# CUE! Time Signal Sync vs Atto

The clearest difference is update cadence: Atto at every 4 days against CUE! Time Signal Sync's every 8 days. On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. CUE! Time Signal Sync sells 1 one-off in-app purchase and Atto 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, Atto every 4 days. The most recent releases landed on October 31, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | CUE! Time Signal Sync | Atto |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 8 days | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 6 MB | 11 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TAKAO OGASAWARA](https://appshunter.io/developer/1895349758) | [Beomjin In](https://appshunter.io/developer/1791890813) |

## What reviewers say

### 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 |


### Atto

[App page](https://appshunter.io/ios/app/atto-ticket-drop-timer/id6811104130)

This utility app precisely measures and displays server clock times for time-sensitive events like ticket drops. It offers advanced features to correct for device drift and ensure accurate countdowns, even while using other applications.

**Highlights:** Server clock synchronization, Millisecond precision countdown, Device drift correction, Picture-in-Picture mode, Haptic and sound alerts, Practice mode for timing, Supports over 300 time sources

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Atto Pro | $1.99 | one-time |


## Frequently asked questions

### Is CUE! Time Signal Sync free?

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

### Is Atto free?

Atto is free to download, with in-app purchases available.

### Do CUE! Time Signal Sync or Atto have ads?

Both CUE! Time Signal Sync and Atto show ads.

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

CUE! Time Signal Sync ships an update every 8 days, and Atto every 4 days. Most recently, CUE! Time Signal Sync was updated on October 31, 2026 and Atto on November 4, 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.*