Comparison

OpenDocument Reader vs ChronoZen

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

Head to head
About

OpenDocument Reader

View and edit ODT, ODS, and ODP files on your mobile device. Seamlessly open documents from cloud storage or your device's file explorer, with support for password-protected files and keyword searching. Enjoy offline access and basic editing capabilities.

Highlights
  • View ODT, ODS, ODP files
  • Basic document editing
  • Open from cloud storage
  • Password-protected document support
  • Keyword search and highlighting
  • Offline functionality
  • Print documents
Features
Read full description

Read documents created using LibreOffice or OpenOffice on the go, wherever you keep them, with the Document Reader! The file reader lets you open files like ODF (Open Document Format) documents created using LibreOffice or OpenOffice wherever you are. In the bus on your way to school wanting to look at your notes before the big exam? No problem! With the Document Reader you can open files wherever you like and read & search through your documents to go in a clean and simple way. There is a text editor in here as well, for the last typo before a document goes out. It is a young one and it does not reach every document yet, so the reader is what this app is for. New paragraphs, text formatting and more ways to mark PDFs come with OpenDocument Reader Pro. You can open files from ODF (ODT, ODS & many more) that you have created with Libre Office or OpenOffice also from within other apps. Supported apps include GMail, Google Drive, iCloud, OneDrive, Nextcloud, Box.net, Dropbox and lots of others! Or use our integrated file explorer instead to open files on your device. THE ALL IN ONE DOCUMENT READER *open files with ODF: ODT (writer), ODS (calc), ODP and ODG without a hassle *fix typos, edit spreadsheet cells and highlight text in documents and PDFs *securely open password-protected documents *search for keywords in your ODT (writer), ODS (calc) or ODG and highlight them *print documents if your device is connected to a printer *read your documents in fullscreen to avoid distractions *select and copy text out of your documents *enjoy your documents even without internet connectivity - fully offline capable *read out aloud your documents using Text-To-Speech technology DOCUMENTS TO GO - WHEREVER YOU LIKE In addition to that, the document reader aims to support various other file formats as well as possible: - Portable Document Format (PDF) - Archives: ZIP - Images: JPG, JPEG, GIF, PNG, WEBP, TIFF, BMP, SVG, etc - Videos: MP4, WEBM, etc - Audio: MP3, OGG, etc - Text files: CSV, TXT, HTML, MD, RTF - Microsoft Office (OOXML): Word (DOC, DOCX), Excel (XLS, XLSX), PowerPoint (PPT, PPTX) - Apple iWork: Pages, Numbers, Keynote - Libre Office and Open Office ODF (ODT, ODS, ODP, ODG, FODT, FODS, FODP, FODG) This app is open source. We are not affiliated with OpenOffice, LibreOffice or similar. Made in Austria. Ads are shown in order to support the development of this app. They are free to remove temporarily via the in-app menu. We highly appreciate all kinds of feedback via email. ODF is the format used by office suites like Open Office and Libre Office. Text documents (Writer, ODT), as well as spreadsheets (Calc, ODS) and also presentations (Impress, ODP) are supported, including complex formatting and embedded images. Graphs are no problem either. If you want to secure your data you can even open password-protected documents. Other applications that are using this format are LibreOffice, OpenOffice, NeoOffice, StarOffice, Go-oo, IBM Workplace, IBM Lotus Symphony, ChinaOffice, AndrOpen Office, Co-Create Office, EuroOffice, KaiOffice, Jambo OpenOffice, MagyarOffice, MultiMedia Office, MYOffice, NextOffice, OfficeOne, OfficeTLE, OOo4Kids, OpenOfficePL, OpenOfficeT7, OxOffice, OxygenOffice, Pladao Office, PlusOffice, RedOffice, RomanianOffice, SunShine Office, ThizOffice, UP Office, White Label Office, WPS Office Storm, Libre Office, Collabora Office and 602Office.

About

ChronoZen

Features
Read full description

ChronoZen helps you stay on track when time slips away. Built for focus and time blindness: a clear timer on your Lock Screen and Dynamic Island so you always see how much is left. • FOCUS TIMER — Set 5 to 60 minutes, start, and see progress on the Lock Screen and Dynamic Island. Pause, resume, or end from the widget. • BEAT TIME BLINDNESS — Time stays visible so you can focus without losing track. • PRO (ONE-TIME) — Unlock daily and weekly stats, streaks, category insights, focus reminders, Siri (“What are my ChronoZen focus statistics?”), and custom themes. No subscription. • PRIVACY — All data stays on your device. No account required to use the app. Ideal for ADHD, studying, work blocks, or anyone who wants a simple, visible focus timer.

Screenshots

OpenDocument Reader4 screens
ChronoZen3 screens

Verdict

The call

The clearest difference is in-app purchases: OpenDocument Reader at none against ChronoZen's 1. OpenDocument Reader also leads on iOS requirement (15.0 vs 17.0). ChronoZen's advantage is ads (none vs shown). On price 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

Both are free to download. ChronoZen sells 1 one-off in-app purchase. OpenDocument Reader asks for nothing beyond the download.

Scorecard3 real differences · 7 level
OpenDocument Reader versus ChronoZen: the parameters behind the verdict, then further details
ParameterOpenDocument ReaderChronoZen
PriceFreeFree
Rating4.5 (902 ratings) — better—
Positive reviews30.5% of reviews—
Number of ratings902 — better—
Update frequencyEvery 5 weeks—
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size10 MB5 MB
Age rating4+4+
DeveloperStefl und Taschauer OGTarik Davulcu

Bugs and requests

OpenDocument Reader

Reported bugs

3 issues
  • Corrupted files
  • Formatting issues
  • Crashes and app closing issues

Requested features

3 requests
  • Dark mode option
  • Better spreadsheet editing capabilities
  • Improved file format compatibility

ChronoZen

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

OpenDocument Reader

No in-app purchases

1 purchases

ChronoZen

One-time1
  • Lifetime Pro$4.99

Questions

Is OpenDocument Reader free?
OpenDocument Reader is free to download, with no in-app purchases.
Is ChronoZen free?
ChronoZen is free to download, with in-app purchases available.
Do OpenDocument Reader or ChronoZen have ads?
OpenDocument Reader shows ads; ChronoZen does not.

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