Zen Slate vs ScrollArc
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Zen Slate
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Turn voice memos into notes you can organize. Zen Slate brings rich-text notes, voice transcription and to-dos together, with camera scanning and Apple Pencil drawing on supported devices. WRITE, RECORD AND SCAN Use headings, bold, italics, quotes, code blocks, highlights and checklists. Add photos, PDFs and files. Record a voice note with on-device transcription, or scan a document with the camera on supported devices. Transcription availability depends on language, device and speech support. NOTES THAT TURN INTO ACTION Keep to-dos alongside your notes. Add a date, reminder, priority or repeat to a task, then see tasks together and plan them on a calendar. Checklists inside a note stay with that note. Optional Apple Reminders integration is off until you choose it. DRAW ON IPAD Sketch with Apple Pencil using pens, markers, a highlighter, eraser, lasso and ruler. Drawings remain editable after you save them. FIND YOUR WAY BACK Organize with nested categories, tags and smart folders. Search your writing, bookmark a note, and link related notes with double brackets. Backlinks show where a note is referenced. BRING YOUR NOTES WITH YOU Import Markdown folders with their structure, tags and dates. Import supported Evernote ENEX, RTF and HTML files. Export your library as JSON when you need it. YOUR DEVICE AND YOUR ICLOUD No Zen Slate account is required. Notes are stored on your device; sync uses your own iCloud account rather than our servers. Supported devices can protect individual notes with biometric authentication. CAPTURE WITHOUT THE DETOUR Use widgets, the share sheet, Shortcuts and Spotlight to reach your notes. Features vary by platform; camera scanning and Apple Pencil drawing require supported iPhone or iPad hardware. FREE AND PRO Start with five slates for free. Pro removes the limit and adds sync, widgets, backup and export. Choose a yearly subscription or a one-time purchase. The one-time purchase does not renew. Subscriptions renew automatically unless canceled at least 24 hours before the current period ends. Manage or cancel in your Apple Account subscription settings. See current pricing in the app. Privacy Policy: https://www.zenproducts.ai/apps/zen-slate/privacy Terms of Use: https://www.zenproducts.ai/apps/zen-slate/terms Support: hello@zenproducts.ai
ScrollArc
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Finish the long AI answers and repository documents worth keeping. ScrollArc turns AI conversation exports, Markdown files, and GitHub, GitLab, or Bitbucket documents into one calm reading library—with your place saved automatically. AI conversations, ready to read • Import supported ZIP and JSON conversation exports • Preview conversations and choose only what you want to save • Convert supported text on your device without sending it to an AI model • Keep imported documents available offline GitHub, GitLab, and Bitbucket in one reader • Import public Markdown from all three providers for free • Connect private repositories with ScrollArc Plus • Keep READMEs, specifications, runbooks, and technical notes together • Preview additions and removals before updating the local copy Built to finish long documents • Return to the exact reading position you left • Use Reading Map to see headings, progress, and structured sections • Search inside a document and move between results • Adjust text size, line spacing, content width, and themes Markdown that stays readable • Syntax-highlighted code, tables, task lists, quotes, links, and images • Math and Mermaid diagrams rendered on your device • Full-screen Mermaid viewer with pinch-to-zoom Keep, compare, and take your work with you • Export the original Markdown for free • Export PDF or self-contained HTML with ScrollArc Plus • Create highlights and bookmarks with Plus • Keep local version history, compare readable diffs, and restore an earlier version with Plus Private by design No account. No ads. Your document text stays in the app's local storage. ScrollArc does not upload your documents or analyze them with AI. You can delete one document or clear the entire local library at any time. Release builds send limited feature-use totals and crash diagnostics; document text, titles, filenames, search terms, repository names, links, and annotations are never included. Free and ScrollArc Plus The free version saves up to ten documents and includes the complete reading experience, AI export import, public repository import, and Markdown export. ScrollArc Plus removes the document limit and adds private GitHub, GitLab, and Bitbucket connections, local version history with diff and restore, PDF and HTML export, and new highlights and bookmarks. Existing documents and annotations are not deleted when a subscription ends. Monthly and yearly plans are available; localized prices and billing periods appear on the purchase screen. Manage or cancel through your Apple Account and restore an eligible purchase from Settings. ScrollArc is a focused AI Markdown reader—not an editor or AI chat service. It gives long conversations, reports, READMEs, specifications, and technical notes a better place to be read. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is iOS requirement: ScrollArc at 15.0 against Zen Slate's 17.0. On price, ads, in-app purchases and device support 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. Zen Slate sells 2 in-app purchases, starting at $19.99 per year and ScrollArc sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
| Parameter | Zen Slate | ScrollArc |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 days | — |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 23 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | ZenProducts Technologies Pvt. Ltd. | ByungJo Ahn |
In-app purchases
Zen Slate
- Zen Slate Pro Annual$19.991 Year
- Zen Slate, bought once$49.99
ScrollArc
- ScrollArc Plus Monthly$1.991 Month
- ScrollArc Plus Annual$17.991 Year









