Comparison

나노타임 vs Atto

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

나노타임

This app displays the precise server time of ticketing and course registration websites in milliseconds. It directly queries the target site's server, accounting for network delays and server clock discrepancies. Get accurate countdowns and alerts for important events without relying on your phone's standard clock.

Highlights
  • Millisecond-accurate server time display
  • Direct server queries, no central server
  • Accounts for network delay and server clock drift
  • Supports over 1,200 pre-registered sites
  • Custom site input and favorites
  • Audio and vibration alerts for target times
  • Picture-in-Picture (PiP) mode for concurrent browsing
Read full description

티켓팅과 수강신청은 내 폰 시계로 하는 게 아닙니다. 그 사이트의 서버 시계로 합니다. 나노타임은 예매처·수강신청 사이트의 서버가 지금 몇 시라고 말하는지 밀리초 단위로 읽어 띄웁니다. 다른 타이머와 달리 서버를 거치지 않아 정확합니다. ■ 오차를 숨기지 않습니다 「완전 정확」이라고 말하지 않습니다. 남은 오차를 ±00ms 로 그대로 띄우고, 값이 오래됐거나 그 서버의 시계가 흔들리면 시계가 흐려지면서 오차 폭이 넓어집니다. ■ 1,375곳 + 직접 입력 티켓팅·스포츠·수강신청·쇼핑·예약·해외까지, 실제로 찔러 보고 시각을 읽을 수 있는 곳만 담았습니다. 목록에 없으면 주소를 직접 치면 되고, 별을 눌러 즐겨찾기에 남길 수 있습니다. ■ 정각을 소리와 진동으로 알려줍니다 10초 전부터 1초마다 신호가 오고, 3초 전부터는 리듬이 바뀝니다. 화면을 보고 있지 않아도 됩니다. ■ 브라우저를 쓰는 동안에도 시계가 돕니다 예매 페이지를 띄운 채 작은 창(PiP)으로 서버 시계를 봅니다. 앱을 나가도 시계는 멈추지 않습니다. ■ 리허설 목표를 10초 뒤로 세우고 진짜 서버 시계로 한 판 돌려봅니다. 누른 순간이 아니라 그 클릭이 서버에 닿는 시각으로 채점합니다. ■ 자동 클릭·매크로는 없습니다 시각만 보여줍니다. 로그인도, 회원가입도, 예매 화면도 앱 안에 없습니다.

About

Atto

Features
Read full description

A ticket drop is decided in milliseconds, not seconds. The queue opens on the booking server's clock, not your phone's. The two are usually tens to hundreds of milliseconds apart, and that gap decides your place in line. Atto reads the server's clock directly, and shows you how well it read it. Measuring server time An HTTP Date header only resolves to the second, so one read tells you ±500ms and no more. Atto probes at 137ms intervals so each request lands on a different phase inside the second. Once the offset narrows, it predicts when the server's second will roll over and aims at that edge. Twenty overlapping measurements fold the error down to the round trip. The error bar stays visible Instead of a label like "high accuracy" you get the measured figure: ±23ms. Sample count, rejected samples, best round trip, and how far this server runs from national standard time are all on screen. Cached responses get dropped When a CDN answers instead of the origin, the clock inside that response is frozen at the moment it was stored. Atto checks the Age and cache headers and keeps those responses out of the average. Device drift correction Your phone's oscillator runs seconds off per day. Atto measures the slope between syncs, extrapolates it to now, and re-syncs every two minutes while you wait. Picture in Picture Press Start and a Picture in Picture window floats above your other apps. Show a decreasing countdown or a corrected wall clock that advances toward your configured target, with three-digit milliseconds. Keep the timing in sight while using a booking app or webpage. Haptics and sound Taps begin at the lead time you set and end with one hard hit at zero. The whole pattern goes to Core Haptics up front rather than a timer, so zero does not move even if the screen stutters. Sound is optional and plays through the silent switch. Practice mode A recommended lead time is somebody else's number. Measure the gap between the buzz and your tap actually registering, then apply your own median. Time sources Over 300 sources across 14 regions, including Ticketmaster, AXS, StubHub, Interpark, e+, tixCraft and Damai, plus course registration sites and sneaker drops. Standard-time servers like NIST, NPL, PTB, NICT and KRISS are there too, and you can type any address yourself. Free and paid Everything that decides whether you get the ticket is free: full sync accuracy, drift correction, the on-screen countdown, haptics, every time source, practice mode. One rewarded ad floats a single countdown in a PiP window. A one-time purchase removes ads and keeps PiP unlocked. It is not a subscription. Reading a clock takes one HEAD request. Atto never asks for an account and takes no part in the booking itself. English, 한국어, 日本語

Screenshots

나노타임4 screens
Atto4 screens

Verdict

The call

The clearest difference is in-app purchases: 나노타임 at none against Atto's 1. On price, update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Atto sells 1 one-off in-app purchase. 나노타임 asks for nothing beyond the download.

UpkeepUpdate frequency

나노타임 ships an update every 2 days, Atto every 3 days. The most recent releases landed on October 5, 2026 and October 10, 2026 respectively.

Scorecard1 real difference · 7 level
나노타임 versus Atto: the parameters behind the verdict, then further details
Parameter나노타임Atto
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyEvery 2 days — betterEvery 3 days
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size62 MB11 MB
Age rating4+4+
DeveloperNemo factoryBeomjin In

In-app purchases

None

나노타임

No in-app purchases

1 purchases

Atto

One-time1
  • Atto Pro$2.99

Questions

Is 나노타임 free?
나노타임 is free to download, with no in-app purchases.
Is Atto free?
Atto is free to download, with in-app purchases available.
Do 나노타임 or Atto have ads?
Both 나노타임 and Atto show ads.
Which is updated more often, 나노타임 or Atto?
나노타임 ships an update every 2 days, and Atto every 3 days. Most recently, 나노타임 was updated on October 5, 2026 and Atto on October 10, 2026.

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