Comparison

VOF Solver vs PDFToolbox

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VOF Solver

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
Read full description

VOF Solver finds solutions for the voltorb flip game of pokemon heartgold and soulsilver and helps chosing the cell with the lowest risk of losing the game. Features: o Set the sums of coins and orbs for the rows and columns o Shows progress and the number of solutions found so far o Stop the search any time if you like o Quickly browse through the solutions o Cells are colored: green for low risk, red for high risk o Filters solutions and updates risk colors: Set the cell's coins in the solution matrix as you flip the cells in the actual game o Optimized for speed and memory usage o Small app size for quick download o Create sample data to quickly test the app

About

PDFToolbox

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
Read full description

PDF Toolbox is a powerful PDF processing tool that works entirely on your device, with no internet connection required, ensuring your file privacy and security. We provide comprehensive PDF handling solutions that allow you to easily convert, protect, and customize your PDF documents. Key Features PDF to Image Conversion Transform PDF documents into high-quality images with multiple customization options: • Image format selection: JPG, PNG, or GIF • Result type: Multiple separate images or one large image • Color modes: Color, grayscale, or black & white • Quality levels: Low, medium, high to meet different needs • Batch export: Export all pages with one tap Image to PDF Conversion Easily merge multiple images into PDF documents: • Multi-image processing: Select multiple images simultaneously • Flexible conversion: Merge into a single PDF or generate multiple separate PDFs • Color processing: Color mode, grayscale mode, black & white mode • Source selection: Choose images from your photo library or file system Add Watermark Add professional text watermarks to your PDFs: • Custom watermark text • Adjustable font size • Transparency settings (0-100%) • Rotation angle (0-360°) • Horizontal/vertical spacing control • Automatically applied to all PDF pages Add Password Protect important documents with password encryption: • Secure encryption: Using standard PDF encryption technology • Simple operation: Add password protection with one tap • Secure storage: Encrypted files saved locally only Remove Password Easily remove encryption from PDFs with known passwords: • Enter the correct password to unlock PDF documents • Remove password protection with one tap • Preserve all formatting and content of the original document Our Advantages • Completely local processing: All file processing is performed locally on your device, never uploaded to any servers • Privacy protection: Your document contents remain only on your device • Efficient processing: Optimized processing engine provides fast conversion experience • Rich options: Meet various customization needs for professional users • High-quality output: Maintain the clarity and formatting of original documents Use Cases • Students: Convert study materials, course slides, and e-books • Professionals: Process work documents, add company watermarks or password protection • Designers: Convert PDF designs to images for editing or sharing • Teachers: Add watermarks to teaching materials to prevent unauthorized distribution • Anyone who needs simple, efficient PDF file processing Download PDF Toolbox now and experience professional-grade PDF processing features! END USER LICENSE AGREEMENT (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ PRIVACY POLICY: https://jiw.github.io/PDFToolbox/privacy_policy_en.html

Screenshots

VOF Solver2 screens
PDFToolbox4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard7 real differences · 3 level
VOF Solver versus PDFToolbox: the parameters behind the verdict, then further details
ParameterVOF SolverPDFToolbox
Price$0.99Free — better
Rating3.5 (4 ratings)5.0 (1 ratings) — better
Positive reviews57.1% of reviews—
Number of ratings4 — better1
Update frequencyEvery 36 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS13.0 — better15.0
Further details — not scored
Size1 MB8 MB
Age rating4+4+
DeveloperadmaDIC Rainer Schwarze & Annett Schwarze GbR钊辰 王

Customer experience

VOF Solver

All ratings4 ratings
Positive25.0%
Neutral75.0%
Negative0.0%
Written reviews7 reviews
Positive57.1%
Neutral28.6%
Negative14.3%

PDFToolbox

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

VOF Solver

No in-app purchases

3 purchases

PDFToolbox

Subscriptions2
  • Weekly$0.997 Days
  • Yearly$9.991 Year
One-time1
  • Lifetime$29.99

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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