Comparison

Kosshi Outliner vs ScanWave Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Kosshi Outliner

This native outliner app allows you to organize thoughts with a hierarchical structure, zoom into specific sections, and format text using Markdown. It supports images, sketches, internal links, and reminders, with seamless iCloud sync across Apple devices.

Highlights
  • Hierarchical outlining with indentation
  • Zoom into specific rows
  • Markdown formatting
  • Image and file embedding
  • Apple Pencil sketches
  • Internal linking
  • Reminders and calendar sync
Features
Read full description

Kosshi is a fast, native outliner. Simple and smooth on large outlines. Available on Mac, iPhone, and iPad — one purchase covers all three. Outliner Hit Tab to indent and build a hierarchy. Collapse what you don't need, drag to move things around. Zoom In / Zoom Out Zoom into any row and only its contents are shown. Breadcrumbs tell you where you are, and you can jump home anytime. Markdown Bold, italic, highlight, links, checkboxes, code blocks, and LaTeX math all render right where you type. Formatting markers only appear while editing — move away and they're gone. Images & Files Add images by pasting or dragging, and resize however you want. PDFs and videos show as inline previews too. Apple Pencil Sketches Draw sketches with Apple Pencil on iPad. They sync to Mac and iPhone through iCloud. Search Cmd+F to search your whole outline. Matches get highlighted. Replace works too. Dark Mode Switch between light and dark themes. Automatically follows your system setting. Tags Use #tags to categorize and @tags for dates or status. Filter from the sidebar. Internal Links Type [[ to search and link to another row. Build a web of connected outlines. Bookmarks Press Cmd+D to bookmark a row. Bookmarks appear at the top of the sidebar. Prose Mode Switch a row to Prose Mode for long-form writing. Bullets disappear and children stay expanded. Reminders & Calendar Any @tag with a date syncs to Apple Reminders or Calendar. Use @todo(3/15), @meeting(every monday 10:00), and so on. Keyboard Shortcuts Collapse, move, indent — all without reaching for the mouse. Export Export as Markdown, OPML, or plain text. Your data is never locked in. Auto Backup Restore past outlines from daily backups. Feel free to delete outlines you no longer need. iCloud Sync When iCloud is available, your outlines sync across Apple devices via CloudKit. Data is stored in your iCloud account, and the developer cannot access its contents. Pay Once Built natively for speed. Launches quickly and works offline. One-time purchase covers Mac, iPhone, and iPad — no subscription, no account required. A 7-day free trial is available. Feedback Feature requests and bug reports are always welcome. Reach us via the contact form at https://kosshi.app/contact or on X at @shirokumamake.

About

ScanWave Pro

Features
Read full description

Scanwave Pro is a scanner you buy once and own forever — no subscriptions, no monthly fees, no "unlock pro" pop-ups. Built for the Japanese practice of copying ID cards onto A4 paper. Capture an ID and lay it onto a page in Actual Size or Fill Page layout — the standard formats for Residence Card, Driver's License, and Health Insurance Card copies that landlords, banks, and city halls ask for every day. ONE-TIME PAYMENT • Pay once, use forever • No subscription, no in-app purchases • All updates included for life • No "free trial that auto-renews" tricks DOCUMENT MODE • Multi-page capture with automatic edge detection • Manual corner adjustment with magnifier loupe • Filters: Original, Grayscale, Black & White, Enhance • Drag-to-reorder pages, retake, swipe-to-delete • Multi-page PDF export with 1-up, 2-up, or 4-up layouts ID MODE • Front-only or front + back capture • Composed onto A4 in actual size or fill-page layout EXPORT • Save as JPEG or PNG to Photos • Save as PDF to Files (visible under On My iPhone → ScanWave) • Share to AirDrop, Mail, Messages, or any installed app • Multi-select on the Home screen for bulk share or delete PRIVACY • All processing on device • No cloud, no account, no analytics, no tracking • No third-party SDKs • Photos and documents stay on your iPhone or iPad LANGUAGES English, 日本語, नेपाली. Switch any time from the globe button on the Home screen.

Screenshots

Kosshi Outliner4 screens
ScanWave Pro4 screens

Verdict

The call

The clearest difference is in-app purchases: ScanWave Pro at none against Kosshi Outliner's 1. Kosshi Outliner's advantage is update cadence (every 3 days vs every 2 weeks). On price, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Kosshi Outliner sells 1 one-off in-app purchase. ScanWave Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Kosshi Outliner ships an update every 3 days, ScanWave Pro every 2 weeks. The most recent releases landed on November 5, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Kosshi Outliner versus ScanWave Pro: the parameters behind the verdict, then further details
ParameterKosshi OutlinerScanWave Pro
PriceFreeFree
Rating5.0 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 3 days — betterEvery 2 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhone, iPad, Mac — betteriPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size30 MB41 MB
Age rating4+4+
DeveloperJunichi SatoBhupesh Gurung

In-app purchases

1 purchases

Kosshi Outliner

One-time1
  • Kosshi Outliner$24.99
None

ScanWave Pro

No in-app purchases

Questions

Is Kosshi Outliner free?
Kosshi Outliner is free to download, with in-app purchases available.
Is ScanWave Pro free?
ScanWave Pro is free to download, with no in-app purchases.
Do Kosshi Outliner or ScanWave Pro have ads?
Neither Kosshi Outliner nor ScanWave Pro shows ads.
Which is updated more often, Kosshi Outliner or ScanWave Pro?
Kosshi Outliner ships an update every 3 days, and ScanWave Pro every 2 weeks. Most recently, Kosshi Outliner was updated on November 5, 2026 and ScanWave Pro on October 31, 2026.

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