Comparison

OWrite Pro vs OneOpen

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

Head to head
About

OWrite Pro

This app integrates notes, tasks, habit tracking, mindful focus sessions, and important date reminders into a single, organized platform. Capture ideas, break down goals, build consistent habits, and stay focused on what matters most.

Highlights
  • Integrated notes with rich text formatting and photo support
  • Habit tracking with daily streaks or cumulative targets
  • Task management with subtasks and progress tracking
  • Mindful focus timer with cumulative hour goals and statistics
  • Important date tracking with countdowns and widgets
  • Flexible reminder system with various scheduling options
  • Home screen for an overview of daily activities
Features
Read full description

OWrite Pro brings notes, plans, habits, focus, outdoor workouts, reminders, and important dates into one calm personal space. Write down what matters, take the next small step, and make room to move. WRITE DOWN IDEAS WORTH KEEPING Use rich-text notes for journals, plans, excerpts, drafts, or unnamed thoughts. Add photos, style your text, search your content, restore deleted items from Trash, and turn a note into an image to save or share. BUILD HABITS AT YOUR OWN PACE Choose daily streaks or cumulative targets for reading, stretching, exercise, and more. Set dates, colors, icons, and reminders. Check in with one tap and review progress on the calendar. BREAK GOALS INTO SMALL STEPS Create tasks for long-term plans or everyday work. Set deadlines, reminders, tags, and colors. Divide a goal into scheduled subtasks with checklists and notes, then review progress in week, month, and timeline views. GO OUTSIDE AND MOVE Record outdoor runs, walks, hikes, and rides. Follow your route and live duration, distance, pace or speed, and calories. Pause or resume, mark splits, revisit workout details, and explore distance trends. Supported devices can show an active workout with Live Activities on the Lock Screen and Dynamic Island. Routes need Location permission; Health data requires authorization, and heart-rate readings depend on a compatible device such as Apple Watch. FOCUS WITH INTENTION Create a focus goal and record sessions with an immersive timer. Review daily, weekly, monthly, and yearly statistics. Follow a running timer through Live Activities on supported devices. As a goal nears completion, the timer becomes a countdown and your effort blooms into a mathematical flower. KEEP IMPORTANT DATES IN SIGHT Save birthdays, trips, anniversaries, launches, and other days worth anticipating. See countdowns and elapsed days, choose reminders and recurrence, add a photo or Live Photo, and display a selected date in the Home Screen widget. REMINDERS THAT FIT YOUR DAY Create one-time reminders or repeat them on selected weekdays, monthly, or yearly. Add notes and images, then manage reminders in one dedicated center. ONE HOME FOR YOUR LIFE See habits, tasks, recent notes, focus goals, workouts, and important dates together. Search titles, content, and tags or filter by color. Completing habit, task, and focus goals unlocks distinctive Maurer Rose achievements. DESIGNED FOR YOU OWrite supports VoiceOver, Voice Control, accessible actions and widgets, Reduced Motion, enhanced contrast, appearance choices, and 12- or 24-hour time. Data stays on your device by default, with optional iCloud sync. Protect app content with Face ID or the device passcode. OWrite Pro offers an optional lifetime purchase and auto-renewable monthly or annual subscriptions. Upgrading unlocks all Pro features. Actual prices appear on the in-app purchase screen and App Store confirmation sheet. Manage or cancel subscriptions in Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy: https://github.com/HuangRobin/OWrite/blob/master/OWrite%20Terms%20of%20Service%20and%20Privacy%20Policy

About

OneOpen

View a wide range of file types, including documents, web pages, CAD drawings, and 3D models, directly on your iPhone and iPad. Easily open and manage archives, EPUBs, emails, and certificates. Offers basic viewing for free with advanced features available through a subscription.

Highlights
  • Multi-format file viewing
  • HTML and Markdown preview
  • CAD and 3D model rotation
  • Archive browsing and extraction
  • EPUB reader
  • Certificate inspection
  • File information display
Features
Read full description

