Comparison

Classroom PDF vs NumWorks Scientific

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

Head to head
About

Classroom PDF

This app helps educators annotate and grade PDF documents, worksheets, and slide decks directly on their iPad. It features tools for drawing, pointing, zooming, and wirelessly projecting content to a classroom projector. Organize and share annotated files with students or export them to other apps.

Highlights
  • Annotate PDFs and slides
  • Grade worksheets
  • Toggle answer covers
  • Wireless projection via AirPlay
  • Draw, point, and zoom tools
  • Organize files with categories
  • Share annotated files
Features
Read full description

Classroom PDF is designed with unique features to fit your teaching workflow. Use it to grade worksheets and walk-through answers in class. DESIGNED FOR TEACHERS There are lots of PDF apps out there, but Classroom PDF was designed specifically for classroom use. It has special features to make walking through worksheets and in-class quizzes easier. OPEN PDF FILES AND EXPORTED SLIDE DECKS Open any PDF file from other Apps (“open in…" from Dropbox etc.). You can even export PDFs directly from Keynote. ADD COVERS AND TOGGLE WITH A TAP Add covers over answers to questions, and tap to toggle them. Great for in-class quizzes or to enhance class participation. PROJECT WIRELESSLY VIA AIRPLAY Use an AppleTV or physical connector to mirror the iPad's screen to a projector. Walk around the class, and work 1:1 with students. DRAW, POINT, AND ZOOM Annotate documents with smooth ink. Write in answers or grade worksheets. Use the virtual laser-pointer to call out parts of the page. SHARE ANNOTATED FILES Email annotated or graded files to students. You can also export PDFs to 3rd party Apps such as Dropbox. STORE AND ORGANIZE ALL YOUR FILES Keep all your PDF files neatly organized with color coded categories. WE BUILD TOOLS FOR PEOPLE WHO CHANGE THE WORLD You guys have an important job, and it matters to us that you find our Apps helpful in your work. We work really hard to make sure we create the best tools possible, but we also realize that everyone's workflow is slightly different. If you have any thoughts on other features or capabilities you would find useful in your daily work, please do let us know. Your input helps us prioritize our schedules. You can reach us via the feedback page. Thanks for doing the work that you do. We hope that you find Classroom PDF helpful in its small way. Warm regards, - The App Makers @ Qrayon.

About

NumWorks Scientific

This free scientific calculator app offers a user-friendly interface for learning math. It provides advanced calculation features, equation solving, and function graphing, developed in collaboration with educators.

Highlights
  • Fraction, square root, GCD, and trigonometric calculations
  • Statistical result calculation
  • Function definition and value tables
  • Equation and system of equations solver
  • Intuitive and evolutive interface
Features
Read full description

NumWorks designed an intuitive and evolutive scientific calculator to make learning math easier. You'd like to discover the NumWorks scientific calculator? You don't have your NumWorks scientific calculator handy? Download the free app to use your scientific calculator directly on your phone or tablet! FREQUENT UPDATES We frequently release software updates to improve our calculator, adding new features and enhancing the interface to provide an ever more powerful calculator. A TAILOR-MADE CALCULATOR We closely work with a growing community of educators and developers to build together the perfect calculator for STEM education. DISCOVER ALL THE FEATURES Easily perform calculations with fractions, square roots, GCDs, or trigonometric functions Calculate statistical results from entered data Define up to two functions and display their value tables Solve your equations and systems of equations Visit www.numworks.com for more information!

Screenshots

NumWorks Scientific3 screens

Verdict

The call

The clearest difference is price: NumWorks Scientific at Free against Classroom PDF's $9.99. NumWorks Scientific also leads on rating (5.0 vs 4.5) and in-app purchases (none vs 2). Classroom PDF's advantage is ratings volume (16 vs 1). On review sentiment and ads 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

NumWorks Scientific is free to download; Classroom PDF costs $9.99 up front. Classroom PDF sells 2 one-off in-app purchases. NumWorks Scientific asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

NumWorks Scientific holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Classroom PDF has 16 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Classroom PDF ships an update every 4 months, NumWorks Scientific monthly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

Scorecard8 real differences · 2 level
Classroom PDF versus NumWorks Scientific: the parameters behind the verdict, then further details
ParameterClassroom PDFNumWorks Scientific
Price$9.99Free — better
Rating4.5 (16 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings16 — better1
Update frequencyEvery 4 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationPaidFree — better
DevicesiPadiPhone, iPad, iPod, Mac — better
Requires iOS15.68.0 — better
Further details — not scored
Size3 MB3 MB
Age rating4+4+
DeveloperQrayon, LLCNumWorks

Customer experience

Classroom PDF

All ratings15 ratings
Positive86.7%
Neutral6.7%
Negative6.7%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

NumWorks Scientific

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

Classroom PDF

One-time2
  • Standard PurchaseFree
  • Bonus PurchaseFree
None

NumWorks Scientific

No in-app purchases

Questions

Is Classroom PDF free?
Classroom PDF costs $9.99, and also offers in-app purchases.
Is NumWorks Scientific free?
NumWorks Scientific is free to download, with no in-app purchases.
Which has better reviews, Classroom PDF or NumWorks Scientific?
NumWorks Scientific is rated higher. Classroom PDF averages 4.5 out of 5 from 16 ratings, while NumWorks Scientific averages 5.0 from 1 ratings.
Do Classroom PDF or NumWorks Scientific have ads?
Neither Classroom PDF nor NumWorks Scientific shows ads.
Which is updated more often, Classroom PDF or NumWorks Scientific?
Classroom PDF ships an update every 4 months, and NumWorks Scientific monthly. Most recently, Classroom PDF was updated on October 23, 2026 and NumWorks Scientific on October 24, 2026.

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