Comparison

Calculator # vs ChemWhiz

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

Head to head
About

Calculator #

This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.

Highlights
  • Math Photos Solver
  • Handwriting Recognition
  • AI Math Problem Solver
  • Mathematical Display
  • Equation Solvers
  • 2D Graphing
  • Algebraic Functions
Features
Read full description

◉ Over 11,000,000 Downloads Worldwide ◉ Top Free Utilities Apps in US, UK, AUS, CAN, GER,... ◉ Rated & Reviewed on ILoveFreeSoftware.com FREE Alternative to Graphing TI-83, TI-84, TI-89, Casio FX, Sharp EL,... Calculator # – The free, multi-function calculator for iPhone/iPad is proud to offer a variety of features to satisfy wide ranges of customers: The App possesses a powerful math core and algebra engine with mathematical display support, making it a viable tool for everyone from those looking for basic calculation to more advanced users, such as scientific computation, engineers, and math students. Calculator # makes available everything you need – including a user manual and tutorial video clips – so you can master the app in a matter of minutes! ◉ Official Website: http://iPhoneCalculator.com ◉ ADVANCED FEATURES: ▸ Math Photos Solver * ▸ Handwriting Recognition * ▸ Math Problem Solver (AI) * ◉ GENERAL FEATURES: ▸ Universal Calculator App ▸ Support All the Latest Devices ¹ ▸ Support Multitasking (iPad) ▸ Support Wireless KB ² ▸ Mathematical Display ▸ Edit & Export Expression/Result ▸ History Tape View ▸ Basic Calculations (+, -, x, ÷, %, Abs,...) ▸ Advanced Functions (Sin,Cos,Ln,X!, ^, √,…) ▸ 14 Memory Variables (Including X,Y,Z,M) ▸ Assignment Operator ▸ F(x) Customize Functions (F1 Only) ▸ Fraction and Degree/Angle Calculation ▸ Numeric Integral Calculation ▸ Dual Skins (Silver Light & Carbon+) ◉ ALGEBRA FEATURES: ▸ Big Integer & Rational Number (Up to 30!) ▸ Expand and Factor Polynomials ▸ Basic Indefinite integral ◉ EQUATIONS SOLVERS: ▸ Quadratic Equations ▸ System of Linear Equations (2 Unknowns) ◉ 2D GRAPH: ▸ Snap to Points ▸ Smooth Zoom & Transformation ▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0. ◉ MULTIPLE LANGUAGES: ▸ English, Spanish, German, ▸ French, Japanese, Chinese (*) In-App-Purchase is required ¹: Include iPhone 6/6S+ HD Retina Display ²: Standard English KB We love your feedback, Thanks a lot ! Terms of Service: https://iphonecalculator.com/terms-of-service/

About

ChemWhiz

This app simplifies chemistry calculations by quickly finding molar mass from chemical formulas and converting between common units. It also provides detailed information for every element in the periodic table.

Highlights
  • Calculate molar mass from chemical formulas
  • Convert between common chemical units
  • Access comprehensive periodic table data
  • Share calculations and element information
  • Today widget for clipboard calculations
  • Share extension for selected text calculations
Features
Read full description

Best iOS App/3rd place overall winner at HS Hacks 2014! Tired of wasting your time doing menial calculations during chemistry labs? Then ChemWhiz is the app for you. Quickly find the molar mass of any chemical simply by typing its formula. Convert between common units like moles, liters, and grams. And view at-a-glance information about every element in the periodic table. • Enter chemical formulas and quickly check their molar mass • Quickly convert between common units of any chemical • Scroll through a vertical periodic table with all the information you'll need • Share calculations and elements through Facebook, Twitter, and more • Fully updated for iOS 12, iPhone XS Max, and the iPad Pro • Today widget to calculate the molar mass of the device's clipboard (requires iOS 10) • Share extension to calculate the molar mass of selected text anywhere across the device • 3D Touch shortcuts and previews throughout Stop wasting your time with calculations. Download ChemWhiz today! Created by Anant J, Aakash A, Youssef S, and Kamesh V.

Screenshots

Calculator #4 screens
ChemWhiz4 screens

Verdict

The call

The clearest difference is review sentiment: ChemWhiz at 100% against Calculator #'s 60%. ChemWhiz also leads on in-app purchases (none vs 6) and ads (none vs shown). Calculator #'s advantage is ratings volume (36K vs 7). On price, update cadence 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

Both are free to download. Calculator # sells 6 in-app purchases, starting at $1.49 per month. ChemWhiz asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ChemWhiz holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Calculator # has 36K ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 60% of Calculator #'s written reviews are positive against 100% of ChemWhiz's.

UpkeepUpdate frequency

Calculator # ships an update every 2 months, ChemWhiz every 6 weeks. The most recent releases landed on November 5, 2026 and November 1, 2026 respectively.

Scorecard7 real differences · 3 level
Calculator # versus ChemWhiz: the parameters behind the verdict, then further details
ParameterCalculator #ChemWhiz
PriceFreeFree
Rating4.6 (36K ratings)5.0 (7 ratings) — better
Positive reviews59.5% of reviews100.0% of reviews — better
Number of ratings36K — better7
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.19.1 — better
Further details — not scored
Size57 MB16 MB
Age rating4+4+
DeveloperIncpt.MobisAnant Jain

Customer experience

Calculator #

All ratings35,876 ratings
Positive90.4%
Neutral3.8%
Negative5.8%
Written reviews467 reviews
Positive59.5%
Neutral6.4%
Negative34.0%

ChemWhiz

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Calculator #

Reported bugs

3 issues
  • Crashes when trying to use certain functions
  • Handwriting recognition not working reliably
  • Inability to input negative numbers

Requested features

3 requests
  • Add option to turn off animation
  • Improve ad placement to avoid obstructing usage
  • Provide more transparency on paid features

ChemWhiz

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Calculator #

Subscriptions4
  • PRO Upgrade 1 Month3 Days trial$1.491 Month
  • PRO Upgrade 3 Months7 Days trial$2.993 Months
  • PRO + Recognition 1 Month$4.991 Month
Show 1 more
  • PRO + Recognition 3 Months$11.993 Months
One-time2
  • 250 AI Recognition & Queries$0.99
  • 600 AI Recognition & Queries$1.99
None

ChemWhiz

No in-app purchases

Questions

Is Calculator # free?
Calculator # is free to download, with in-app purchases available.
Is ChemWhiz free?
ChemWhiz is free to download, with no in-app purchases.
Which has better reviews, Calculator # or ChemWhiz?
ChemWhiz is rated higher. Calculator # averages 4.6 out of 5 from 36K ratings, while ChemWhiz averages 5.0 from 7 ratings.
Do Calculator # or ChemWhiz have ads?
Calculator # shows ads; ChemWhiz does not.
Which is updated more often, Calculator # or ChemWhiz?
Calculator # ships an update every 2 months, and ChemWhiz every 6 weeks. Most recently, Calculator # was updated on November 5, 2026 and ChemWhiz on November 1, 2026.

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