Comparison

Natural Scientific Calculator vs TWC Performance Platform

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

Head to head
About

Natural Scientific Calculator

This app offers a natural way to input mathematical equations, similar to writing them on paper. It features intuitive editing with swipe gestures and pinch-to-zoom for complex expressions. Save frequently used equations for quick access.

Highlights
  • Natural input for equations
  • Swipe to edit and pinch to zoom
  • History and favorites for equations
  • Fractions, roots, and exponents
  • Radians and degrees support
  • Decimal to fraction conversion
Features
Read full description

Loved by over 1 million users, Natural Scientific Calculator is the fastest way to do maths. NSC allows to you edit wherever you need to. Unlike other scientific calculators which make you mash buttons to move a cursor, our app allows you to simply swipe on the keyboard to get to where you need. You can also pinch to zoom and get an overview of complex equations. Write as you would on paper  Other apps make you enter equations on a single line like something from the 1970s. Our Natural Input solves this problem by allowing you to enter equations as you'd write them on paper, using fractions, roots, exponents and more. It's called a "natural display" and is a common feature on scientific calculators like the Casio fx-82 or TI-30XB. History and Favourites  Instead of having to type out long equations over and over, simply favourite them and retrieve them with a single tap. Guaranteed to speed up your workflow enormously.  Fully featured scientific calculator functionality  • Radians and Degrees support  • Decimal to fraction conversion  • Mixed and improper fractions • Permutations and combinations  • Precision to 2,048 decimal places (non-trigonometric/roots) • Programmable roots, logarithms  • Programmable constants • Trigonometric functions - sine, cosine, tangent Our Privacy Policy: http://www.stultusstudios.com/privacy-policy/ Our Terms of Use: http://www.stultusstudios.com/terms-and-conditions/

About

TWC Performance Platform

Features
Read full description

Still doing inspections with paper and pencil and relying on a call or email for updates on projects? Such makeshift processes should be a thing of the past, and the TWC Performance Platform is here to help. The TWC Performance Platform provides the flexibility to perform inspections from anywhere, even without an internet connection. Once the app is downloaded onto the device, inspections are performed with a few simple taps. The data is then uploaded and stored to an online database. Inspection scores are emailed immediately to any pre-selected individuals. You can also view reports from the device, or clients can login to the online database to run the same inspection reports. The TWC Performance Platform also allows managers to create and send work orders directly to the right people in a quick and efficient manner. It also automatically escalates work orders as needed, so every one involved is on the same page. Unleash the power of Quality and start using the TWC Performance Platform today.

Screenshots

Natural Scientific Calculator3 screens
TWC Performance Platform4 screens

Verdict

The call

The clearest difference is in-app purchases: TWC Performance Platform at none against Natural Scientific Calculator's 3. Natural Scientific Calculator's advantage is update cadence (weekly vs every 9 months). On price, ads, device support and iOS requirement 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

Both are free to download. Natural Scientific Calculator sells 3 in-app purchases, starting at $0.49 per month. TWC Performance Platform asks for nothing beyond the download.

UpkeepUpdate frequency

Natural Scientific Calculator ships an update weekly, TWC Performance Platform every 9 months. Both last shipped on November 2, 2026.

Scorecard2 real differences · 8 level
Natural Scientific Calculator versus TWC Performance Platform: the parameters behind the verdict, then further details
ParameterNatural Scientific CalculatorTWC Performance Platform
PriceFreeFree
Rating4.6 (95 ratings) — better—
Positive reviews66.2% of reviews—
Number of ratings95 — better—
Update frequencyWeekly — betterEvery 9 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size83 MB21 MB
Age rating4+4+
DeveloperStultus Studios Pty LtdOtuvy, Inc.

Bugs and requests

Natural Scientific Calculator

Reported bugs

12 issues
  • Math error on all calculations (widespread issue from late 2022-2023)
  • App freezes during startup or tutorial
  • Crashes during complex calculations
  • Incorrect inverse trigonometric function results
  • Incorrect sine, cosine, tangent calculations
Show 7 more
  • Scientific notation exponent calculation errors
  • App crashes when switching between apps
  • UI elements stretched or unreadable in split-screen mode
  • Tutorial screen stuck with no way to progress
  • Slow performance and battery drain
  • Crashes on iOS 12 and newer versions
  • Buttons unresponsive or non-functional

Requested features

15 requests
  • Dark mode or dark theme option
  • Physical keyboard support
  • Copy and paste functionality
  • History or ticker of previous calculations
  • Double and triple zero buttons (00, 000)
Show 10 more
  • Thousand separator (comma) support
  • Equation solver feature
  • Memory function for reusing previous results
  • Antilog function
  • S→D (Sexagesimal to Decimal) button
  • Scientific notation handling improvements
  • iPad split-screen optimization
  • Skip tutorial option
  • Better cursor control for equation modification
  • Conversions and constants library

TWC Performance Platform

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Natural Scientific Calculator

Subscriptions2
  • NSC Plus Monthly Subscription$0.491 Month
  • NSC Plus Annual Subscription$3.991 Year
One-time1
  • NSC Plus$7.99
None

TWC Performance Platform

No in-app purchases

Questions

Is Natural Scientific Calculator free?
Natural Scientific Calculator is free to download, with in-app purchases available.
Is TWC Performance Platform free?
TWC Performance Platform is free to download, with no in-app purchases.
Do Natural Scientific Calculator or TWC Performance Platform have ads?
Neither Natural Scientific Calculator nor TWC Performance Platform shows ads.
Which is updated more often, Natural Scientific Calculator or TWC Performance Platform?
Natural Scientific Calculator ships an update weekly, and TWC Performance Platform every 9 months. Most recently, Natural Scientific Calculator was updated on November 2, 2026 and TWC Performance Platform on November 2, 2026.

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