Atto — Ticket Drop Timer

Atto — Ticket Drop Timer

Millisecond onsale countdown

0 ratings
9 reviews
Free
In-App PurchasesWith Ads

Details

Released
September 16, 2026
Updated
October 16, 2026

Features

Atto — Ticket Drop Timer screenshot #1 for iPhone
Atto — Ticket Drop Timer screenshot #2 for iPhone
Atto — Ticket Drop Timer screenshot #3 for iPhone
Atto — Ticket Drop Timer screenshot #4 for iPhone
Atto — Ticket Drop Timer screenshot #5 for iPhone
Atto — Ticket Drop Timer screenshot #6 for iPhone
Atto — Ticket Drop Timer screenshot #7 for iPhone
🖼️Get Icon
Icons↘︎

About

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.

✓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
Show original description

What's New in Atto

1.0.5

October 16, 2026

Setting the time and reminders got simpler. • Tap the clock for a time-only picker; a time that has passed today becomes tomorrow • Turn on a reminder from the bell and choose the exact date and time, and notification or alarm. Change the time and the reminder moves with it • New home-screen widget with your target time, the time left and the next reminder • Interpark and NOL Ticket now sync to the booking server's clock for better accuracy • The top menu is now icons only

More
1

Subscriptions & In-App Purchases

$1.99

Atto Pro

Removes ads. Island and Lock Screen stay unlocked.

User reviews

편하게 아주 쓰기 좋은 타이머

이걸로 티케팅 하거나 선착순 구매할때 pip모드로 상황에 맞게 시간대도 세팅가능해서 아주 편리해요 ~!

뮤지컬 피켓팅 하시는 분들 이거 꼭 받으세요

인기 뮤지컬은 진짜 1초만 늦어도 포도알 구경도 못하잖아요. 모니터 옆에 폰 세워두고 이거 띄워놓으면 마음의 안정이 옵니다. 소수점 단위까지 세밀하게 설정할 수 있어서 본인만의 타이밍 잡기에 최적화되어 있어요. 배터리 소모도 생각보다 적어서 장시간 켜둬도 부담 없네요.

기차표 예매할 때 초단위 확인하기 딱이에요

명절이나 주말에 기차표 구할 때마다 전쟁인데 이거 쓰고 나서부터는 실패한 적이 거의 없어요. 코레일 시간 맞춰서 켜두면 정확하게 서버 타임 따라가니까 너무 든든해요. UI가 심플해서 나이 있으신 분들도 쓰기 편할 것 같아요. 주변 지인들한테도 벌써 소문냈습니다.

티켓팅 성공하고 싶어서 받았는데 진짜 좋네요

공연 티켓팅할 때마다 초단위가 안 보여서 맨날 실패했거든요. 근데 이거 켜놓고 하니까 확실히 타이머가 정확해서 그런지 진입 타이밍 잡기가 훨씬 수월해졌어요. 화면 한쪽에 띄워두고 보기에 디자인도 깔끔하고 거슬리지 않아서 대만족입니다. 덕분에 이번에 원하던 좌석 잡았어요.

新作スニーカーの抽選販売でやっと勝てました

いつも数秒遅れて買えなかった限定スニーカーの販売開始に合わせて使ってみました。ミリ秒単位まで意識できるので、ラグを計算してクリックする感覚が掴みやすいです。設定もシンプルで使いやすいし、動作も軽いのでスマホが重くなる心配もなくて助かってます。

Response from developer

レビューありがとうございます!限定スニーカーの販売、無事に買えておめでとうございます🎉 ミリ秒まで見えることでタイミングの感覚を掴みやすいと言っていただけて、とても嬉しいです。これからも軽くてシンプルなまま、より使いやすく磨いていきます。次の販売でもお役に立てますように✨

Developer apps

FAQ

What is Atto's primary function?

Atto is designed to provide millisecond-accurate countdowns for time-sensitive events, such as ticket drops. It synchronizes with server clocks rather than your device's internal clock to ensure precision.

How does Atto achieve millisecond accuracy?

Atto probes server clocks at precise intervals and analyzes HTTP Date headers to calculate and display the exact offset. It corrects for device drift and filters out cached responses to maintain accuracy.

Can I use Atto while browsing other apps?

Yes, Atto features a Picture-in-Picture mode that allows a countdown window to float above other applications. This ensures you can keep track of time while navigating booking sites or other apps.

Does Atto have ads?

Yes, Atto contains advertisements. A rewarded ad can be watched to float a single countdown in a PiP window.

What are the pricing options for Atto?

The core features of Atto, including full sync accuracy, drift correction, and access to all time sources, are free. A one-time purchase is available to remove ads and unlock the Picture-in-Picture functionality permanently.

How often is Atto updated?

The latest version of Atto is 1.0.4, which was last updated on October 5, 2026. Updates typically occur to improve performance and add new features.

What devices does Atto support?

Atto is currently supported on iPhones. It is rated for ages 4 and up.

Can I add custom time sources to Atto?

Yes, in addition to over 300 pre-loaded sources, Atto allows you to type in any server address yourself to use as a time source.