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Oncallizer VS Clockk

Compare Oncallizer VS Clockk and see what are their differences

Oncallizer

Generate a fair on-call schedule for your residency or training program, fine-tune it by hand, and export it to Excel in minutes.

Rating
0 reviews
Pricing
Free
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Alternatives Is it good?
Clockk

Clockk AI-powered time tracking for freelancers & agencies ⏰🔥💰

Rating
0 reviews
Pricing
Paid Free trial CA$15 / Monthly (5 users)
Promote on VibeVoted
Alternatives Is it good?
Schedule Forge
Forge your schedule, not spreadsheets. Drag-and-drop work orders, capacity-aware line scheduling, shop floor kiosk clocking, AI what-if scenarios, and a daily dashboard that tells you what needs attention. sponsored

Which is more popular?

Based on our record, Clockk seems to be more popular. It has been mentioned 3 times since March 2021.

social mentions
0 vs 3
Calendar And Scheduling popularity
100% vs 0%
alternatives listed
6 vs 240+

Base details

Website, pricing, platforms and company facts side by side.

Oncallizer
Clockk
Website oncallizer.com clockk.com
Pricing
Free Official pricing
Paid Free trial CA$15 / Monthly (5 users) Official pricing
Platforms —
Windows iOS
Company Startup from Saudi Arabia · 1 - 9 employees · 2026 —
Listed in
Schedule Management Scheduling Medical Practice Management Employee Scheduling Appointments and Scheduling Productivity Calendar And Scheduling Appointment Scheduling Web Service Automation +6
Productivity Freelance Time Tracking Agency Freelance Tools SaaS Timesheets Time Management Freelancing +6

About Oncallizer and Clockk

In their own words, as submitted to SaaSHub.

Oncallizer
Clockk

Fair on-call schedules for residency programs and staff teams. Weekend rules, per-person caps, and a fairness score — then fine-tune any shift and export to Excel. Free, no signup for now!

Read more about Oncallizer

Clockk is an AI powered (automatic) time tracking app. Instead of timers, Clockk runs in the background, automatically tracking what you're working on and for how long. Clockk uses AI to automatically assign your work to the right project/client. No start/stop timers to constantly monitor Focus...

Read more about Clockk

Features and specs

What each product offers, as listed by its team.

Oncallizer 5 features
Clockk 5 features
  • Fairness engine
    Hundreds of schedule attempts scored with Jain’s fairness index
  • Custom Rules
    Weekend definitions, heavy-day weighting, per-person caps
  • Role balancing
    Weekend definitions, heavy-day weighting, per-person caps
  • Manual Editing
    Click any shift to reassign or swap it by hand
  • Excel export
    Formatted multi-sheet workbook, ready to share
  • Automatic Time Tracking
    Clockk automatically tracks time spent on different projects and tasks, helping users accurately bill their clients without manual input.
  • Project Visibility
    The software provides detailed insights into how time is allocated across various projects, enabling better project management and resource allocation.
  • Integration with Other Tools
    Clockk integrates with popular tools like Slack, Google Calendar, and Trello, allowing seamless workflow integration and improved productivity.
  • User-Friendly Interface
    The platform is designed with an intuitive interface, making it easy for users to navigate and utilize its features without extensive training.
  • Detailed Reporting
    Clockk offers in-depth reports on time usage, enabling users to gain insights into work patterns and optimize their work habits.

Possible disadvantages

  • Privacy Concerns
    As Clockk tracks user activity, there might be some concerns regarding data privacy and how the information is stored and used.
  • Potential Over-reliance
    Users might become overly dependent on automated tracking, which could lead to less mindful work practices or reduced personal accountability in task management.
  • Limited Offline Functionality
    Clockk's features may be limited when offline, which can be a drawback for users who need to work in areas with unreliable internet access.
  • Costs for Premium Features
    While the basic features might be free, advanced features or integrations could come at a cost, which may be a consideration for budget-conscious users.
  • Learning Curve for Customization
    Some users might encounter a learning curve when setting up the tool to get the most out of its customizable features, which could require time and effort.

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Oncallizer
Clockk
100% 100%
Calendar And Scheduling
0% 0%
0% 0%
Time Tracking
100% 100%
5% 5%
Productivity
95% 95%
100% 100%
Appointments and Scheduling
0% 0%

Questions & Answers

As answered by people managing Oncallizer and Clockk.

Which are the primary technologies used for building your product?

Oncallizer's answer

Next.js, React, and TypeScript, with Supabase for accounts and storage. The schedule generator runs entirely in the browser — no data leaves your device unless you save to an account.

Why should a person choose your product over its competitors?

Oncallizer's answer

Most on-call tools (Amion, QGenda) are enterprise systems with sales calls, contracts, and per-seat pricing. Oncallizer is the opposite: open the site, build a fair schedule in minutes, export it to Excel — And where most tools stop at “filled slots”, Oncallizer shows you a fairness score you can defend when someone asks why they got three weekends.

What makes your product unique?

Oncallizer's answer

Oncallizer doesn’t just fill a calendar — it generates hundreds of candidate schedules and scores each one with Jain’s fairness index, so the schedule you get is measurably the fairest one. Weekend load, heavy days, and per-person caps are all enforced rather than silently broken, and roles (juniors vs seniors) are each balanced against their own fair share. It’s also free to use for now with no signup — the full builder runs in the browser.

What's the story behind your product?

Oncallizer's answer

Oncallizer was born from watching schedulers spend hours in spreadsheets trying to balance weekend calls by hand — and still getting accused of unfairness. The fix: encode the rules people actually argue about (weekends, heavy days, caps, seniority), let an algorithm find the fairest arrangement, and show the fairness score so nobody has to take it on faith.

How would you describe the primary audience of your product?

Oncallizer's answer

Whoever owns the on-call schedule: chief residents and program coordinators at residency and training programs, ward and unit schedulers, and team leads at any organization that shares call duty and argues about weekends.

User comments

Share your experience with using Oncallizer and Clockk. For example, how are they different and which one is better?

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Reviews and articles

External articles and on-site reviews we used to compare the two products.

Oncallizer no reviews yet
Clockk no reviews yet

We have no reviews of Oncallizer yet. Be the first one to post

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    clockk.com · Mar 2023

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Oncallizer 0 mentions
Clockk 3 mentions

Tracking Oncallizer since Jul 2026.

  • Automatic time tracking to help with productivity
    I want to introduce you to Clockk! Automatic time tracking app that runs in the background and tracks what you're working on. Be more productive by being aware of where you're spending your time. Source: about 4 years ago
  • Automatic time tracking to help to grow your business
    Check out https://clockk.com/ for an easy and accurate way to track your time. Gain insight on how you are using your time to help make business decisions and easily keep track of billable hours for multiple clients! Source: about 4 years ago
  • Automatic time tracking tools
    Hey you might be interested in https://clockk.com/ ! Automatic time tracking that separates your work based on project/client :). Source: over 4 years ago

Alternatives to Oncallizer and Clockk

When comparing Oncallizer and Clockk, you can also consider the following products.

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