# VOF Solver vs PDFToolbox

The clearest difference is price: PDFToolbox at Free against VOF Solver's $0.99. PDFToolbox also leads on rating (5.0 vs 3.5) and update cadence (every 7 months vs every 36 months). VOF Solver's advantage is in-app purchases (none vs 3) and ratings volume (4 vs 1). On ads and device support there is nothing between them.

PDFToolbox is free to download; VOF Solver costs $0.99 up front. PDFToolbox sells 3 in-app purchases, starting at $0.99 per 7 days. VOF Solver asks for nothing beyond the download.

PDFToolbox holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

VOF Solver ships an update every 36 months, PDFToolbox every 7 months. The most recent releases landed on October 23, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | VOF Solver | PDFToolbox |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.5 (4 ratings)](https://appshunter.io/ios/app/vof-solver/id553282872/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/pdftoolbox-converterwatermark/id6744648102/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 7 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 1 MB | 8 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [admaDIC Rainer Schwarze & Annett Schwarze GbR](https://appshunter.io/developer/553282875) | [钊辰 王](https://appshunter.io/developer/1791406641) |

## What reviewers say

### VOF Solver

[App page](https://appshunter.io/ios/app/vof-solver/id553282872)

This app assists players in the Voltorb Flip mini-game within Pokémon HeartGold and SoulSilver. It calculates optimal moves to minimize risk and maximize rewards by analyzing row and column sums.

**Highlights:** Set row and column sums, Displays progress and solutions, Real-time risk assessment, Color-coded risk indicators, Filters and updates risk levels, Optimized for speed and memory

**Features:** Vision Pro support

**In-app purchases:** none


### PDFToolbox

[App page](https://appshunter.io/ios/app/pdftoolbox-converterwatermark/id6744648102)

This app offers a suite of tools for local PDF processing, including converting PDFs to images and vice versa, adding text watermarks, and encrypting/decrypting documents with passwords. It prioritizes user privacy by performing all operations on the device without internet access.

**Highlights:** Convert PDF to Image (JPG, PNG, GIF), Convert Image to PDF, Add custom text watermarks, Encrypt PDFs with passwords, Remove PDF password protection, Batch export and multi-image processing

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $0.99 | per 7 days |
| Yearly | $9.99 | per year |
| Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is VOF Solver free?

VOF Solver costs $0.99, with no in-app purchases.

### Is PDFToolbox free?

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

### Which has better reviews, VOF Solver or PDFToolbox?

PDFToolbox is rated higher. VOF Solver averages 3.5 out of 5 from 4 ratings, while PDFToolbox averages 5.0 from 1 ratings.

### Do VOF Solver or PDFToolbox have ads?

Neither VOF Solver nor PDFToolbox shows ads.

### Which is updated more often, VOF Solver or PDFToolbox?

VOF Solver ships an update every 36 months, and PDFToolbox every 7 months. Most recently, VOF Solver was updated on October 23, 2026 and PDFToolbox on October 13, 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.*