Contactio vs HelixNotes

Clean up your contacts. Keep your data private. Scan your contacts directly on your device to find duplicates and data issues. Everything stays local. No cloud upload. No tracking. What it does On-device contact scanning for duplicates and data problems Smart duplicate detection across name, phone, email, and other fields Review duplicate groups and merge contacts by selecting the best master contact Preview exactly what will be kept before merging and exclude unwanted items Fix common contact issues Missing name Missing first name or last name Missing phone number Missing organization, inferred from email domain Broken or messy names with extra spaces, strange characters, or casing issues Powerful tools Bulk actions to merge or delete multiple contacts in one step Optional backup before merge and Undo via the in-app Merge Archive (vCard restore) Organization standardization to merge and normalize different organization variants Fast search across scan results to find people, companies, phone numbers, or emails Optional filtering using Contacts app groups and lists Privacy first All processing happens on your device No cloud upload No data sharing

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.