Comparison

CALC Smart Calculator ± vs GraphCalcPro2Go

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

Head to head
About

CALC Smart Calculator ±

This app offers a versatile calculator experience with basic, scientific, and advanced modes. It features real-time results, unit conversions, custom functions, and a shareable history. Optimized for various Apple devices, it's designed for ease of use by students, professionals, and scientists.

Highlights
  • Real-time results
  • Unit and currency conversions
  • Custom functions and constants
  • Shareable calculation history
  • Landscape mode with tape-roll
  • Gratuity calculator
Features
Read full description

Why Choose CALC Smart? ► Used by Scientists, Professionals and Students alike ► Apple-Featured: Spotlighted in Utilities and Calculate & Convert. ► User-Loved: Over 10k+ global reviews and 200M+ sessions validate its utility. ► Educator-Certified: Praised by teachers on the Educational App Store for its intuitive UI. Ready for the Latest OS * Multitask on your iPad and use 3D Touch shortcuts. * Search your calculation history with Spotlight. * Widget with history integration. * Apple Watch support, complete with haptic feedback and complications. Top 10 Unique Features ① Real-time results, even with incomplete parentheses. ② Landscape mode for shareable history and tape-roll. ③ Optimized custom keyboard & widget to save space and time. ④ Fast unit and currency conversions—a swipe away. ⑤ Quick gratuity calculator with rounding options. ⑥ Display decimals as fractions with 1/999 precision. ⑦ Create unlimited custom functions and constants. ⑧ Easy expression sharing via link. ⑨ Built-in timer. ⑩ Limitless themes and layouts. Why Users Love CALC * Live Math: Natural input, even for complex calculations. * Swipe Functions: Over 60 advanced math functions just a swipe away. * History: Never lose track of your calculations. * Conversion: 21 categories, plus custom options. Additional Features * Edit on the Fly: Long-press to modify expressions and numbers. * Audio Feedback: Customize tapping sounds. * Styling: Multiple font choices. * Enterprise-Ready: EMM support with MDM & AppConfig. We Listen * Frequent updates based on your feedback. Got a suggestion? Visit our UserVoice page: https://QApps.UserVoice.com Custom Background Tip * Design your own CALC background with images from NASA’s multimedia library: https://nasa.gov/multimedia Terms & Usage * Using this app means agreeing to the standard Terms of Use. Standard Terms of Use (EULA) - https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

GraphCalcPro2Go

This advanced scientific calculator offers ultra-high precision and a wide range of functions, replicating expensive handheld devices with added iOS capabilities. It supports both standard and RPN modes, includes built-in constants, and syncs across devices via iCloud. Users can also create graphs and share calculations.

Highlights
  • Ultra high precision and range
  • Standard (in-fix) and RPN modes
  • Built-in constants and unit conversions
  • iCloud sync across devices
  • Create and share graphs
  • Apple Watch compatibility
Features
Read full description

GraphCalcPro2Go is an advanced scientific calculator, offering features found on expensive handheld calculators, but with additional capabilities not possible with handhelds, thanks to iOS. Features include: • No ads. Ever. • Ultra high precision and range • Intuitive and easy to use • Standard (in-fix) and RPN modes • Built-in constants and unit conversions • iCloud sync With iCloud sync, you can synchronize your calculation history with GraphCalcPro2Go on all your iOS devices, and with GraphCalcPro on your Macs. Sharing feature allows you to share your calculation history with other users running GraphCalcPro2Go on their iOS devices and GraphCalcPro on their Macs. Additionally, you can create beautiful graphs with GCP2Go at the touch of a button. And now, you can run GCP2Go on your Apple Watch. GCP2Go on Apple Watch has the precision, performance, and all the scientific functions available on the iOS version - and graphing capability! Sync constants, and optionally history, between GCP2Go on your iPhone and your Apple Watch. Premium upgrade adds additional features, including: • Graph multiple equations simultaneously • Graph printing and sharing • Additional built-in constants, fully customizable • iCloud sync and sharing of user constants

Screenshots

CALC Smart Calculator ±4 screens
GraphCalcPro2Go4 screens

Verdict

The call

The clearest difference is update cadence: CALC Smart Calculator ± at fortnightly against GraphCalcPro2Go's every 3 months. CALC Smart Calculator ± also leads on ratings volume (2.4K vs 42). On price, rating, 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

Both are free to download. CALC Smart Calculator ± sells 4 in-app purchases, starting at $0.99 per 3 months and GraphCalcPro2Go sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

CALC Smart Calculator ± holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: CALC Smart Calculator ± has 2.4K ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 87% of CALC Smart Calculator ±'s written reviews are positive against 80% of GraphCalcPro2Go's.

UpkeepUpdate frequency

CALC Smart Calculator ± ships an update fortnightly, GraphCalcPro2Go every 3 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 8 level
CALC Smart Calculator ± versus GraphCalcPro2Go: the parameters behind the verdict, then further details
ParameterCALC Smart Calculator ±GraphCalcPro2Go
PriceFreeFree
Rating4.8 (2.4K ratings) — better4.6 (42 ratings)
Positive reviews87.3% of reviews — better80.0% of reviews
Number of ratings2.4K — better42
Update frequencyFortnightly — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, Apple Watch
Requires iOS17.0 — better18.6
Further details — not scored
Size16 MB9 MB
Age rating4+4+
DeveloperQApps LLCStarware Software LLC

Customer experience

CALC Smart Calculator ±

All ratings2,370 ratings
Positive96.7%
Neutral2.1%
Negative1.2%
Written reviews640 reviews
Positive87.3%
Neutral3.9%
Negative8.8%

GraphCalcPro2Go

All ratings40 ratings
Positive90.0%
Neutral5.0%
Negative5.0%
Written reviews10 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

Bugs and requests

CALC Smart Calculator ±

Reported bugs

3 issues
  • Calculation errors in certain scenarios
  • Forced tutorial popup on every launch
  • Unreliable widget functionality

Requested features

4 requests
  • Ability to easily clear calculation history
  • Option to customize button layout
  • Support for entering hexadecimal numbers
  • Integration with other apps and services

GraphCalcPro2Go

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

CALC Smart Calculator ±

Subscriptions4
  • Quarterly Supporter$0.993 Months
  • Quarterly Supporter7 Days trial$1.993 Months
  • Annual Contributor$2.991 Year
Show 1 more
  • Annual Contributor7 Days trial$5.991 Year
1 purchases

GraphCalcPro2Go

One-time1
  • Premium$0.99

Questions

Is CALC Smart Calculator ± free?
CALC Smart Calculator ± is free to download, with in-app purchases available.
Is GraphCalcPro2Go free?
GraphCalcPro2Go is free to download, with in-app purchases available.
Which has better reviews, CALC Smart Calculator ± or GraphCalcPro2Go?
CALC Smart Calculator ± is rated higher. CALC Smart Calculator ± averages 4.8 out of 5 from 2.4K ratings, while GraphCalcPro2Go averages 4.6 from 42 ratings.
Do CALC Smart Calculator ± or GraphCalcPro2Go have ads?
Neither CALC Smart Calculator ± nor GraphCalcPro2Go shows ads.
Which is updated more often, CALC Smart Calculator ± or GraphCalcPro2Go?
CALC Smart Calculator ± ships an update fortnightly, and GraphCalcPro2Go every 3 months. Most recently, CALC Smart Calculator ± was updated on November 1, 2026 and GraphCalcPro2Go on November 2, 2026.

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