and device support 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
Both are free to download. CUE! Time Signal Sync sells 1 one-off in-app purchase and TimeSync sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
CUE! Time Signal Sync ships an update every 8 days, TimeSync every 2 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.
| Parameter | CUE! Time Signal Sync | TimeSync |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 8 days | Every 2 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.6 | 16.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | TAKAO OGASAWARA | YOSHITADA SAITO |
In-app purchases
CUE! Time Signal Sync
- Remove Ads$2.99
TimeSync
- 広告削除$0.49









