Comparison

OneOpen vs Hxmy Task

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

Head to head
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

About

Hxmy Task

This app allows you to create and manage tasks using your voice. It offers advanced features like intelligent date recognition, recurring task setup, and data privacy with on-device storage or optional iCloud sync. Organize your to-dos with color-coded lists, subtasks, and customizable views.

Highlights
  • Voice input for tasks
  • Intelligent date and time recognition
  • On-device data storage
  • Optional iCloud sync
  • Color-coded lists and subtasks
  • Home and Lock Screen widgets
  • JSON export/import
Features
Read full description

Hxmy Task is a fast, private task manager for iPhone, iPad and Mac. No account to create, no ads, no tracking, and nothing to subscribe to. SPEAK IT, DON'T TYPE IT Hold the microphone and just say the task. Hxmy Task writes it down and works out the date, the time and how often it repeats — "pay the rent on the 1st of every month", "water the plants every other day", "call the dentist tomorrow afternoon". Date and time recognition runs entirely on your device and understands English, Chinese, Japanese and Korean, so it keeps working with no network and no cloud account. The language you speak is yours to pick, separately from the language the app is in. OR JUST TELL SIRI "Add a task to Hxmy Task" captures it without opening the app, and Siri reads back what it understood so you know it landed. WHEN THE LIST IS TOO LONG Tap the sparkle and Hxmy Task picks the three things worth doing first, each with one short reason. It picks only from your own list and can never invent a task, and the reasons come back in whatever language your tasks are written in. On device by default. ONE PLACE FOR TODAY Today gathers everything due across every list, grouped into Overdue, Today, Tomorrow and the days after, so you never have to open each list to find out what matters. Star the few things that actually matter and they get their own view. REPEATS THAT MATCH REAL LIFE Repeat every N days, weeks, months or years. For weekly, pick exactly which weekdays. For monthly, pick which days of the month — the 1st and the 15th, or the last payday of every month. End a series never, on a date, or after a number of times. A preview shows you the next few dates before you commit. BUILT FOR REAL LISTS Colour-coded lists, subtasks, notes, drag to reorder, drag between lists, three sort modes per list, and search across everything. Completed work collapses out of the way instead of cluttering the list. Anything you delete waits 30 days in the Trash, so a slip of the thumb is never final. YOUR DATA STAYS YOURS Everything is stored on your device by default. Turn on iCloud sync and your tasks travel through your own iCloud account — a private database only you can read. There is no server of ours in the middle, and no account for us to hold. Share a single list with a partner or a colleague when you want to; keep everything else to yourself. Changed your mind? Move a list back to this device and its copy in iCloud goes away — without deleting a single task. WORKS WITH THE REST OF THE SYSTEM Home Screen and Lock Screen widgets — tick a task straight from the widget without opening the app. Optional mirroring to Apple Calendar so tasks with a date show up alongside your events. Optional App Lock with Face ID, Touch ID or your passcode. TAKE IT WITH YOU Export a complete, readable JSON backup at any time, and import it back on any device. Coming from Google Tasks? Import a Google Takeout file directly, including repeating tasks. MADE TO BE USABLE Five colour themes and twelve list colours. Full Dynamic Type support up to the largest accessibility sizes. VoiceOver labels on every control. Available in English, Simplified Chinese, Japanese and Korean — and you can switch the app's language without changing the whole device. NO STRINGS No account. No ads. No analytics. No third-party SDKs of any kind. Buy it once — no subscriptions, no in-app purchases.

Screenshots

OneOpen4 screens
Hxmy Task4 screens

Verdict

The call

The clearest difference is price: OneOpen at Free against Hxmy Task's $1.99. OneOpen also leads on iOS requirement (17.0 vs 26.0). Hxmy Task's advantage is review sentiment (100% vs 57%) and in-app purchases (none vs 2). On update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

OneOpen is free to download; Hxmy Task costs $1.99 up front. OneOpen sells 2 in-app purchases, starting at $0.99 per year. Hxmy Task asks for nothing beyond the download.

UpkeepUpdate frequency

OneOpen ships an update every 4 days, Hxmy Task weekly. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
OneOpen versus Hxmy Task: the parameters behind the verdict, then further details
ParameterOneOpenHxmy Task
PriceFree — better$1.99
Rating—5.0 (1 ratings) — better
Positive reviews57.1% of reviews100.0% of reviews — better
Number of ratings—1 — better
Update frequencyEvery 4 days — betterWeekly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFreemium — betterPaid
DevicesiPhone, iPadiPhone, iPad, Mac — better
Requires iOS17.0 — better26.0
Further details — not scored
Size76 MB7 MB
Age rating4+4+
DeveloperFreedom Dimension (shenzhen) Technology Co., LtdYuhang XIE

Customer experience

OneOpen

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

Hxmy Task

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

OneOpen

Subscriptions1
  • Advanced Access Annual$0.991 Year
One-time1
  • Advanced Access Lifetime$2.99
None

Hxmy Task

No in-app purchases

Questions

Is OneOpen free?
OneOpen is free to download, with in-app purchases available.
Is Hxmy Task free?
Hxmy Task costs $1.99, with no in-app purchases.
Do OneOpen or Hxmy Task have ads?
Neither OneOpen nor Hxmy Task shows ads.
Which is updated more often, OneOpen or Hxmy Task?
OneOpen ships an update every 4 days, and Hxmy Task weekly. Most recently, OneOpen was updated on November 8, 2026 and Hxmy Task on October 31, 2026.

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