PractiCalc2 vs Showa100
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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
Showa100
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Japanese Era Converter A simple app for converting years between the Japanese eras (Reiwa, Heisei, Showa) and the Western (Gregorian) calendar. Designed to lighten the workload for anyone who handles Japanese documents, this tool makes year conversion quick and easy with a simplified, user-friendly interface.
Screenshots
Verdict
The clearest difference is price: Showa100 at Free against PractiCalc2's $1.99. PractiCalc2's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 48 months). On 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
Showa100 is free to download; PractiCalc2 costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
PractiCalc2 ships an update every 3 weeks, Showa100 every 48 months. Both last shipped on September 21, 2026.
| Parameter | PractiCalc2 | Showa100 |
|---|---|---|
| Price | $1.99 | Free — better |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 3 weeks — better | Every 48 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 13.0 — better | 16.6 |
| Further details — not scored | ||
| Size | 5 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | Tsutomu Nagai | kaitekidigital Inc. |
In-app purchases
PractiCalc2
No in-app purchases
Showa100
No in-app purchases
