# TecSonics™ vs Image to PDF Converter

The clearest difference is in-app purchases: TecSonics™ at none against Image to PDF Converter's 2. Image to PDF Converter's advantage is update cadence (weekly vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Image to PDF Converter sells 2 in-app purchases, starting at $1.99 per 7 days. TecSonics™ asks for nothing beyond the download.

TecSonics™ ships an update every 6 months, Image to PDF Converter weekly. The most recent releases landed on October 25, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | TecSonics™ | Image to PDF Converter |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Size | 20 MB | 40 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Transmission Dynamics](https://appshunter.io/developer/1554066008) | [erhan bizden](https://appshunter.io/developer/1758639592) |

## What reviewers say

### TecSonics™

[App page](https://appshunter.io/ios/app/tecsonics/id6468250041)

**Features:** macOS Compatibility

**In-app purchases:** none


### Image to PDF Converter

[App page](https://appshunter.io/ios/app/image-to-pdf-converter-scans/id6749085643)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $1.99 | per 7 days |
| Annual | $29.99 | per year |


## Frequently asked questions

### Is TecSonics™ free?

TecSonics™ is free to download, with no in-app purchases.

### Is Image to PDF Converter free?

Image to PDF Converter is free to download, with in-app purchases available.

### Do TecSonics™ or Image to PDF Converter have ads?

Neither TecSonics™ nor Image to PDF Converter shows ads.

### Which is updated more often, TecSonics™ or Image to PDF Converter?

TecSonics™ ships an update every 6 months, and Image to PDF Converter weekly. Most recently, TecSonics™ was updated on October 25, 2026 and Image to PDF Converter on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*