Math Derivatives vs ChatPDF
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Math Derivatives
Access a comprehensive list of common derivative formulas for various mathematical functions. Easily view derivative rules for basic, exponential, logarithmic, trigonometric, and hyperbolic functions, or display all formulas simultaneously. An upgrade option provides access to even more formulas.
- List of common derivative formulas
- Derivative rules for basic functions
- Exponential function derivatives
- Logarithmic function derivatives
- Trigonometric function derivatives
- Hyperbolic function derivatives
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Make maths easy with this app! This app contains a list of all common derivatives. Click on the formula to get the derivative. You can view derivative rules; basic, exponential, logarithmic, trigonometry and hyperbolic functions, or show all formulas at once. You can upgrade to the pro version for even more formulas.
ChatPDF
This AI-powered tool allows you to ask questions and get summaries directly from your PDF documents. It supports multiple files, OCR, and multilingual interactions, making complex information easily accessible.
- Instant answers from PDFs
- Quick document summaries
- Chat with multiple PDFs
- OCR for scanned documents
- Multilingual support
- Cross-device access
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ChatPDF lets you ask questions, request summaries, or quickly find the information you need—powered by advanced AI that understands your documents. Simply upload your PDF and start chatting. Ideal for students, researchers, and professionals, ChatPDF helps you effortlessly grasp complex research papers, academic articles, or any document you care about. Key Features: • Instant Answers: Ask questions directly to your PDFs and receive accurate responses based entirely on your document's content. • Quick Summaries: Save time and boost your understanding with concise, clear summaries of lengthy texts. • Multi-PDF Chat: Manage multiple documents seamlessly by chatting with several PDFs at once. • OCR Support: Easily extract text from scanned documents or images, making even printed PDFs fully searchable. • Multilingual Support: Engage with your documents in any language, simplifying global research and collaboration. • Robust Data Security: Your privacy matters. ChatPDF keeps your documents confidential with advanced data protection measures. • Cross-Device Access: ChatPDF runs smoothly on phones, tablets, and desktops, providing seamless document interactions wherever you are. • Trusted by Experts: Used and trusted by researchers from renowned institutions such as Stanford and Harvard for reliable, swift document analysis. • Multiple File Formats: Beyond PDFs, ChatPDF supports a variety of file formats, giving you flexible document management options. https://chat-pdf.notion.site/ChatPDF-Terms-of-Service-6a422751d9b74ad8893dea50fd970270ChatPDF is your essential tool for smarter document engagement. Whether you're studying, preparing presentations, or simply trying to make sense of complex material, ChatPDF turns your documents into clear, insightful conversations. Download now and revolutionize the way you work with PDFs! Terms of service & privacy policy: https://chat-pdf.notion.site/ChatPDF-Privacy-Policy-45fa3cf8bac8483896eb09b108f0c0f2 https://chat-pdf.notion.site/ChatPDF-Terms-of-Service-6a422751d9b74ad8893dea50fd970270
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Verdict
Math Derivatives and ChatPDF both sit at 4.5 stars, but that hides the real split: 100% of Math Derivatives's written reviews are positive against 0% of ChatPDF's. Math Derivatives also leads on ads (none vs shown) and iOS requirement (11.3 vs 15.6). ChatPDF's advantage is update cadence (every 4 days vs every 2 months) and ratings volume (92 vs 15). On price, rating, in-app purchases and monetization model 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
Both are free to download. Math Derivatives sells 1 one-off in-app purchase and ChatPDF sells 2 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.5 for Math Derivatives against 4.6 for ChatPDF. That said, the two scores are not equally well evidenced: ChatPDF has 92 ratings behind it against 15, so its average is the more settled of the two. Written reviews are what separate them: 100% of Math Derivatives's written reviews are positive against 0% of ChatPDF's.
Math Derivatives ships an update every 2 months, ChatPDF every 4 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.
| Parameter | Math Derivatives | ChatPDF |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (15 ratings) | 4.6 (92 ratings) — better |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 15 | 92 — better |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.3 — better | 15.6 |
| Further details — not scored | ||
| Size | 13 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Electronial | ChatPDF GmbH |
Customer experience
Math Derivatives
ChatPDF
In-app purchases
Math Derivatives
- Pro version$0.99
ChatPDF
- Monthly Plus Subscription$14.991 Month
- ChatPDF Yearly Plus Plan$89.991 Year
