# AtoDays vs Aqua_Smart

The clearest difference is price: AtoDays at Free against Aqua_Smart's $2.99. Aqua_Smart's advantage is in-app purchases (none vs 1) and ads (none vs shown). On update cadence and device support there is nothing between them.

AtoDays is free to download; Aqua_Smart costs $2.99 up front. AtoDays sells 1 one-off in-app purchase. Aqua_Smart asks for nothing beyond the download.

AtoDays ships an update every 6 weeks, Aqua_Smart every 2 months. The most recent releases landed on September 24, 2026 and May 16, 2026 respectively.

## The numbers

| Metric | AtoDays | Aqua_Smart |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.3 (4 ratings)](https://appshunter.io/ios/app/atodays-countdown-days-widget/id1476187457/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 38 MB |
| Requires iOS | 26.0 | **12.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shota Yamashita](https://appshunter.io/developer/535161626) | [kazunori ueda](https://appshunter.io/developer/1415280956) |

## What reviewers say

### AtoDays

[App page](https://appshunter.io/ios/app/atodays-countdown-days-widget/id1476187457)

Track upcoming events and anniversaries with a simple countdown. Get instant updates with home and lock screen widgets, and receive timely notifications. Seamlessly import events from your calendar for automatic tracking.

**Highlights:** Automatic countdown to any date, Customizable notifications, Repeat event settings, Calendar event import, Home & Lock Screen widgets, iCloud data backup

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Plan | $14.99 | one-time |


### Aqua_Smart

[App page](https://appshunter.io/ios/app/aqua-smart/id1503941316)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AtoDays free?

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

### Is Aqua_Smart free?

Aqua_Smart costs $2.99, with no in-app purchases.

### Do AtoDays or Aqua_Smart have ads?

AtoDays shows ads; Aqua_Smart does not.

### Which is updated more often, AtoDays or Aqua_Smart?

AtoDays ships an update every 6 weeks, and Aqua_Smart every 2 months. Most recently, AtoDays was updated on September 24, 2026 and Aqua_Smart on May 16, 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.*