Comparison

Zenkit To Do vs Stackby

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

Head to head
About

Zenkit To Do

This app helps you manage tasks and organize lists for personal or collaborative use. It allows you to add various file types to tasks, set reminders, and sync across devices for offline access. Collaborate with others by sharing lists and assigning tasks.

Highlights
  • Create and organize any type of list
  • Attach files and documents to tasks
  • Set reminders for important dates
  • Share lists and folders with others
  • Assign tasks and comment on them
  • Offline access and cross-device synchronization
  • Two-factor authentication for security
Features
Read full description

Zenkit To Do is a super-simple task management app to help you work productively and collaborate with anyone. It lets you organize your tasks, shopping lists, meetings, events, trips, ideas, notes, places, and whatever else is important to you. You can create lists and share tasks with your team members, family, and friends. To Do synchronizes everything between all your devices so you can access your lists wherever you are, even offline. ---------- Zenkit To Do is part of the Zenkit product family. Zenkit has won several awards and is celebrated in Lifehacker, TechCrunch, CNET, and The Next Web, to name but a few. ---------- Organize • Create any lists you need and use them on your phone, tablet, and computer simultaneously. • Add images, PDFs, presentations, photos, links, and other documents to your tasks. • Set reminders so you never miss an important date. • Use folders to help you organize your lists. Collaboration • Share lists with team members, friends, and family. • Or share whole folders to make sure everyone has the lists they need. • Comment on tasks to keep your chats in context. • @mention other users to contact them directly. • Assign tasks so everyone knows what they need to do. • See everything you need to work on in the “Assigned to Me” list. Use Anywhere, Safely • All content is automatically synchronized across all of your devices. • All content is available offline, so you can continue working without the internet. • Your content belongs to YOU. • Data privacy and protection is central to us. • 2FA login protects your account. • Our servers are located in Germany. The Zenkit Universe • To Do works seamlessly with the original Zenkit app and other Zenkit products. This means you can also access your tasks on a Kanban board, Gantt chart, or with a mind map. Stay tuned! • Additional custom fields and references to other objects such as customers etc. are possible through the Zenkit app. Our privacy policy: https://zenkit.com/privacy/ Our terms of use: https://zenkit.com/terms/ For more information, go to https://zenkit.com/todo/

About

Stackby

This app provides a flexible database platform to organize any type of information, from customer leads to project tasks and marketing campaigns. It allows real-time creation, management, and collaboration on databases from any mobile device, offering over 300 pre-built templates for quick setup.

Highlights
  • Organize information
  • Manage tasks and projects
  • Manage marketing campaigns
  • Real-time collaboration
  • 300+ pre-built templates
  • Cross-platform accessibility
Features
Read full description

Stackby is a flexible, easy to use database platform for you to organize anything. From agencies to freelancers to content creators to SMBs, over 3500 teams use Stackby to plan, manage and automate their work, their way. With Stackby on iOS, you can now get the power of Stackby right on your fingertips. All your databases in the web, are now automatically accessible on mobile. Now you can create, manage and collaborate with your teams, from anywhere you are - all in real-time. Some of the use-cases of Stackby today - --> Organizing information - - Leads & Customers - Sales CRM - Personal CRM - Recruitment CRM - Business Development - Applicant Tracking - Volunteer Management - Product - Bugs, Issues, Launches & Roadmap - Media lists --> Manage tasks and projects - - Task Planning - Client based Project Planning - Goal Tracking - OKR Tracker - Project Portfolio Management - Project Resource Management - Simple Project Tracker --> Manage your Marketing campaigns - Campaign Management - Social Media Calendar - Content Planning - Content Calendar - Video Production Management - Blog Editorial - PR Management - SEO Tracking - On-page, Off-page, SEO Audit - Ad Campaign Management - Reporting Analytics - Google Analytics, Search Console Choose from one of the 300+ pre-built templates across categories, and get started in less than 2 minutes. Download it on your mobile and tablets and seamlessly work across different platforms - web, desktop, mobile and tablet or iPad. Make way for endless possibilities.

Screenshots

Zenkit To Do4 screens
Stackby4 screens

Verdict

The call

The clearest difference is in-app purchases: Stackby at none against Zenkit To Do's 2. Stackby also leads on rating (4.3 vs 4.1) and review sentiment (74% vs 65%). Zenkit To Do's advantage is ratings volume (131 vs 42). On price, 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

Both are free to download. Zenkit To Do sells 2 in-app purchases, starting at $3.99 per month. Stackby asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stackby holds the better App Store score, 4.3 against 4.1. Both are backed by a comparable volume of ratings — 131 and 42 respectively. Written reviews point the same way: 65% of Zenkit To Do's written reviews are positive against 74% of Stackby's.

UpkeepUpdate frequency

Zenkit To Do ships an update every 2 months, Stackby every 6 weeks. Both last shipped on September 21, 2026.

Scorecard5 real differences · 5 level
Zenkit To Do versus Stackby: the parameters behind the verdict, then further details
ParameterZenkit To DoStackby
PriceFreeFree
Rating4.1 (131 ratings)4.3 (42 ratings) — better
Positive reviews65.2% of reviews73.7% of reviews — better
Number of ratings131 — better42
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better12.0
Further details — not scored
Size46 MB39 MB
Age rating4+4+
DeveloperaxonicRelytree Technologies Pvt. Ltd

Customer experience

Zenkit To Do

All ratings131 ratings
Positive76.3%
Neutral3.8%
Negative19.8%
Written reviews141 reviews
Positive65.2%
Neutral7.1%
Negative27.7%

Stackby

All ratings42 ratings
Positive88.1%
Neutral0.0%
Negative11.9%
Written reviews19 reviews
Positive73.7%
Neutral5.3%
Negative21.1%

In-app purchases

2 purchases

Zenkit To Do

Subscriptions2
  • Zenkit To Do Plus$3.991 Month
  • Zenkit To Do Plus$35.991 Year
None

Stackby

No in-app purchases

Questions

Is Zenkit To Do free?
Zenkit To Do is free to download, with in-app purchases available.
Is Stackby free?
Stackby is free to download, with no in-app purchases.
Which has better reviews, Zenkit To Do or Stackby?
Stackby is rated higher. Zenkit To Do averages 4.1 out of 5 from 131 ratings, while Stackby averages 4.3 from 42 ratings.
Do Zenkit To Do or Stackby have ads?
Neither Zenkit To Do nor Stackby shows ads.
Which is updated more often, Zenkit To Do or Stackby?
Zenkit To Do ships an update every 2 months, and Stackby every 6 weeks. Most recently, Zenkit To Do was updated on September 21, 2026 and Stackby on September 21, 2026.

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