# Age Calculator vs UnitDeck

The clearest difference is in-app purchases: Age Calculator at none against UnitDeck's 1. Age Calculator also leads on iOS requirement (12.0 vs 17.0). UnitDeck's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 18 months). On price and device support there is nothing between them.

Both are free to download. UnitDeck sells 1 one-off in-app purchase. Age Calculator asks for nothing beyond the download.

Age Calculator ships an update every 18 months, UnitDeck every 2 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Age Calculator | UnitDeck |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (14 ratings)](https://appshunter.io/ios/app/age-calculator-birthday/id1347235221/reviews)** | — |
| Number of ratings | **14** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Every 2 weeks** |
| Monetization | Ad-supported | — |
| Size | 12 MB | 3 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SDG CODE DOO NIS](https://appshunter.io/developer/1343251532) | [建辉 刘](https://appshunter.io/developer/6790622804) |

## What reviewers say

### Age Calculator

[App page](https://appshunter.io/ios/app/age-calculator-birthday/id1347235221)

Easily calculate your precise age in years, months, and days. This flexible and user-friendly tool provides real-time results and works seamlessly across all supported devices.

**Highlights:** Calculate age in years, months, days, Real-time results, Flexible design, Easy to use, Works on all devices

**Features:** macOS Compatibility

**In-app purchases:** none


### UnitDeck

[App page](https://appshunter.io/ios/app/unitdeck-work-unit-converter/id6792440865)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| UnitDeck Pro – Lifetime | $3.99 | one-time |


## Frequently asked questions

### Is Age Calculator free?

Age Calculator is free to download, with no in-app purchases.

### Is UnitDeck free?

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

### Do Age Calculator or UnitDeck have ads?

Age Calculator shows ads; UnitDeck does not.

### Which is updated more often, Age Calculator or UnitDeck?

Age Calculator ships an update every 18 months, and UnitDeck every 2 weeks. Most recently, Age Calculator was updated on October 24, 2026 and UnitDeck on October 25, 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.*