TriTab Calc vs PaymentFlow

A three-tab calculator that lets you keep multiple calculations going at the same time. The A, B, and C tabs each work as an independent calculator. Switch between them without losing your current expression or result. Use A for the pre-tax price, B for the tax-inclusive total, and C for the discounted price—all without writing down intermediate numbers or clearing your work. One purchase unlocks everything. No ads, no in-app purchases, no subscriptions. ■ Three Independent Calculators Switch between A, B, and C with one tap. Each tab keeps its own expression and result, so you can work on three calculations in parallel. ■ Compare All Three See the total of all three tabs and the difference between the highest and lowest at a glance. ■ Tax In and Out Add tax with one tap, or work back from a tax-inclusive price to the pre-tax amount. Set any tax rate in Settings. ■ Split the Bill Enter a total and the number of people to get the amount per person, with optional rounding up. ■ History, Copy and Undo Each tab keeps its own history. Tap an entry to copy its result. Tap the display to copy or paste, touch and hold to clear. Undo and redo are supported. ■ Essential Calculator Functions Basic arithmetic plus square root (√), square (x²), percentages (%), sign change (±), parentheses, and a 00 key. ■ Easy on the Eyes Choose from four themes—Pastel, High contrast, Dark, and Night—and turn on Large text when you need it. ■ Four Languages English, Japanese, Simplified Chinese, and Traditional Chinese. The app follows your device language automatically. ■ Perfect For • Checking estimates and invoices • Comparing pre-tax, tax-inclusive, and discounted prices • Calculating sales tax and shopping discounts • Splitting bills and calculating per-person costs • Comparing unit prices • Adding up inventory and quantities ■ Privacy Your calculation history and settings are stored only on your device. No account is needed, and the app does not collect personal information or send your data to external servers.

「この支払い、いつだっけ？」 クレジットカードを使うと、後日銀行口座から引き落とされます。 さらに、その銀行口座に別のカードの支払いがあったり、別の口座から別の支払いがあったり。 支払いが増えるほど、「何を使うと、いつ、どこから支払われるのか」が分かりにくくなります。 PaymentFlowは、そんな**支払いの流れを整理しておくためのアプリ**です。 クレジットカードや銀行口座などを登録して、支払いが発生する日や、どこから支払うのかを記録しておけます。 ■ こんなときに ・クレジットカードを複数使っている ・カードによって支払日が違う ・複数の銀行口座を使っている ・「このカードはどの口座から引き落とされる？」となる ・毎月の支払いを整理しておきたい ・支払いの流れを把握しておきたい ■ PaymentFlow 支払いの金額を細かく記録する家計簿ではありません。 「何を使う」 ↓ 「いつ支払う」 ↓ 「どこから支払う」 そんな**お金の支払いの流れを整理する**ためのシンプルなアプリです。 毎月の支払いを、もっと分かりやすく。 PaymentFlowで支払いの流れを管理しましょう。