Twin Calculator vs PractiCalc2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Twin Calculator
Perform two calculations simultaneously with this multi-function calculator. It allows for formula display and registration of constants, making complex calculations and tax calculations easier.
- Two calculators for simultaneous calculations
- Formula display for clear input
- Constant registration for quick access
- Supports bracket expressions
- Easy tax calculation
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■ Overview · This app can do two calculations at the same time. - At the same time you can display two calculators. · You can register the display and constant formula, they are useful calculator. ■ function 1. Two calculator To perform multiple calculations simultaneously in that there are two calculator, it can be conveniently used in various situations. 2. formula display You can batch calculation from entering the formula. It is easy to understand and difficult to mistake the formula display type computer. It corresponds to the expression using the brackets. 3. constant registration Two constants registration is possible. You can easily calculate the tax amount at the time of shopping.
PractiCalc2
A practical and advanced calculator app with memory, grand total, and constant calculation functions. Ideal for accounting, bookkeeping, and tax studies. Supports iOS 13+ and offers customizable display and themes.
- 12-digit large display
- Memory and Grand Total functions
- Constant calculation
- Two tax rates with customizable values
- Rounding and decimal selectors
- iOS Dark Mode support
- 10 color themes
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『PractiCalc2』はシンプルで実用的な電卓アプリです！ メモリー機能、グランドトータル機能、定数計算機能を活用した高度な計算が可能ですので経理実務や、簿記、税理士、公認会計士の勉強をされている方にも最適です！ ※電卓操作はカシオ方式を採用しています。 ※『PractiCalc』の後継機種で、iOS13以上が必要です。 機能一覧 ・１２桁大型表示 ・四則計算(+,-,×,÷) ・メモリー(M+,M-,MR,MC)計算 ・グランドトータル(GT)計算 ・ルート(√)計算 ・パーセント(%)計算 ・２つの税率計算(税率は設定可能) 軽減税率対応 ・ラウンドセレクター F(端数処理なし)、CUT(切り捨て)、 UP(切り上げ)、5/4(四捨五入) ・小数点セレクター ０〜５桁より選択（Fの時は無効） ・サインチェンジ(+/-) ・シフトキー(▷) ・接触(バイブレーション)のON、OFF ・iOS13のダークモードに対応 ・色は10色から選択できます ・iPad版は、Split View、Slide Over対応
Screenshots
Verdict
The clearest difference is review sentiment: PractiCalc2 at 100% against Twin Calculator's 0%. PractiCalc2 also leads on update cadence (every 3 weeks vs every 4 months). Twin Calculator's advantage is price (Free vs $1.99) and iOS requirement (8.0 vs 13.0). On ads, in-app purchases 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
Twin Calculator is free to download; PractiCalc2 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Twin Calculator ships an update every 4 months, PractiCalc2 every 3 weeks. The most recent releases landed on September 27, 2026 and September 21, 2026 respectively.
| Parameter | Twin Calculator | PractiCalc2 |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 4 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | R.E.O. Factory | Tsutomu Nagai |
Customer experience
Twin Calculator
PractiCalc2
In-app purchases
Twin Calculator
No in-app purchases
PractiCalc2
No in-app purchases
