# Solverror vs Image to PDF Pro

The clearest difference is in-app purchases: Solverror at none against Image to PDF Pro's 5. Image to PDF Pro's advantage is update cadence (every 2 weeks vs every 9 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Image to PDF Pro sells 5 in-app purchases, starting at $1.99 per 7 days. Solverror asks for nothing beyond the download.

Solverror ships an update every 9 months, Image to PDF Pro every 2 weeks. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Solverror | Image to PDF Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/image-to-pdf-pro-pdfast/id6753763233/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 49 MB | 79 MB |
| Requires iOS | 14.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Creamobile Bilisim Teknolojileri Limited Sirketi](https://appshunter.io/developer/857772718) | [Adrien Cens](https://appshunter.io/developer/1651501788) |

## What reviewers say

### Solverror

[App page](https://appshunter.io/ios/app/solverror/id6739931488)

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

**In-app purchases:** none


### Image to PDF Pro

[App page](https://appshunter.io/ios/app/image-to-pdf-pro-pdfast/id6753763233)

Effortlessly convert your photos into professional PDF documents. Import images, arrange them, add signatures, and share your creations securely. This app offers a simple, fast, and registration-free experience for all your PDF conversion needs.

**Highlights:** Instant photo to PDF conversion, Merge multiple images, Sign, rotate, and reorder images, Easy sharing options, Secure local storage, Registration-free

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FDFast Premium | $1.99 | per 7 days |
| PDFast Premium Monthly | $9.99 | per month |
| PDFast Pro Annual Discount | $24.99 | per year |
| Saver Pro Annual | $44.99 | per year |
| PDFast Premium lifetime | $9.99 | one-time |


## Frequently asked questions

### Is Solverror free?

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

### Is Image to PDF Pro free?

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

### Do Solverror or Image to PDF Pro have ads?

Neither Solverror nor Image to PDF Pro shows ads.

### Which is updated more often, Solverror or Image to PDF Pro?

Solverror ships an update every 9 months, and Image to PDF Pro every 2 weeks. Most recently, Solverror was updated on September 28, 2026 and Image to PDF Pro on October 5, 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.*