# Smart Calculator - SmartCalc — Inputs are always displayed! > Calculator with a four-line display showing inputs, history, and editable entries. (iPhone/iPad app by Takao Ichimura.) - Source: https://appshunter.io/ios/app/smart-calculator-smartcalc/id1474061594 (this page in markdown: same URL + `.md`) - Developer: [Takao Ichimura](https://appshunter.io/developer/1474061593) - Category: Utilities, Productivity - Price: Free - Rating: 4.50/5 from 22 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 9 MB - Languages: American English, Arabic, Japanese, Chinese (Simplified, China), Thai, Chinese (Traditional, Taiwan), Vietnamese - Released: 2019-08-02 - Data updated: 2026-08-02 - Monetization: ad-supported - User reviews in markdown: https://appshunter.io/ios/app/smart-calculator-smartcalc/id1474061594/reviews.md ## What is Smart Calculator? "What numbers did I input?” "Was the number I input correct?” Everyone must have caught on such anxiety while using a calculator. SmartCalc is a calculator that wipes out such anxiety. Because, after a calculation, inputs are displayed as you input, and also one input number can be changed for the next calculation. [Instructions] • To recall calculation history, tap ▼older key until you find the history you want. After you tapped ▼older key, if you want to recall a newer history, tap ▲newer key until you find it. • To clear the calculator completely including calculation history, close SmartCalc. • To clear the calculator except for the set memory and the independent memory on MR-line, tap C key and then tap AC key appeared, that is, double tap C key. • To clear the independent memory on MR-line, tap MR key and then tap MC key appeared, or swipe on MR-line. • To completely clear the number you have just input on 1st-line or 2nd-line, tap C key. • To erase a right end number at 1st-line or 2nd-line framed in the input mode, swipe on the line. • To change one of input numbers after a calculation, please tap the input line display to input a new number. • Tapping Result-line display is a convenient substitute for tapping = key. [Features] • SmartCalc is a calculator with a large 4-line display, which consists of 1st-line, 2nd-line, Result-line and MR-line. As all numbers related to a calculation are displayed on the lines all together, a user can check the calculation at a glance. • SmartCalc doesn't require any special operations. Anyone can use SmartCalc easily. • SmartCalc equips the set memory in addition to the general independent memory. The set memory automatically memorizes calculation history of all sets of calculated input numbers, an arithmetic operator and a result number. • Can be used in environments where either a period or a comma is used as the decimal separator. The developer assumes no responsibility for any loss or claims by third parties which may arise from the use of this app. ## Key features - Four-line display - Editable input numbers - Calculation history recall - Set memory - Independent memory - Decimal separator support ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/smart-calculator-smartcalc/id1474061594/reviews.md ### 5/5 — Easy to use *2023-10-16* Comes quick & ad’s don’t last long.just click continue to calculater! Great gadget **Developer response:** Thank you for your good comments! ### 5/5 — Surprisingly easy to use! *2019-08-18* It is wonderful to be able to change one input number! Easy to use anyway! **Developer response:** Thank you for your feedback. ### 1/5 — Easy if you have a ultra small fingers *2019-07-27* I have nothing else to say but the buttons are extra small. （╹◡╹）♡ **Developer response:** Thank you for your feedback. ## Frequently asked questions about Smart Calculator ### Does Smart Calculator have ads? Yes, Smart Calculator contains advertisements. This allows the app to be offered for free to users. ### How do I view past calculations in Smart Calculator? You can recall calculation history by tapping the '▼older' key until you find the desired history. To go back to newer history, tap the '▲newer' key. ### Can I edit a number after a calculation in Smart Calculator? Yes, you can change one of the input numbers after a calculation. Tap the input line display to input a new number for that entry. ### What devices is Smart Calculator available on? Smart Calculator is available on iPhone, iPad, and iPod devices. ### How often is Smart Calculator updated? The latest version is 4.0.0, and the app was last updated on February 23, 2026. This indicates a recent update. ### What is the age rating for Smart Calculator? Smart Calculator has an age rating of 4+, making it suitable for young children and general use. ### How do I clear the calculation history in Smart Calculator? To clear the calculator completely, including calculation history, close and reopen Smart Calculator. To clear only the current input, tap the 'C' key. ### What makes Smart Calculator different from other calculators? Smart Calculator features a large four-line display that shows all inputs and results simultaneously, and allows for easy editing of previous entries without restarting the calculation. ## Version history (last 5 releases) ### 4.2.2 — 2026-08-01 Made minor improvements and enhanced performance. ### 4.2.1 — 2026-07-16 Made minor improvements and enhanced performance. ### 4.2.0 — 2026-07-10 - Changed the color of the operator buttons - Updated the app icon ### 4.1.0 — 2026-04-11 Made minor improvements and enhanced performance. ### 4.0.1 — 2026-04-02 This update from Apple will improve the functionality of this app. No new features are included. Made minor improvements and enhanced performance. ## Apps similar to Smart Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Calculator ⁺⁻](https://appshunter.io/ios/app/calculator/id6443813573) | 4.7 (26) | Free | Utilities | | [Calculator PanecalST](https://appshunter.io/ios/app/calculator-panecalst/id702821889) | 4.8 (93) | Free | Utilities | | [The Simple Calculator - Solve!](https://appshunter.io/ios/app/the-simple-calculator-solve/id1525169566) | 4.6 (171) | Free | Utilities | | [Calculator Silver](https://appshunter.io/ios/app/calculator-silver/id432572975) | 4.4 (5) | $1.99 | Utilities | | [Magnet Calculator](https://appshunter.io/ios/app/magnet-calculator/id668273072) | 4.6 (16) | Free | Utilities | | [UniCount scientific calculator](https://appshunter.io/ios/app/unicount-scientific-calculator/id1034143766) | 5.0 (8) | Free | Utilities | ## More apps by Takao Ichimura - [Japan Consumption Tax Calc](https://appshunter.io/ios/app/japan-consumption-tax-calc/id1475187358) - [India Calculator - IndiaCalc](https://appshunter.io/ios/app/india-calculator-indiacalc/id1476661552) - [Arabic Calculator - ArabiCalc](https://appshunter.io/ios/app/arabic-calculator-arabicalc/id1477192394) - [Modulo Calculator](https://appshunter.io/ios/app/modulo-calculator/id1514351751) - [Sheet Count Calculator](https://appshunter.io/ios/app/sheet-count-calculator/id1516419390) All apps by Takao Ichimura: https://appshunter.io/developer/1474061593 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-02.*