Calclin vs PO!N

A calculator memo app with history that keeps your calculation process visible like a paper roll. Switch between calculator input and formula input to handle everything from everyday math to calculations you want to keep as records. ■ Calculator mode and Formula mode Calculator mode evaluates left to right (5+5×2=20). Formula mode respects operator precedence (5+5×2=15) and supports parentheses and roots. Switch anytime from the input row, changing the calculation style without leaving the active input area. ■ Paper-roll style history Expressions and answers stay on the roll from the top, so you can see the flow of your calculation at a glance. Subtle side lines and top shading keep each frame easy to distinguish, even with multiple rolls. In calculator mode, a running total can be shown while you type. ■ Edit rows and add notes In calculator mode, tap any roll row to edit and recalculate. Add a note to any history entry. Swipe left to delete; swipe right to add a memo, copy the expression, or copy the answer. ■ PDF export Export a calculation roll as a PDF whenever you want to keep it. ■ Use multiple calculators side by side Up to a triple deck. Add or remove panels with the [+][−] header buttons, swipe or tap to switch, and double-tap to toggle between 1-panel and 2-panel views. ■ Unit-aware calculations Calculate with units of length, area, volume, and weight. Press a different unit key to change only the unit, or press the same unit key again to convert the number. Tap an underlined unit to pick from the conversion list. ■ TAX+ and TAX− keys Add tax to, or remove tax from, the value you are entering or the answer you just calculated. Set up to three tax rates; each key shows its rate. ■ Customizable keyboard Long-press any key to define it, and merge keys vertically or horizontally to create larger keys. Switch between 5 layouts (30 keys each), and export or import your arrangement. ■ Flexible display settings Choose the decimal point and grouping symbols, the grouping style (every 3 or 4 digits, Indian style), the number of decimal digits, and the rounding mode (including round half to even). Answers are kept at full precision; rounded answers are marked with "≒", and tapping one shows every digit. Pick Auto, Light, or Dark appearance, and enlarge or reduce text size. Your settings are restored on next launch. ■ Beginner and Expert modes Beginner mode shows labels and tips for each button. Once you are comfortable, Expert mode unlocks advanced operations such as long-press key editing. The calculation engine uses C/C++ fixed-point decimal, stored internally in BCD arrays. Note: Data is not encrypted. Please do not store personal or confidential information.

【 Write like you’re texting. Capture ideas in 1 second. 】 "I want to take a note, but opening an app feels like a chore." "I write things down, but never look at them again." PO!N solves these problems. It is a simple, chat-style memo app designed for speed and serendipity. Just open the app and start typing—no titles, no folders, just pure thought flow. ◇ Why Choose PO!N? 1. Chat-Style Interface: Write Instantly The moment you open the app, you are ready to type. It feels just like messaging a friend, but you are chatting with yourself. Capture your "brain dump" instantly before the idea fades away. 2. Zero Organization: Light automatic categorization Stop worrying about sorting. PO!N analyzes your text and automatically assigns tags like "Idea," "Insight," "Memo," "Record," or "Task." You focus on writing; we handle the rest. 3. Revisit Your Thoughts: The "PO!N" Notification This is the magic of PO!N. Your past notes will randomly "pop" back up as notifications. A thought from last week or a quote from last month might be exactly what you need to solve a problem today. 4. Visualize Your History View your thought trails in a clean Calendar or List view. Perfect for keeping a one-line diary, tracking your mood, or logging daily achievements. ◇ Perfect For: Brain Dumping: Clear your mind quickly. Idea Storage: Capture fleeting inspiration. Self-Talk: A private space for your honest thoughts. Minimalists: No complex features, just simple notes. "Your past words become future inspiration." Download PO!N today and start a new cycle of ideas.