OneOpen is a multi-format file viewer for iPhone and iPad. Open documents, web pages, CAD drawings, 3D models and archives from Files, Mail and apps that support document sharing. HTML and Markdown Preview HTML, HTM and XHTML pages. Read Markdown / MD notes with headings, a table of contents, tables, code fences, task lists, footnotes and reference links. ZIP websites retain local images, styles and relative resources. Markdown in packages can display supported local images. Ordinary HTML allows restricted HTTPS/WSS networking by default, with offline and Safe Preview options. Markdown does not run scripts or load remote images. CAD drawings and 3D models (Advanced) • Pan, zoom and toggle layers in supported DWG/DXF 2D model-space drawings. • Rotate STEP/STP, IGES/IGS, BREP/BRP, STL, OBJ and PLY models, including PLY vertex colors and point clouds. • ZIP a complete OBJ model folder to load supported MTL materials, PNG/JPEG textures, normals, transparency and groups. A standalone OBJ shows geometry without reading private neighboring files. • Preview supported static GLB / glTF 2.0 geometry, nodes, basic materials and PNG/JPEG textures. Model ZIPs retain relative resources. JSON and model information have separate views. • USDZ starts in object view; choose AR when needed. • Included models and engineering drawings demonstrate supported features. Everyday viewing is free Read PDF, Office/iWork, images, audio/video, JSON, XML, YAML, CSV, code and text. PDF supports continuous reading, zoom, search and page controls that hide while scrolling. Edit supported text in an independent working copy. Archives and EPUB Browse supported ZIP/7Z/RAR/TAR, GZ/BZ2/XZ/Zstandard/LZ4/LZMA/Z, CAB/CPIO/AR/XAR/ISO9660/LHA and TAR combinations. Open/share entries; extract to Files. ZIP/EPUB are free; others need Advanced Access. EPUB follows the declared chapter order, with a table of contents, previous/next controls, current-chapter search and reading settings. Pages stay offline. A chapter error keeps navigation available. DRM, media overlays, annotations and whole-book search are unsupported. Email, certificates and information Decode EML headers, body text, common character encodings and attachment filenames. Open or share readable attachments independently. HTML email becomes text without loading remote content. Decryption, signature verification and TNEF extraction are not provided. Inspect public CER, DER, CRT and PEM certificate subjects, issuers, validity, algorithms, public keys, usages and SHA-256 fingerprints. Certificates are never installed and device trust is not evaluated. File Information includes PDF metadata, image/camera properties, media tracks, text encoding/line counts and archive summaries. Open from other apps Skippable onboarding uses real iOS screenshots to explain More, Edit and favorite ordering in the share sheet. Revisit it in Settings. Categories, Recents and widgets help you return to files. Advanced Access and compatibility An annual membership or a one-time lifetime purchase unlocks the same specialized features. Check format details before purchasing. DWG supports selected 2D model-space content; DXF supports text files. CAD editing, engineering measurement, native SolidWorks and full external references are unsupported. Compressed glTF geometry, skins and active morphs require conversion. Animation is static; advanced materials may be approximate. ZIP complete model folders, or use self-contained GLB for single-file sharing. Supported ZIP AES/ZipCrypto, 7z AES and RAR4/5 AES/solid archives can open; multipart, Deflate64, Implode and ARJ are unsupported. Native previews depend on iOS codecs/variants. Privacy No account, ads, analytics or document uploads. Non-HTML previews stay offline. HTML and ZIP websites may run JavaScript and connect over HTTPS/WSS in an isolated environment; offline and Safe Preview modes are available. Terms: https://oneapps.studio/terms Privacy: https://oneapps.studio/privacy

Screenshots

OWrite Pro4 screens
OneOpen4 screens

Verdict

The call

The clearest difference is review sentiment: OWrite Pro at 100% against OneOpen's 57%. On price, update cadence, ads and in-app purchases 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. OWrite Pro sells 5 in-app purchases, starting at $0.99 per month and OneOpen sells 2 in-app purchases, starting at $0.99 per year. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

OWrite Pro ships an update every 5 days, OneOpen every 4 days. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

Scorecard1 real difference · 9 level
OWrite Pro versus OneOpen: the parameters behind the verdict, then further details
ParameterOWrite ProOneOpen
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews — better57.1% of reviews
Number of ratings5 — better—
Update frequencyEvery 5 daysEvery 4 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size21 MB76 MB
Age rating4+4+
Developer琳钧 黄Freedom Dimension (shenzhen) Technology Co., Ltd

Customer experience

OWrite Pro

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews14 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

OneOpen

Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

In-app purchases

5 purchases

OWrite Pro

Subscriptions4
  • OWrite Pro Monthly1 Month trial$0.991 Month
  • OWrite Pro Monthly1 Month trial$1.991 Month
  • OWrite Pro Annual1 Month trial$9.991 Year
Show 1 more
  • OWrite Pro Annual1 Month trial$19.991 Year
One-time1
  • OWrite Pro Lifetime$12.99
2 purchases

OneOpen

Subscriptions1
  • Advanced Access Annual$0.991 Year
One-time1
  • Advanced Access LifetimeFree

Questions

Is OWrite Pro free?
OWrite Pro is free to download, with in-app purchases available.
Is OneOpen free?
OneOpen is free to download, with in-app purchases available.
Do OWrite Pro or OneOpen have ads?
Neither OWrite Pro nor OneOpen shows ads.
Which is updated more often, OWrite Pro or OneOpen?
OWrite Pro ships an update every 5 days, and OneOpen every 4 days. Most recently, OWrite Pro was updated on November 5, 2026 and OneOpen on November 6, 2026.

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