Comparison

Pascal vs Modify PDF Pro

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

Head to head
About

Pascal

This app offers a powerful 3-in-1 calculator experience, combining scientific, graphing, and programmer functionalities. The scientific calculator is free, while graphing and programmer modes require an in-app purchase, with trials available for testing.

Highlights
  • Scientific calculator (degree, radian, gradian modes)
  • RPN mode
  • Graphing calculator with smart tape and adaptive sampling
  • Programmer calculator (8, 16, 32, 64-bit bitwise)
  • Multiple numeral systems (binary, octal, decimal, hex)
  • Unicode and ASCII character encoding
Features
Read full description

Pascal (formerly Calculator³) is a professional-grade 3-in-1 scientific, graphing and programmer calculator. Scientific Calculator¹ - Supports degree, radian and gradian modes - Decimal factorials - Modulo operator - Permutations (nPr) and combinations (nCr) - Standard memory functions - RPN mode Graphing Calculator² - Includes all functions the scientific calculator offers - TI-like design - Perform calculations on a smart tape (i.e. no need to close parenthesis, multiply out brackets, real-time syntax highlighting) - Plot graphs using adaptive sampling algorithm to generate precise results - Show or hide roots/intersections and trace values Programmer Calculator³ - Supports 8, 16, 32, and 64-bit bitwise calculations - Binary (base-2), octal (base-8), decimal (base-10), and hexadecimal (base-16) numeral systems too - Unicode (UTF-16) and ASCII character encoding - A binary table that shows you in real time the binary representation of the current operand - RPN mode

About

Modify PDF Pro

Features
Read full description

Editor PDF Pro is your all-in-one PDF app for iPhone and iPad: scan, recognize text, edit, sign, convert and organize files with a clean, professional interface. SCAN & EXTRACT TEXT (OCR) Capture documents, invoices or notes with the camera and get editable text thanks to high-precision OCR. Perfect for digitizing paperwork without retyping. EDIT YOUR PDFs Add or change text, insert images, redact sensitive data and fine-tune pages without leaving your device. Built for fast, accurate edits on the go. SIGN WITH EASE Draw a visual signature or use digital certificates when you need more formality. Place the signature on the page you choose. COMPLETE PDF TOOLKIT • Merge multiple PDFs into one • Split pages or extract only what you need • Rotate and reorder pages • Compress files for email or messaging • Convert between PDF, Word, Excel, PowerPoint and images • Watermark and page numbers • Password protect or unlock • Repair damaged PDFs • Extract text from a PDF CLOUD & FILES Save and open documents in your Editor PDF Pro cloud. Keep work synced and ready whenever you need it. SMARTVAULT A secure space for sensitive personal documents (IDs, invoices, health records and more), with protection options for peace of mind. INBOX & WORKFLOWS Manage incoming documents and keep daily work in one place instead of jumping between apps. FREE & PREMIUM Start free with a monthly action allowance. Go Premium for unlimited OCR and advanced tools, no watermarks, cloud sync and priority improvements. SUBSCRIPTIONS (auto-renewable) • Premium Monthly — 1 month length • Premium Annual — 1 year length • Premium Lifetime — one-time purchase (not a subscription) Prices are shown in the app for your App Store region and charged to your Apple ID. Subscriptions renew automatically unless canceled at least 24 hours before the period ends. PRIVACY & TERMS (EULA) Privacy Policy: https://www.pdf-analizer.com/privacidad.html Terms of Use (EULA): https://www.pdf-analizer.com/terminos.html Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Editor PDF Pro — less friction, more documents done.

Screenshots

Pascal3 screens
Modify PDF Pro4 screens

Verdict

The call

The clearest difference is price: Modify PDF Pro at Free against Pascal's $2.99. Modify PDF Pro also leads on iOS requirement (15.0 vs 17.6). Pascal's advantage is update cadence (every 2 weeks vs every 6 months). On ads, in-app purchases 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

Modify PDF Pro is free to download; Pascal costs $2.99 up front. Pascal sells 3 one-off in-app purchases and Modify PDF Pro sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Pascal ships an update every 2 weeks, Modify PDF Pro every 6 months. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.

Scorecard3 real differences · 7 level
Pascal versus Modify PDF Pro: the parameters behind the verdict, then further details
ParameterPascalModify PDF Pro
Price$2.99Free — better
Rating4.0 (23 ratings) — better—
Positive reviews68.3% of reviews—
Number of ratings23 — better—
Update frequencyEvery 2 weeks — betterEvery 6 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.615.0 — better
Further details — not scored
Size3 MB75 MB
Age rating4+4+
DeveloperAndrew WeiJose Antonio Salinas Garcia

Bugs and requests

Pascal

Reported bugs

12 issues
  • Crashes after updates
  • Premium features reverted to basic
  • Cannot enter numbers with iPad Magic Keyboard
  • RPN logic not selectable
  • Key response slow or nonexistent on watch
Show 7 more
  • Lost programming calculator after update
  • App crashes when typing '='
  • App crashes immediately upon opening
  • Fonts are blurry on iPhone 6
  • Bug with exponentiation (adds random digit 2)
  • Cannot swipe to change calculator modes
  • Making a number negative results in incorrect value

Requested features

12 requests
  • Add RPN to Apple Watch app
  • Improve iPad Magic Keyboard support
  • Make themes free for all users
  • Add a backspace button to Apple Watch app
  • Add Arabic language support
Show 7 more
  • Change app icon for better recognition
  • Option to disable or change click sounds
  • Improve navigation for editing equations
  • Make graph view full screen
  • Add polar graph instructions or functionality
  • Add a tape for DEG mode
  • Add a widget for iOS 8

Modify PDF Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Pascal

One-time3
  • Theme Pack$0.99
  • Graphing Calculator$1.99
  • Programmer Calculator$1.99
3 purchases

Modify PDF Pro

Subscriptions2
  • Smart OCR Mensual$3.991 Month
  • Smart OCR Anual$34.991 Year
One-time1
  • Cuenta premium vitalicia$69.99

Questions

Is Pascal free?
Pascal costs $2.99, and also offers in-app purchases.
Is Modify PDF Pro free?
Modify PDF Pro is free to download, with in-app purchases available.
Do Pascal or Modify PDF Pro have ads?
Neither Pascal nor Modify PDF Pro shows ads.
Which is updated more often, Pascal or Modify PDF Pro?
Pascal ships an update every 2 weeks, and Modify PDF Pro every 6 months. Most recently, Pascal was updated on October 13, 2026 and Modify PDF Pro on October 8, 2026.

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