Calculator # vs Molecule Simulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Math Photos Solver
- Handwriting Recognition
- AI Math Problem Solver
- Mathematical Display
- Equation Solvers
- 2D Graphing
- Algebraic Functions
Read full descriptionHide 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/
Molecule Simulator
Visualize the 3D structures of molecules using data from PubChem and Protein Data Bank. Explore molecules in various viewing modes and download an extensive library of compounds.
- 3D molecular visualization
- Space filling mode
- Ball-and-stick mode
- Data from PubChem
- Data from Protein Data Bank
- Downloadable molecule library
Read full descriptionHide full description
This app is a molecular viewer. With the data on PubChem and Protein Data Bank, it can show us 3D structure of molecules. Both space filling mode and ball-and-stick mode. --------------------------------------------- Contains some pre-installed modes. And you can download all kinds of molecules from PubChem or Protein Data Bank.
Screenshots
Verdict
The clearest difference is review sentiment: Molecule Simulator at 100% against Calculator #'s 60%. Molecule Simulator also leads on in-app purchases (none vs 6) and ads (none vs shown). Calculator #'s advantage is ratings volume (36K vs 24) and rating (4.6 vs 4.3). 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
Both are free to download. Calculator # sells 6 in-app purchases, starting at $1.49 per month. Molecule Simulator asks for nothing beyond the download.
Calculator # holds the better App Store score, 4.6 against 4.3. That said, the two scores are not equally well evidenced: Calculator # has 36K ratings behind it against 24, so its average is the more settled of the two. Written reviews complicate that: 60% of Calculator #'s written reviews are positive against 100% of Molecule Simulator's, so the app with the better star average is not the one people write more warmly about.
Calculator # ships an update every 2 months, Molecule Simulator every 4 months. The most recent releases landed on October 20, 2026 and October 8, 2026 respectively.
| Parameter | Calculator # | Molecule Simulator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (36K ratings) — better | 4.3 (24 ratings) |
| Positive reviews | 59.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 36K — better | 24 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 57 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Incpt.Mobis | 仕清 刘 |
Customer experience
Calculator #
Molecule Simulator
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
Molecule Simulator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator #
- 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 moreShow fewer
- PRO + Recognition 3 Months$11.993 Months
- 250 AI Recognition & Queries$0.99
- 600 AI Recognition & Queries$1.99
Molecule Simulator
No in-app purchases
Questions
Is Calculator # free?
Is Molecule Simulator free?
Which has better reviews, Calculator # or Molecule Simulator?
Do Calculator # or Molecule Simulator have ads?
Which is updated more often, Calculator # or Molecule Simulator?
Other comparisons















