PDF Tools vs Math keyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PDF Tools
This app offers a comprehensive suite of tools for managing PDF documents. Easily convert images to PDF, split and merge files, add watermarks, signatures, and compress documents. It provides a user-friendly interface for efficient document handling.
- Split and merge PDF files
- Convert images to PDF
- Add watermarks and signatures
- Compress PDF size
- Unlock secured PDFs
- Extract and delete pages
- Convert PDF to text/image
Read full descriptionHide full description
The Ultimate PDF Solution for Your Device Discover the simplicity and power of PDF App: Split, Merge & More, your all-in-one PDF converter and editor. Convert, merge, split, lock, unlock, compress, and more with just a few taps. Key Features: • Split PDF: Split a long detailed PDF into single-page PDFs without much effort. Select specific page ranges and get your desired pages in seconds. • Merge PDFs: Combine multiple PDF documents into a single file. Our PDF merger helps design a single-page PDF from different PDFs, eliminating the hassle of storing separate documents. • Delete Pages: Remove unwanted pages from your PDFs while merging or splitting them. Perfect for eliminating extra or unnecessary content. • Unlock PDFs: Easily unlock secured PDFs to split or merge them. • Watermark: Add text or image watermarks to protect your documents or give them a customized appearance. • Compress PDFs: Reduce the size of your PDFs for easier sharing and storage, whether you merge or split them. • Image to PDF Conversions: Convert PNG, JPEG, and HEIC images to PDF format. • PDF to Text: Convert PDF files to standard text quickly and easily. • PDF to Image Conversions: Convert your PDFs to PNG, JPEG, and HEIC formats. • Extract Pages: Select and extract specific pages from your PDF files. • Rotate Pages: Rotate individual pages or entire documents for better viewing. • Signature: Sign your PDF documents with ease. • Preview & Read PDFs: View and read your PDF files with a built-in reader. • Rename PDFs: Rename your PDF files for better organization. • Share PDFs: Share your PDFs directly from the app. • Dark & Light Mode Support: Enjoy a seamless user experience in both dark and light modes. • Face ID, Touch ID & Passcode Authentication: Secure your app with biometric and passcode authentication. Easy-to-Use Interface: 1. Select Your Tool: Choose the conversion or editing tool you need. 2. Add Your File: Upload your document or image from your device. 3. Convert or Edit: Perform your desired action with a simple tap. 4. Save & Share: Download the converted or edited file to your local storage or share it directly. 24/7 Customer Support: Our dedicated support team is available around the clock to assist you with any issues or questions. Download PDF App: Split, Merge & More Today! Streamline your document management with the most comprehensive PDF app available. Experience the convenience and efficiency of PDF App: Split, Merge & More on your iPhone, Mac, and iPad. About Premium Plan Billing: If you upgrade to the Premium plan, payment will be charged to your iTunes account. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can choose to be billed monthly or yearly. You can turn off auto-renew in your Apple ID Account Settings at any time. Privacy Policy: https://appinferencesoftware.wordpress.com/privacy-policy/ Terms of use:https://appinferencesoftware.wordpress.com/terms-of-use/ Contact Us: For any questions or support, reach out to us at passwordmanagerteam@gmail.com
Math keyboard
Perform calculations directly from your keyboard without switching apps. This smart helper allows quick math while chatting, taking notes, or entering data. It features calculator memory to save and reuse values, enhancing productivity.
- Built-in calculator keyboard
- Calculator memory function
- No app switching required
- Supports basic and advanced operations
- Minimalist design for productivity
Read full descriptionHide full description
A Custom Keyboard with a Built-In Calculator — Do the Math Without Switching Apps This smart calculator app is built into your keyboard, so you can perform quick calculations while typing in any app. Whether you're chatting, taking notes, or entering data, this math helper is always ready. Designed as a lightweight, efficient custom keyboard, it functions as a full math keyboard, now with calculator memory to store and reuse values easily. Key Features: - Built-in calculator available directly from the keyboard - Calculator memory for saving and recalling results - No app switching — works in Messages, WhatsApp, Telegram, and more - Supports basic and advanced operations - Clean, minimal design focused on productivity - Perfect for quick math, planning expenses, or typing smarter. Download now and keep your numbers at your fingertips.
Screenshots
Verdict
The clearest difference is price: PDF Tools at Free against Math keyboard's $0.99. PDF Tools also leads on review sentiment (100% vs 67%) and update cadence (every 6 days vs monthly). Math keyboard's advantage is in-app purchases (none vs 3). On rating, ads, device support and iOS requirement 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
PDF Tools is free to download; Math keyboard costs $0.99 up front. PDF Tools sells 3 in-app purchases, starting at $4.99 per month. Math keyboard asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for PDF Tools against 5.0 for Math keyboard. Both are backed by a comparable volume of ratings — 14 and 4 respectively. Written reviews are what separate them: 100% of PDF Tools's written reviews are positive against 67% of Math keyboard's.
PDF Tools ships an update every 6 days, Math keyboard monthly. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.
| Parameter | PDF Tools | Math keyboard |
|---|---|---|
| Price | Free — better | $0.99 |
| Rating | 5.0 (14 ratings) | 5.0 (4 ratings) |
| Positive reviews | 100.0% of reviews — better | 66.7% of reviews |
| Number of ratings | 14 — better | 4 |
| Update frequency | Every 6 days — better | Monthly |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium — better | Paid |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 36 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Vijay Kale | Nikolai Rodionov |
Customer experience
PDF Tools
Math keyboard
In-app purchases
PDF Tools
- Premium (1 month)3 Days trial$4.991 Month
- Premium (1 year)3 Days trial$14.991 Year
- Premium (Lifetime)$49.99
Math keyboard
No in-app purchases









