Calculator # Downloads & RevenueCalculator # · App Store
Calculator # - 공학용 계산기
Not in any tracked top chart right now.
Updated 6 Nov 2026 · rankings refresh through the day
DeveloperIncpt.Mobis
CategoryUtilities
PriceFree
Released
Rating★ 4.7 (7.8k)
Version7.1
Age rating4+
First seen by us
28 Sep 2026
28 Sep 2026Installs (est.)10M+ worldwide
🔎Top 10 for “calculator”🔎Top 10 for “calculator”📈Dropped out of every chart we track🆕First spotted by AppInsider📦Version 7.1🆕Released on the App Store
Full timeline · 9 events
- 🔎Calculator # reached Top 10 for “calculator”#9 in Thailand search · popularity 79
- 🔎Calculator # reached Top 10 for “calculator”#10 in Turkey search · popularity 78
- 📈Calculator # dropped out of every chart we trackLast seen 21 Oct
- 🔎Calculator # reached Top 10 for “calculator” in 2 countriesArgentina, Colombia search · popularity 76
- 🔎Calculator # reached Top 10 for “calculator”#9 in Netherlands search · popularity 81
- 🆕Calculator # first spotted by AppInsider#18 in Top Free · Utilities · South Korea
- 🔎Calculator # reached Top 10 for “calculator”#9 in Japan search · popularity 77
- 📦Calculator # version 7.1▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Math Problem Solver
▸ Stability Improvements
▸ Minor Bug Fixes. - 🆕Calculator # released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.7 ★
7.8k ratings
Measured
New ratings a week
7.3
App Store, 4-week average
Measured
Calculator # on the App Store
App details
App ID
458535080
Publisher
An Truong
On the store since
Aug 2011
15 years on the store
Minimum OS
iOS 12.1+
iPhone 5s and later
Devices
iPhone · iPad
Universal purchase
Content rating
4+
Languages
15
AR NL EN FR DE IT JA KO PT RU ZH ES …
Size
59 MB
Also listed in
Productivity
Calculator # downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Active users
All platforms, worldwide. Free with an account.
Stickiness (DAU / MAU)
how many monthly users open it on a given day
How this is calculated
Monthly users come from lifetime installs across every store, fitted on monthly active user figures companies publish; daily users = monthly × the typical daily/monthly ratio for the category. Confidence is the chance the real number is within half to double ours.
In-app revenue
Worldwide, what users spend in Calculator # before Apple and Google take their fee.
How this is calculated
Not on any Top Grossing chart: monthly active users × spend per user for its category, measured on the charted apps nearest the bottom of the charts.
Business model: Ad-led
How Calculator # makes money: subscriptions, one-off purchases and ads.
SubscriptionsIn-app purchasesAds · 29 ad networks
Subscriptions
/mo
of revenue
Ads
/mo
of revenue
Top in-app purchases · App Store US, most popular first
| 1 | PRO Upgrade 1 Month subscription | |
| 2 | PRO + Recognition 1 Month subscription | |
| 3 | PRO Upgrade 3 Months subscription | |
| 4 | 250 AI Recognition & Queries | |
| 5 | 600 AI Recognition & Queries | |
| 6 | PRO + Recognition 3 Months subscription |
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
4.7 ★
7.8k ratings
Measured
Ratings
7.8k
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
7.3
4-week average
Lifetime rating
4.7★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
67/100
faster than 78% of Utilities apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Calculator #
◉ 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/
◉ 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/
Latest updates
7.1
▸ Support F(X,Y) = 0. E.g. Sin(X) + Cos(Y) = 0.
▸ Math Problem Solver
▸ Stability Improvements
▸ Minor Bug Fixes.
