Comparison

Collabora Office vs ZenDoTasks

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

Head to head
About

Collabora Office

Create and edit documents, spreadsheets, and presentations on your mobile device. This app offers compatibility with a wide range of file formats, including Open Document and Microsoft Office. It's an open-source solution for on-the-go productivity.

Highlights
  • Text editor
  • Spreadsheet program
  • Presentation program
  • Open Document Format support
  • Microsoft Office file compatibility
  • Open Source
Features
Read full description

Collabora Office is a text editor, spreadsheet and presentation program based on LibreOffice, the world's most popular Open Source office suite — and now it's on iOS, enhancing your possibilities to work on mobile devices. This app is in active development, feedback and bug reports are very welcome. Supported files: • Open Document Format (.odt, .odp, .ods, .ots, .ott, .otp) • Microsoft Office 2007/2010/2013/2016/2019 (.docx, .pptx, .xlsx, .dotx, .xltx, .ppsx) • Microsoft Office 97/2000/XP/2003 (.doc, .ppt, .xls, .dot, .xlt, .pps) Report issues: Use the bugtracker and attach any files that caused problems via https://col.la/iosBug . Please note that anything you enter in the bugtracker will be public. About the app: Collabora Office for iOS is based on the LibreOffice code for macOS and other platforms. This, combined with a new front-end based on Collabora Online. Credits: iOS port is mainly based on the work of Collabora engineer Tor Lillqvist, with help of Patrick Luby. Please find a detailed list of contributors in the credits: https://col.la/iosCredits License: Open Source — Mozilla Public License v2 and other

About

ZenDoTasks

Features
Read full description

Productivity isn’t just about getting things done—it’s about having the energy to do them. Meet ZenDo, the minimal task manager designed for the human side of productivity. Built by an iOS developer who understands that some days you’re ready to conquer the world, and other days you just need to recharge, ZenDo helps you balance your output with your internal battery. WHY ZENDO? Most to-do lists just grow longer until you’re overwhelmed. ZenDo changes the game by putting your energy level front and center. KEY FEATURES: Energy-Based Productivity: Use the interactive slider to set your daily energy level. ZenDo reminds you to take it easy when you're low and encourages you when you're high. Simple Task Management: A clean, intuitive interface to manage Today’s tasks, Upcoming goals, and Completed wins. The Energy Refiller: Hit a wall? Use the "Refiller" to get curated ideas to recharge—from "Cat Chaos" videos to deep-sea zen—designed to reset your brain. Privacy-First: Built with SwiftData. Your tasks are yours. No cloud, no tracking, and no accounts required. Everything stays on your device. Native & Fast: Experience the fluid performance of a native SwiftUI app built for the modern iOS experience. Whether you’re a developer refactoring code, or a busy student, ZenDo helps you get "Zendone" without the burnout. Stop counting tasks. Start managing energy.

Screenshots

Collabora Office4 screens
ZenDoTasks4 screens

Verdict

The call

The clearest difference is iOS requirement: Collabora Office at 16.5 against ZenDoTasks's 26.2. On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

Scorecard1 real difference · 9 level
Collabora Office versus ZenDoTasks: the parameters behind the verdict, then further details
ParameterCollabora OfficeZenDoTasks
PriceFreeFree
Rating3.3 (122 ratings) — better—
Positive reviews40.5% of reviews—
Number of ratings122 — better—
Update frequencyEvery 6 weeks—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.5 — better26.2
Further details — not scored
Size302 MB1 MB
Age rating4+4+
DeveloperCollabora ProductivityLujain Alaydie

Bugs and requests

Collabora Office

Reported bugs

4 issues
  • Unable to open password-protected documents
  • Formatting issues with imported documents
  • Inconsistent behavior when switching between apps
  • Keyboard and cursor controls not working as expected

Requested features

5 requests
  • Dark mode option
  • Improved cursor and text selection controls
  • Better integration with cloud storage services
  • More intuitive file naming and saving process
  • Enhanced spreadsheet functionality

ZenDoTasks

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Collabora Office

No in-app purchases

None

ZenDoTasks

No in-app purchases

Questions

Is Collabora Office free?
Collabora Office is free to download, with no in-app purchases.
Is ZenDoTasks free?
ZenDoTasks is free to download, with no in-app purchases.
Do Collabora Office or ZenDoTasks have ads?
Neither Collabora Office nor ZenDoTasks shows ads.

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