TriTab Calc vs BelliedMonkey Translator

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.

Meetings, videos, documents — translated as you listen, processed only on your device; the sentences you actually read come back as review cards. LIVE SUBTITLES (APP) Bilingual subtitles for whatever your device is playing. On Mac, the app listens to system audio and shows a floating subtitle bar that stays on top of any app, even full-screen video (macOS 26 or later). On iPhone, play a video or podcast out loud in any app, and a picture-in-picture window scrolls the original and the translation, sentence by sentence. Recognition happens on the device; Live Subtitles need iOS 26 / macOS 26. CONVERSATION · LIVE INTERPRETER (APP) Talk across a language gap. Both sides speak freely; each sentence is transcribed, translated and can be read aloud. Speech is recognised on the device, so the audio never leaves it. Requires iOS 26 / macOS 26. SYSTEM TRANSLATION (IPHONE) Select text in any app and tap Translate — BelliedMonkey answers with the engine you configured, in a small sheet, without leaving the app. Choose BelliedMonkey once in Settings › Apps › Translate › Default Translate App. Sentences you translate this way can go straight into your review deck. Requires iOS 18.4 or later. WEB PAGES, SIDE BY SIDE The Safari extension (also on Chrome and Firefox) keeps every paragraph's original text with the translation right below it. No switching tabs, no losing your place. VIDEO DUAL SUBTITLES YouTube, podcasts and web video get sentence-matched dual subtitles. No captions? Turn on AI transcript subtitles. DOCUMENT TRANSLATION Open a PDF, Word file or image and read it page by page, original and translation side by side. LEARN AS YOU READ Sentences you actually read can become review cards on a forgetting curve — read, listen and write practice, sentence notes and read-aloud. Optional sync lets your phone review what you read on your computer. YOUR ENGINE, YOUR CHOICE Bring your own AI service key, or any compatible endpoint. PRIVACY, SPELLED OUT Your keys and settings stay on your device. With your own key, text goes straight to the provider you chose and is not stored. Live Subtitles and on-device transcription never record audio. We send anonymous usage events (which features are used, never page content), and you can turn them off in Settings. No ads. The whole app is open source and free to download.