Suma Calc vs HelixNotes

Suma is a natural language calculator. Just type what you're thinking and get instant results. MATH & VARIABLES Type expressions naturally: (100 + 50) / 3, 2k * 12, 20% of 150. Create variables like price = 100 and reuse them on the next line. FUNCTIONS sqrt, abs, round, floor, ceil, min, max — plus constants like pi and e. UNIT CONVERSIONS Convert between 8 categories: length, weight, temperature, volume, area, speed, time, and data. Just type "100 km to miles" or "72 kg to lbs". DATE CALCULATIONS "today + 2 weeks", "days until Jan 1", or chain operations like "tomorrow + 3 months + 1 year". CURRENCY EXCHANGE 161 currencies with daily updated rates. Type "100 usd to eur" or use symbols like "$50 to gbp". Add math to conversions: "100 usd to eur + 10%". AGGREGATES Use "sum" or "avg" to total all your previous results. DESIGNED TO BE SIMPLE No buttons. No modes. No menus. Just a clean notepad where every line is calculated instantly. Tap any result to copy. Swipe to delete. Your work saves automatically. Beautiful light and dark themes. Works great on iPhone and iPad. Completely free. No ads. No subscriptions.

HelixNotes is a private, open-source Markdown notes app. Your notes remain standard Markdown files under your control. No account is required, and HelixNotes has no company-operated cloud. Write with a clean visual editor or switch to source mode when you want direct access to the Markdown. Organize your work with notebooks, tags, wiki links and full-text search. Features include: • Tasks collected from checklists across your notes • List and calendar views with priorities and due dates • Wiki links and an interactive graph view • Daily notes with a built-in calendar • Markdown tables, code blocks and syntax highlighting • KaTeX mathematical notation and Mermaid diagrams • Outline navigation and tag autocomplete • Version history and automatic backups • Light, dark and customizable themes • Optional WebDAV sync with your own server • Optional AI tools using your own provider Nothing leaves your device unless you enable a feature that connects to an external service. Your notes stay readable outside HelixNotes, without a proprietary format or platform lock-in. HelixNotes is free software released under the GNU AGPLv3. Its source code is publicly available on GitLab.