
Conceptboard
Cr4yon
Whiteboard Team
Scribblar
Scribble Online Whiteboard
Ryeboard
Stormboard
iDroo is a browser-based collaborative whiteboard with drawing, equations and document annotation.

E.ggtimer.com
UbiTimer is a PowerPoint timer add-in that helps presenters stay on track with a clear countdown across slides. Simple and effective.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | app.idroo.com | ubitimer.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from Estonia · 1 - 9 employees · 2009 | Startup from the United Kingdom · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


iDroo is an online collaborative whiteboard for teaching and working together. It supports drawing, mathematical notation and document annotation. The current product runs in a browser without the legacy Skype/Windows installer. Built-in voice/video calls and screen sharing are available, with...
UbiTimer is a lightweight PowerPoint add-in that adds countdown, count-up, and radial timers directly to your slides. Perfect for teachers, presenters, and trainers, it helps keep lessons and meetings on schedule. Works on Windows and Mac, supports slideshow mode, and offers a free EDU version...
What each product offers, as listed by its team.


An editorial look at what each product does well and who it suits.


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Overall verdict
Why this product is good
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing IDroo and Ubi Timer.
IDroo's answer
iDroo combines a collaborative whiteboard with tools for teaching before, during and after a lesson. Teachers can work through equations, diagrams and annotated worksheets with students, then connect that work to courses, assignments and feedback. Live Group Lessons add private student workspaces alongside a shared teacher board, so teachers can follow individual progress while teaching the group.
Ubi Timer's answer:
Ubi Timer brings timing directly into PowerPoint, so presenters do not need to switch to a browser, phone, or separate desktop timer. It supports countdown and stopwatch modes, works during Slide Show, and can be used per slide or across sections of a presentation, which makes it especially useful for lessons, workshops, rehearsals, and live talks.
IDroo's answer
iDroo is a good fit when your lessons involve solving problems together, writing mathematical notation or working through documents. Teachers and students can contribute to the same board, discuss their work through built-in calls, and revisit saved explanations afterward. Courses and assignments support ongoing teaching. A free plan provides a starting point, with paid plans adding features and capacity.
Ubi Timer's answer:
Choose Ubi Timer if you want a timer that feels native to PowerPoint instead of bolted on. It is designed to be quick to set up, easy to style to match your slides, usable on Windows, Mac, and PowerPoint for the web, and reliable in live presentation settings without needing to leave your deck. It also offers a free version and a free EDU option for verified schools.
IDroo's answer
iDroo’s primary audience is private tutors, teachers and tutoring teams running online lessons. Its equation editor, drawing tools and document annotation are particularly useful for mathematics and science, while shared boards also support language teaching and other subjects. Students and families can use its study tools for practice and homework support between lessons.
Ubi Timer's answer:
Ubi Timer is built for teachers, trainers, presenters, and speakers who use PowerPoint and need better control over timing. It is especially well suited for classrooms, workshops, meetings, practice sessions, and any presentation where staying on schedule matters.
IDroo's answer
iDroo has its roots in a collaborative whiteboard used alongside Skype. It has since grown into a browser-based teaching platform with its own voice and video calls, screen sharing, courses, assignments and live group lessons. The shared whiteboard remains at its centre: a place where teachers and students can explain ideas visually and work through problems together.
Ubi Timer's answer:
Ubi Timer was created out of frustration with standalone timers and makeshift PowerPoint timer setups built from animated slides. The goal was to create a cleaner, easier, and more reliable way to manage time inside PowerPoint without disrupting the presentation experience.
Ubi Timer's answer:
Ubi Timer is built as a Microsoft PowerPoint add-in for Microsoft 365 and Office, designed to work directly inside PowerPoint across supported Windows, Mac, and web environments. I could not find a trustworthy public source naming the full internal stack, so this answer is safest for a public listing.
Ubi Timer's answer:
Teachers and schools Corporate trainers Workshop facilitators Public speakers and presenters Teams using PowerPoint for meetings and rehearsals
Share your experience with using IDroo and Ubi Timer. For example, how are they different and which one is better?
When comparing IDroo and Ubi Timer, you can also consider the following products.


A simple countdown timer with an alarm for the browser.
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Scribblar is a free online collaboration tool that is perfect for online tutoring.
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Scribble Online Whiteboard is an advanced collaborative whiteboard solution that allows you to draw the sketch using the web-based or mobile platforms such as iPad/iPhone and Android.
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