Comparison

PureOpen vs Dutiful

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

Head to head
About

PureOpen

Features
Read full description

PureOpen is a Markdown editor for Mac and iPhone built for right-to-left writing. Most editors treat RTL as a switch: turn it on and the whole document flips, which breaks the moment you write Hebrew or Arabic with English words in it. PureOpen decides direction per block instead. Every paragraph, heading and list item takes its direction from the first strong character in it — so a mixed document displays correctly with no setting, and with no direction marks written into your file. Files open in tabs, the way a browser opens pages, and your changes are on disk 600ms after you stop typing. RIGHT-TO-LEFT, PER BLOCK • RTL and LTR live side by side in one file. A Hebrew paragraph aligns right, the English paragraph under it aligns left, and each stays that way as you edit. • A Hebrew or Arabic sentence with English terms, code spans and links inside it reads correctly — the block stays RTL and the Latin runs sit where they belong. • A block with no strong character inherits the direction of the block above it, so blank lines and numbers don't break the flow. • Nothing is added to your Markdown to make this work: no RTL marks, no wrapper tags. The file stays portable. OPEN IT FROM THE FILE, NOT FROM THE APP • Right-click a Markdown file in Finder — or long-press it in Files on iPhone and iPad — and PureOpen sits at the top of "Open With". One click and the document is open in a tab in the window you already have. • No launching the app first, no file picker, no importing into a library. Double-click works the same way, and so does dragging a file onto the window. • Registered as the owner and editor of .md, .markdown, .mdown and .mkd. TABS • Every file opens in its own tab. ⌘1–⌘9 jump by position, Ctrl+Tab cycles, middle-click closes, and ⌘W closes the tab rather than the window. • The tabs you had open come back the next time you launch. SAVING • Autosave writes 600ms after you stop typing, and again on tab switch, tab close and window blur. A grey dot marks a tab with unsaved content. • If the file changes on disk — another editor, a sync client — it is reloaded quietly and your scroll position is kept. If it is deleted, editing locks so stale content is not written back over it. • Opening a file doesn't reformat it: an edit that didn't actually change the content doesn't trigger a write. EDITING • 17 formatting buttons: headings 1–4, bold, italic, underline, strikethrough, bullet, numbered and task lists, subscript, superscript, quote, inline code, code block and horizontal rule. • Each button reflects the block and the marks under the cursor, and updates as the cursor moves. • Underline, subscript and superscript are kept as HTML rather than dropped when the file is saved. PRINTING AND PDF • Print what you see. The page is the document as the editor renders it — headings, tables, task lists, code blocks, Hebrew and English side by side — without the tabs and the toolbar around them. • Export the same page straight to a PDF file, without going through the print dialog to find "Save as PDF". • Nothing is rendered a second time for paper, so what prints is what you were looking at. Pages break between lines, and the page is always light even when the app is in dark mode. ALSO • On iPhone and iPad, files opened from Files are edited in place — not copied into the app. • Dark mode follows the system setting. • Files past roughly 4 million characters open read-only as raw text, so the interface doesn't stall. • No network, no account, no telemetry. Your files stay on your device. PureOpen is free, with no in-app purchases.

About

Dutiful

This app transforms confusing mail, bills, and letters into clear summaries with actionable next steps and deadlines. It helps you understand important information quickly and set reminders to never miss a due date. Share translated reminders with family members to keep everyone informed.

Highlights
  • AI-powered mail summarization
  • Identifies actionable next steps
  • Extracts and reminds of deadlines
  • Translates reminders for family
  • Reduces mental load from paperwork
  • Organizes important documents
Features
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Got long confusing mail, official letters, bills, school notes, and parent mail stop piling up? Dutiful turns confusing letters into clear summaries, deadlines, and next steps in seconds. Understand every letter faster Scan a letter, bill, notice, form, school handout, or piece of mail with your camera. Dutiful: AI Mail Scanner turns long, stressful paperwork into a simple smart summary that explains what the mail says, why it matters, and what you may need to do next. No more rereading the same paragraph five times. No more guessing what is urgent. Get clear next best steps Dutiful identifies important actions hidden inside everyday mail. See whether you need to pay, call, sign, reply, schedule, upload a document, or save something for later. Each scan becomes a practical action plan, so you can move from “I’ll deal with this later” to “I know exactly what to do.” Never miss an important deadline Dates can be easy to overlook, especially when mail arrives for you, your kids, and your parents. Dutiful finds due dates, appointment dates, renewal dates, payment deadlines, and response windows, then helps you set smart reminders before the deadline. Get nudges early enough to take action, not when it is already too late. Share reminders with family in their language Caring for other people often means translating, explaining, and following up. Dutiful helps you send a clear reminder to a family member in their language, so everyone understands what needs attention. Share a simple summary, deadline, or next step with a parent, partner, adult child, caregiver, or sibling without rewriting the whole letter yourself. Built for busy brains and real life admin Paperwork is not just paper. It is mental load. Dutiful helps reduce the clutter of unopened envelopes, school forms, medical notices, insurance letters, government mail, appointment reminders, and bills. Instead of turning your mail pile into another source of guilt, the app helps you capture it, understand it, and take the next step with less overwhelm. Dutiful is especially helpful for people managing home admin, family logistics, and care tasks while juggling work, parenting, ADHD, errands, appointments, and aging parents. Use it when a school letter comes home in a backpack, when a medical bill arrives for a parent, when an insurance notice looks confusing, or when a deadline is buried in a long document. If you are the person everyone relies on to remember forms, payments, appointments, and follow-ups, Dutiful gives you a calmer way to stay on top of it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://dutiful-privacy.apps.lingcode.dev/privacy.html

Screenshots

PureOpen4 screens
Dutiful4 screens

Verdict

The call

The clearest difference is in-app purchases: PureOpen at none against Dutiful's 2. PureOpen also leads on device support (4 vs 1) and iOS requirement (15.0 vs 17.0). Dutiful's advantage is update cadence (every 3 days vs every 9 days). 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Dutiful sells 2 in-app purchases, starting at $7.99 per month. PureOpen asks for nothing beyond the download.

UpkeepUpdate frequency

PureOpen ships an update every 9 days, Dutiful every 3 days. Both last shipped on October 31, 2026.

Scorecard4 real differences · 5 level
PureOpen versus Dutiful: the parameters behind the verdict, then further details
ParameterPureOpenDutiful
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 daysEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod, Mac — betteriPhone
Requires iOS15.0 — better17.0
Further details — not scored
Size5 MB22 MB
Age rating4+4+
DeveloperYechiel Ben DavidAi Ling You

In-app purchases

None

PureOpen

No in-app purchases

2 purchases

Dutiful

Subscriptions2
  • Family Guard Monthly$7.991 Month
  • Family Guard Annual7 Days trial$39.991 Year

Questions

Is PureOpen free?
PureOpen is free to download, with no in-app purchases.
Is Dutiful free?
Dutiful is free to download, with in-app purchases available.
Do PureOpen or Dutiful have ads?
Neither PureOpen nor Dutiful shows ads.
Which is updated more often, PureOpen or Dutiful?
PureOpen ships an update every 9 days, and Dutiful every 3 days. Most recently, PureOpen was updated on October 31, 2026 and Dutiful on October 31, 2026.

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