# 오아 IoT vs Age Calculator

The clearest difference is ads: 오아 IoT at none against Age Calculator's shown. 오아 IoT also leads on iOS requirement (12.4 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

오아 IoT ships an update every 3 weeks, Age Calculator every 2 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | 오아 IoT | Age Calculator |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 weeks | **Every 2 weeks** |
| Monetization | — | Ad-supported |
| Size | 50 MB | 55 MB |
| Requires iOS | **12.4** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OA Co.,Ltd](https://appshunter.io/developer/1529557075) | [minjung seo](https://appshunter.io/developer/1613470841) |

## What reviewers say

### 오아 IoT

[App page](https://appshunter.io/ios/app/iot/id1583900845)

**Features:** macOS Compatibility

**In-app purchases:** none


### Age Calculator

[App page](https://appshunter.io/ios/app/age-calculator-horoscopes/id6449746120)

Calculate your precise age in various formats, including years, months, days, and even seconds. Track upcoming birthdays with a D-Day countdown and manage contacts' special dates. Discover your zodiac sign and receive daily horoscopes.

**Highlights:** Accurate age calculation in multiple units, Supports international, Korean, and Western age formats, D-Day countdown for upcoming birthdays, Birthday manager for friends and family, Zodiac sign identification, Daily horoscope updates

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

**In-app purchases:** none


## Frequently asked questions

### Is 오아 IoT free?

오아 IoT is free to download, with no in-app purchases.

### Is Age Calculator free?

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

### Do 오아 IoT or Age Calculator have ads?

Age Calculator shows ads; 오아 IoT does not.

### Which is updated more often, 오아 IoT or Age Calculator?

오아 IoT ships an update every 3 weeks, and Age Calculator every 2 weeks. Most recently, 오아 IoT was updated on November 3, 2026 and Age Calculator on November 3, 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.*