ergosum vs Zeti Editor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ergosum
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Ergosum is your second brain. Write notes the way you would in Notion — and an AI memory layer remembers everything, so your knowledge is always one question away. Notes that become memory Write in a clean block editor — text, bullets, todos, markdown. Every page you create joins your personal knowledge base. AI that actually remembers you Most AI chats forget the moment you close them. Ergosum's AI carries context across every conversation — it knows what you've written, what you're working on, and what you've decided. Ask "what did I think about X last month?" and get an answer. Recall, not search Stop hunting through folders. Ask in plain language and get back the exact note, idea, or decision you're looking for. Structured when you want it, fluid when you don't Nested pages, workspaces, private and shared spaces. Use it like Notion when you need structure. Let the AI do the organizing when you don't. Built for thinkers Students, founders, researchers, writers — anyone whose work lives in their notes. Light, dark, and Catppuccin themes. Page history. Sharing. Cogito, ergo sum. Your thoughts, remembered. Terms of Use (EULA): https://ergosum.cc/terms
Zeti Editor
A minimalist Markdown editor focused on distraction-free writing and note-taking. It supports live rendering, wiki links, and on-device AI for summarization and tagging. Your notes remain plain text files, ensuring no vendor lock-in and easy syncing across devices.
- Live Markdown rendering
- Plain .md file support
- Wiki links and #tags
- Constellation note map
- On-device AI summarization
- Export to PDF
- Syntax highlighting for text, HTML, CSS
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Zeti Editor is a Markdown editor that gets out of your way – a calm, focused canvas for writing, thinking, and note-taking Your notes are plain .md files in a folder you choose. No proprietary format, no account, no lock-in. Keep that folder locally or in iCloud Drive, Google Drive, or a git repo – how you sync is up to you, and your writing stays readable anywhere, on any device, for good WHAT YOU GET - Live Markdown: headings, bold, italics, lists, tasks, quotes, code, tables, links, and images render as you write. Inline formatting marks fade from view so your words stay front and center, and the line you're editing always shows the raw Markdown - Source mode: switch to plain raw Markdown any time with a single shortcut - Tasks you can tick: tap a checkbox to mark a to-do done, right inside your note - Actions & command palette: transform your text in a keystroke – open a command palette to run built-in text actions, write your own in JavaScript, or use on-device AI actions on supported hardware. Everything runs locally, with no network. For more information, visit: https://ronz.dev/zeti/docs/ - Shortcuts, Siri & Spotlight: create, open, append to, and search your notes from the Shortcuts app, Siri, and Spotlight - Export & share: turn any note into a PDF, or share your Markdown files anywhere – all through the native share sheet - Beyond Markdown: open and edit plain text, HTML, and CSS files too, with syntax highlighting - Linked notes: connect ideas with [[wiki links]] and #tags, with autocomplete as you type. Every link works both ways – open any note to see the notes that link back to it - Constellation: see your notes as a connected map, built from your links and shared tags. Tap a note to open it, search to highlight, and pinch to zoom - On-device intelligence: notes are summarized and tagged automatically using Apple Intelligence – privately, on your device, on supported hardware - Multiple windows on Mac, iPad, and Vision Pro: open several at once, each on its own folder, and work across projects side by side - Sync-safe: when iCloud Drive, git, or another app changes or deletes an open note, Zeti notices – it never overwrites your edits - Fast search across note titles and full content – accents and case don't matter - Document outline to jump between headings in long files - Pin important notes to the top, select several to pin or delete them at once, and see details like created and modified dates at a glance - Live word count and reading-time estimate - Light and dark themes, adjustable text size, optional line numbers, and a quietly beautiful design built with Apple's latest materials - Accessible: VoiceOver reads your notes cleanly, without Markdown symbols, and text follows your Dynamic Type size on iPhone, iPad, and Vision Pro - Speaks your language: English, German, Spanish, French, Italian, and Simplified Chinese – and you can pick Zeti's language separately from your device's - A short set of example notes to get you started – keep them, or remove them and reload them from Settings any time PRIVATE BY DESIGN Everything stays on your device. Zeti has no network access at all – no accounts, no servers, no tracking, no ads. Even your custom actions and on-device AI run entirely on your device. Your words never leave your device, and your .md files stay exactly where you put them BUILT FOR APPLE PLATFORMS Designed natively for Mac, iPad, iPhone, and Vision Pro with keyboard shortcuts, a sidebar that keeps your folder one tap away, and multiple windows on Mac, iPad, and Vision Pro Minimal yet powerful!
Screenshots
Verdict
The clearest difference is in-app purchases: Zeti Editor at none against ergosum's 1. Zeti Editor also leads on device support (4 vs 2). ergosum's advantage is iOS requirement (17.6 vs 26.0). On price and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. ergosum sells 1 in-app purchase, starting at $14.99 per month. Zeti Editor asks for nothing beyond the download.
| Parameter | ergosum | Zeti Editor |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | — | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Free |
| Devices | iPhone, iPad | iPhone, iPad, Mac, Vision Pro — better |
| Requires iOS | 17.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 3 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Peter Subrata | Ronny Makhoul |
In-app purchases
ergosum
- Pro$14.991 Month
Zeti Editor
No in-app purchases









