Comparison

Voice Note vs HiPER Scientific Calculator

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

Head to head
About

Voice Note

Easily design and create custom stickers, labels, and planner sheets with professional results. Choose from templates, customize elements like colors and text, and export high-quality, print-ready PDF files directly from your iPhone.

Highlights
  • Design custom stickers
  • Use ready-made templates
  • Customize colors and text
  • Export print-ready PDFs
  • Create planner stickers and labels
  • Design sticker sheets in any size
Features
Read full description

Sticky notes that live on your Home Screen. Jot down a thought, build a to do list, set a reminder, and pin it as a widget so it stays in sight without opening the app. WHAT YOU CAN DO • Sticky note widgets – keep notes and checklists on your Home Screen • To do lists – tick off tasks and feel the progress of your day • Reminders – jot it down, set a reminder, never forget it • Voice notes – dictate into any note. Your words are transcribed privately on your iPhone • Timers – notes, lists and timers, all one tap away • Photos – add a photo to any note to remember the moment • Write, draw, decorate – colors and styles to make every note yours • Desks – a separate board for every part of life: work, home, shopping, ideas. Swipe between them • No login required – open the app and start writing PERFECT FOR Grocery and shopping lists, daily plans, quick memos, study notes, chores, ideas you don't want to lose, and little reminders for yourself. Simple like a paper sticky note, always visible like a note on your fridge. Create your first note today! LEGAL Privacy Policy: https://elwind.space/pdfmaker/privacy Terms of Use: https://elwind.space/terms/

About

HiPER Scientific Calculator

This app offers advanced scientific calculation capabilities, including symbolic algebra, equation solving, and calculus functions. It supports high precision, natural expression input, and various display formats. Users can also visualize functions and equations with 2D and 3D graphing.

Highlights
  • Symbolic algebra
  • Integrals and derivatives
  • High precision calculations
  • Natural expression input
  • 2D and 3D graphing
  • Matrices and vectors
  • Unit conversions
Features
Read full description

Excellent scientific calculator with step-by-step solutions, symbolic algebra, graphing, equations, integrals and derivatives. The calculator has globally more than 50 million downloads and 250 000 five-star ratings. You can write expressions in a natural way and watch your calculations. The result is displayed as a number, simplified expression etc. An expression can also be entered from a photo. Take a picture of a handwritten or printed expression, and the calculator recognizes it and inserts it into the display, ready to be edited or evaluated. (premium) A step-by-step solution shows how an expression is solved, one step at a time, from the entered expression to the final result. Every step is explained, so you can see not only the result, but also the way to it. (more detailed steps are premium) Calculation details give you extended information about the result - alternative forms of the result, all complex roots, the unit circle, properties of a function and more. The calculator has several layouts suitable for various screen sizes: - "pocket" for small devices - "compact" for smartphones (in portrait and landscape orientation) - "expanded" for tablets Users can choose from several high-quality themes. The calculator has many functions, such as: - up to 100 digits of significand and 9 digits of exponent - basic arithmetic operations including percentage, modulo and negation - fractions and mixed numbers - periodic numbers and their conversion to fractions - unlimited number of braces - operator priority - repeated operations - selecting a part of an expression and applying context operations to the selection - equations (with one or more variables, systems of equations) - variables and symbolic computation - derivatives and integrals - graphs of functions, equations, integral area and limits; 3D graphs - matrices and vectors - statistics - regression analysis - complex numbers - conversion between rectangular and polar coordinates - sums and products of series - limits - advanced number operations such as random numbers, combinations, permutations, common greatest divisor, etc. - trigonometric and hyperbolic functions - powers, roots, logarithms, etc. - degrees, minutes and seconds conversion - fixed point, scientific and engineering display format - display exponent as SI units prefix - memory operations with unlimited extended memories - clipboard operations with various clipboard formats - result history - multiline display on tablets showing the complete history of calculations and access to the previous results - binary, octal and hexadecimal numeral systems - logical operations - bitwise shifts and rotations - more than 120 physical and mathematical constants - conversion among 250 units - Reverse Polish notation. The calculator has many settings to manage the calculation precision, decimal and thousand separators, etc. All features are described with a built-in help. Privacy Policy: https://hiperlabs.eu/privacy-policy/iOS.html Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Voice Note4 screens
HiPER Scientific Calculator4 screens

Verdict

The call

The clearest difference is price: HiPER Scientific Calculator at Free against Voice Note's $2.99. HiPER Scientific Calculator also leads on iOS requirement (15.0 vs 17.0). Voice Note's advantage is ads (none vs shown) and review sentiment (100% vs 83%). On update cadence, 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

HiPER Scientific Calculator is free to download; Voice Note costs $2.99 up front. Voice Note sells 3 in-app purchases, starting at $1.99 per month and HiPER Scientific Calculator sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Voice Note ships an update every 2 weeks, HiPER Scientific Calculator every 3 weeks. Both last shipped on November 7, 2026.

Scorecard5 real differences · 5 level
Voice Note versus HiPER Scientific Calculator: the parameters behind the verdict, then further details
ParameterVoice NoteHiPER Scientific Calculator
Price$2.99Free — better
Rating—4.7 (279 ratings) — better
Positive reviews100.0% of reviews — better82.8% of reviews
Number of ratings—279 — better
Update frequencyEvery 2 weeks — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size41 MB35 MB
Age rating4+4+
DeveloperHarun KarahanJindrich Houska

Customer experience

Voice Note

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HiPER Scientific Calculator

All ratings274 ratings
Positive93.4%
Neutral2.6%
Negative4.0%
Written reviews64 reviews
Positive82.8%
Neutral9.4%
Negative7.8%

Bugs and requests

Voice Note

Not enough reviews yet to summarise bugs or requests.

HiPER Scientific Calculator

Reported bugs

5 issues
  • Keyboard unresponsive in multiple occasions
  • App freezes when entering numbers
  • Failed upgrade workflow message
  • App offers paid upgrade after purchase
  • White text unreadable on dark background in iOS settings

Requested features

15 requests
  • Allow custom infix operations
  • Add widget support
  • Add RPN mode to iOS version
  • Add themes to iOS version
  • Add custom functions to iOS version
Show 10 more
  • Add more variables to iOS version
  • Support vertical view on iPad
  • Add custom fonts and skins
  • Add portrait layout for iPad
  • Add dedicated ENG mode button
  • Add dark mode and themes to iOS
  • Add button feedback on iOS
  • Add unit conversion feature to iOS
  • Improve statistical calculation interface
  • Allow subscription transfer between platforms

In-app purchases

3 purchases

Voice Note

Subscriptions2
  • Sticky Notes Pro Monthly$1.991 Month
  • Sticky Notes Pro Yearly7 Days trial$12.991 Year
One-time1
  • Lifetime Pro$17.99
2 purchases

HiPER Scientific Calculator

Subscriptions1
  • Pro version$0.991 Month
One-time1
  • Pro Forever$7.99

Questions

Is Voice Note free?
Voice Note costs $2.99, and also offers in-app purchases.
Is HiPER Scientific Calculator free?
HiPER Scientific Calculator is free to download, with in-app purchases available.
Do Voice Note or HiPER Scientific Calculator have ads?
HiPER Scientific Calculator shows ads; Voice Note does not.
Which is updated more often, Voice Note or HiPER Scientific Calculator?
Voice Note ships an update every 2 weeks, and HiPER Scientific Calculator every 3 weeks. Most recently, Voice Note was updated on November 7, 2026 and HiPER Scientific Calculator on November 7, 2026.

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