Comparison

Scientific++ vs Calculator HD Pro

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

Head to head
About

Scientific++

This app is a powerful scientific calculator with advanced features like fraction manipulation, angle conversions, and equation solvers. It also includes a dice roller and a handy backspace function for easy editing. Additional geometry calculators are available via in-app purchase.

Highlights
  • Expression history and input display
  • Fraction manipulation and conversion
  • Degrees, minutes, seconds angle conversion
  • Permutation, combination, LCM, GCD, prime factorization
  • Quadratic and linear equation solver
  • Coordinate conversion (rectangular/polar)
  • Physical constants list
  • Dice roller
Features
Read full description

Scientific++ is a scientific calculator which has the following additional functionality compared with most available calculators: - Shows the expression as you enter and keeps a history of your calculations (Swipe up on the screen to reveal the history) - Capability of performing fraction manipulations and converting between different formats (proper, improper, and mixed fractions) and seamless integration of fraction, integer, and decimal manipulations. - Capability of inputting degrees, minutes, and seconds for angles and converting between degrees-minutes-seconds format and decimal format. - Capability of calculating permutation, combination, Least Common Multiple (LCM), Greatest Common Divisor (GCD), and prime factorization. - Quadratic and system of two linear equations solver - Rectangular to polar and polar to rectangular coordinate conversion (extremely useful for phasor calculations for electrical engineers) - Common physical constants can be chosen from a list and used in the calculations. - Throws a set of dice (choice of 1 die to 4 dice) - Backspace to delete last digit entered. - The left pane scrolls to reveal more functionality without a need to switch modes. The digits and most common operations are always visible and the less common operations can be revealed by scrolling the left half of the screen. - Sinusoidal functions can be calculated for angles in units of degrees, radians, or gradians. - Showing the content of memory on MR button, as long as it fits. - Right Triangle & Rectangle Calculator through in-app purchase. Scientific++ is an ongoing project and we are working on more features and functions to be added to every update of the app. You are going to love the simplicity of the user interface and you will get used to the extra functionality added to this product. Please do not hesitate to contact us for any questions, comments, to report any bugs, or to suggest additional functions you would like to see in the upcoming updates. Visit our website www.dogahe.com for more screen shots and other product descriptions.

About

Calculator HD Pro

This app offers a powerful and customizable calculator experience with a dual-line display for seeing input and results simultaneously. Save and organize your calculations with history, labeling, and email options. Personalize layouts, themes, and fonts for a comfortable and efficient user experience.

Highlights
  • Dual-line display
  • Multi-line input
  • Calculation history
  • Customizable layouts and themes
  • Full scientific functions
  • Left-handed mode
  • VoiceOver accessibility
Features
Read full description

A colorful calculator with big buttons, comprehensive features, and extensive customization. Used by millions. Completely ad-free. SEE EVERY STEP ・Dual-line display - shows your input and result simultaneously ・Multi-line input for long equations ・Tap & hold to move the cursor or copy and paste where you want SAVE YOUR WORK ・History saves every calculation with time and date ・Label important calculations for easy reference ・Email single calculations or complete history ・Swipe down to review previous work CUSTOMIZE EVERYTHING ・6 layouts including extra-large button options ・10 color themes plus Dark Mode ・Adjustable font size and bold text ・Left-handed mode ・Show or hide features you don't need SCIENTIFIC FUNCTIONS ・Full scientific calculator when needed ・Memory buttons with values displayed ・Percentage and backspace buttons ・Automatic scientific notation ・VoiceOver accessibility OPTIONAL IN APP PURCHASES ・Today View Widget (iOS 17 and below) ・Multiple History Tapes ADDITIONAL FEATURES ・Customizable button symbols and decimal settings ・Multiple backspace button styles ・iPad Split View and 3D Touch support ・Gesture controls for quick access URL Scheme: calculatorhdpro://

Screenshots

Scientific++4 screens
Calculator HD Pro4 screens

Verdict

The call

The clearest difference is price: Scientific++ at $0.99 against Calculator HD Pro's $9.99. Scientific++ also leads on in-app purchases (none vs 2). Calculator HD Pro's advantage is ratings volume (11K vs 61) and rating (4.8 vs 4.5). On review sentiment, ads, monetization model 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

Scientific++ costs $0.99 and Calculator HD Pro $9.99 up front. Calculator HD Pro sells 2 one-off in-app purchases. Scientific++ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Calculator HD Pro holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Calculator HD Pro has 11K ratings behind it against 61, so its average is the more settled of the two. Written reviews point the same way: 89% of Scientific++'s written reviews are positive against 95% of Calculator HD Pro's.

UpkeepUpdate frequency

Scientific++ ships an update every 6 months, Calculator HD Pro every 2 months. The most recent releases landed on September 24, 2026 and September 25, 2026 respectively.

Scorecard5 real differences · 5 level
Scientific++ versus Calculator HD Pro: the parameters behind the verdict, then further details
ParameterScientific++Calculator HD Pro
Price$0.99 — better$9.99
Rating4.5 (61 ratings)4.8 (11K ratings) — better
Positive reviews89.5% of reviews94.8% of reviews — better
Number of ratings6111K — better
Update frequencyEvery 6 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.615.2 — better
Further details — not scored
Size3 MB48 MB
Age rating4+4+
DeveloperDogaheCider Software LLC

Customer experience

Scientific++

All ratings61 ratings
Positive88.5%
Neutral0.0%
Negative11.5%
Written reviews38 reviews
Positive89.5%
Neutral2.6%
Negative7.9%

Calculator HD Pro

All ratings11,230 ratings
Positive96.6%
Neutral1.8%
Negative1.6%
Written reviews786 reviews
Positive94.8%
Neutral3.4%
Negative1.8%

Bugs and requests

Scientific++

Not enough reviews yet to summarise bugs or requests.

Calculator HD Pro

Reported bugs

2 issues
  • Cannot delete lists in history tapes
  • Ads still appear after purchasing full version

Requested features

3 requests
  • Add binary, decimal, and hex conversion
  • Ability to manually sort result lines
  • Add a tax calculation button

In-app purchases

None

Scientific++

No in-app purchases

2 purchases

Calculator HD Pro

One-time2
  • Widget$1.99
  • Multiple History Tapes$1.99

Questions

Is Scientific++ free?
Scientific++ costs $0.99, with no in-app purchases.
Is Calculator HD Pro free?
Calculator HD Pro costs $9.99, and also offers in-app purchases.
Which has better reviews, Scientific++ or Calculator HD Pro?
Calculator HD Pro is rated higher. Scientific++ averages 4.5 out of 5 from 61 ratings, while Calculator HD Pro averages 4.8 from 11K ratings.
Do Scientific++ or Calculator HD Pro have ads?
Neither Scientific++ nor Calculator HD Pro shows ads.
Which is updated more often, Scientific++ or Calculator HD Pro?
Scientific++ ships an update every 6 months, and Calculator HD Pro every 2 months. Most recently, Scientific++ was updated on September 24, 2026 and Calculator HD Pro on September 25, 2026.

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