# Countdown & Calendar vs Builder Pro

The clearest difference is in-app purchases: Builder Pro at none against Countdown & Calendar's 1. Builder Pro also leads on update cadence (every 4 days vs every 65 months) and device support. On price and iOS requirement there is nothing between them.

Both are free to download. Countdown & Calendar sells 1 one-off in-app purchase. Builder Pro asks for nothing beyond the download.

Countdown & Calendar ships an update every 65 months, Builder Pro every 4 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Countdown & Calendar | Builder Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | Every 65 months | **Every 4 days** |
| Size | 66 MB | 7 MB |
| Requires iOS | **16.4** | 17.6 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Thieu Khue](https://appshunter.io/developer/1554439862) | [iCubemedia Inc.](https://appshunter.io/developer/453286185) |

## What reviewers say

### Countdown & Calendar

[App page](https://appshunter.io/ios/app/countdown-and-calendar/id1554439860)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime Pro | $4.99 | one-time |


### Builder Pro

[App page](https://appshunter.io/ios/app/builder-pro-construction-calc/id6792803672)

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

**In-app purchases:** none


## Frequently asked questions

### Is Countdown & Calendar free?

Countdown & Calendar is free to download, with in-app purchases available.

### Is Builder Pro free?

Builder Pro is free to download, with no in-app purchases.

### Which is updated more often, Countdown & Calendar or Builder Pro?

Countdown & Calendar ships an update every 65 months, and Builder Pro every 4 days. Most recently, Countdown & Calendar was updated on October 10, 2026 and Builder Pro on October 7, 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.*