# Ancient Script Identifier vs DuctSizer

The clearest difference is in-app purchases: Ancient Script Identifier at none against DuctSizer's 1. Ancient Script Identifier also leads on iOS requirement (15.1 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. DuctSizer sells 1 one-off in-app purchase. Ancient Script Identifier asks for nothing beyond the download.

## The numbers

| Metric | Ancient Script Identifier | DuctSizer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 2 weeks |
| Size | 45 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ENGIN KUTUK](https://appshunter.io/developer/1823697018) | [Alican Basak](https://appshunter.io/developer/1871159079) |

## What reviewers say

### Ancient Script Identifier

[App page](https://appshunter.io/ios/app/ancient-script-identifier/id6760339565)

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

**In-app purchases:** none


### DuctSizer

[App page](https://appshunter.io/ios/app/ductsizer-duct-calculator/id6788267429)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DuctSizer Pro | $9.99 | one-time |


## Frequently asked questions

### Is Ancient Script Identifier free?

Ancient Script Identifier is free to download, with no in-app purchases.

### Is DuctSizer free?

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

### Do Ancient Script Identifier or DuctSizer have ads?

Neither Ancient Script Identifier nor DuctSizer shows ads.

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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.*