# Big Days vs ClockX

The clearest difference is ads: ClockX at none against Big Days's shown. ClockX also leads on update cadence (every 2 days vs every 4 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Big Days sells 2 one-off in-app purchases and ClockX sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Big Days ships an update every 4 months, ClockX every 2 days. The most recent releases landed on October 14, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Big Days | ClockX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (590 ratings)](https://appshunter.io/ios/app/big-days-event-countdown/id940109775/reviews)** | — |
| Number of ratings | **590** | — |
| Positive reviews | 91.4% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 81 MB | 36 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [astrovicApps](https://appshunter.io/developer/522189685) | [IP Strategy UG (Haftungsbeschrankt)](https://appshunter.io/developer/1821713321) |

## What reviewers say

### Big Days

[App page](https://appshunter.io/ios/app/big-days-event-countdown/id940109775)

Easily track important dates with a stylish and lightweight countdown app. Set reminders for appointments, anniversaries, birthdays, and more. Customize with your own photos or find free images online, and receive notifications for upcoming events.

**Highlights:** Countdown to events, Track days elapsed, Customizable event images, Online image search (Pixabay), Event notifications/alarms, Favorite event display, Share events

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Widget Pack | $2.99 | one-time |
| Big Days Pro | $3.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🎨 Customizable backgrounds
- 📅 Helpful for tracking events
- 🎉 Exciting countdown feature
- 📷 Option to add images

**What reviewers complain about**

- 🔒 Limited free events
- 💰 Paywall for more features
- 🐛 Occasional crashes or glitches
- 📤 Difficulty transferring data to new devices

**Reported bugs**

- Login screen freezes
- Images disappearing from events
- Constant ads interrupting usage

**Requested features**

- Unlimited free events
- Recurring event option
- Customizable countdown styles
- Ability to reorder events
- Sync across multiple devices


### ClockX

[App page](https://appshunter.io/ios/app/clockx-time-management/id6786281848)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ClockX Premium | $0.99 | per month |


## Frequently asked questions

### Is Big Days free?

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

### Is ClockX free?

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

### Do Big Days or ClockX have ads?

Big Days shows ads; ClockX does not.

### Which is updated more often, Big Days or ClockX?

Big Days ships an update every 4 months, and ClockX every 2 days. Most recently, Big Days was updated on October 14, 2026 and ClockX on October 5, 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.*