# MilliS vs Atto

The clearest difference is device support: MilliS at 3 against Atto's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. MilliS 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.

## The numbers

| Metric | MilliS | Atto |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | — | Every 4 days |
| Monetization | — | Free with in-app purchases |
| Size | 7 MB | 11 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Jonghyeok Lim](https://appshunter.io/developer/6788035432) | [Beomjin In](https://appshunter.io/developer/1791890813) |

## What reviewers say

### MilliS

[App page](https://appshunter.io/ios/app/millis/id6788035100)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MilliS Pro | $1.99 | 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 MilliS free?

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

### Is Atto free?

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

### Do MilliS or Atto have ads?

Both MilliS and Atto show ads.

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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.*