# How old is something vs BDT

The clearest difference is review sentiment: BDT at 100% against How old is something's 33%. BDT also leads on in-app purchases (none vs 1) and rating (5.0 vs 4.7). How old is something's advantage is price (Free vs $4.99) and update cadence (every 2 months vs every 36 months). On ads and device support there is nothing between them.

How old is something is free to download; BDT costs $4.99 up front. How old is something sells 1 one-off in-app purchase. BDT asks for nothing beyond the download.

BDT holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: How old is something has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 33% of How old is something's written reviews are positive against 100% of BDT's.

How old is something ships an update every 2 months, BDT every 36 months. The most recent releases landed on October 16, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | How old is something | BDT |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.7 (15 ratings)](https://appshunter.io/ios/app/how-old-is-something/id1437066430/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/bdt/id1556522369/reviews)** |
| Number of ratings | **15** | 3 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 36 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 4 MB | 44 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sebastian Bolling](https://appshunter.io/developer/1416824787) | [Jervis Thompson](https://appshunter.io/developer/1556522371) |

## What reviewers say

### How old is something

[App page](https://appshunter.io/ios/app/how-old-is-something/id1437066430)

Easily track the age of anything, from children and pets to devices. Display ages in years, months, and days directly on your home screen widgets or Apple Watch.

**Highlights:** Track age of people, pets, and devices, Display age in years, months, and days, Home screen widgets for quick access, Apple Watch compatibility, Simple and intuitive interface

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Add many somethings! | $0.99 | one-time |


### BDT

[App page](https://appshunter.io/ios/app/bdt/id1556522369)

Easily track all important dates with this iPhone companion. It displays upcoming birthdays from your contacts, showing ages and zodiac signs. Stay organized and never miss a celebration.

**Highlights:** View birthdays from contacts, Sort by birthdate, Highlight next upcoming birthday, Deep link to contacts, Display age and zodiac sign

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is How old is something free?

How old is something is free to download, with in-app purchases available.

### Is BDT free?

BDT costs $4.99, with no in-app purchases.

### Which has better reviews, How old is something or BDT?

BDT is rated higher. How old is something averages 4.7 out of 5 from 15 ratings, while BDT averages 5.0 from 3 ratings.

### Do How old is something or BDT have ads?

Neither How old is something nor BDT shows ads.

### Which is updated more often, How old is something or BDT?

How old is something ships an update every 2 months, and BDT every 36 months. Most recently, How old is something was updated on October 16, 2026 and BDT on October 4, 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.*