# Smooth Clock vs CUE! Time Signal Sync

The clearest difference is price: CUE! Time Signal Sync at Free against Smooth Clock's $0.99. CUE! Time Signal Sync also leads on update cadence (every 8 days vs every 11 months). Smooth Clock's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

CUE! Time Signal Sync is free to download; Smooth Clock costs $0.99 up front. CUE! Time Signal Sync sells 1 one-off in-app purchase. Smooth Clock asks for nothing beyond the download.

Smooth Clock ships an update every 11 months, CUE! Time Signal Sync every 8 days. The most recent releases landed on September 25, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Smooth Clock | CUE! Time Signal Sync |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 8 days** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 6 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Piet Jonas](https://appshunter.io/developer/288060167) | [TAKAO OGASAWARA](https://appshunter.io/developer/1895349758) |

## What reviewers say

### Smooth Clock

[App page](https://appshunter.io/ios/app/smooth-clock/id482921576)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### CUE! Time Signal Sync

[App page](https://appshunter.io/ios/app/cue-time-signal-sync/id6769318519)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Smooth Clock free?

Smooth Clock costs $0.99, with no in-app purchases.

### Is CUE! Time Signal Sync free?

CUE! Time Signal Sync is free to download, with in-app purchases available.

### Do Smooth Clock or CUE! Time Signal Sync have ads?

CUE! Time Signal Sync shows ads; Smooth Clock does not.

### Which is updated more often, Smooth Clock or CUE! Time Signal Sync?

Smooth Clock ships an update every 11 months, and CUE! Time Signal Sync every 8 days. Most recently, Smooth Clock was updated on September 25, 2026 and CUE! Time Signal Sync on September 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*