
Gumroad
WooCommerce
Thirty Bees
PrestaShop
Sellfy
Sellix
OpenCart
Sell.app is the easiest way to sell digital products online. Spin up your own storefront in just a few minutes and start selling instantly.

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?
Based on our record, Sell.app seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | sell.app | ubitimer.com |
| Pricing | ||
| Company | — | Startup from the United Kingdom · 1 - 9 employees · 2025 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Sell.app yet.
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.


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


No analysis of Sell.app yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
No Sell.app videos yet. You could help us improve this page by suggesting one.
UbiTimer Global Timer Across Slides in PowerPoint
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Sell.app and Ubi Timer.
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.
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.
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.
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 Sell.app and Ubi Timer. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


The shop is powered by sell.app so the website itself does not seem malicious. - Source: dev.to / over 2 years ago
SellApp is a simple way to sell digital products online. A digital goods seller can spin up a storefront in less than a minute and start selling instantly, while we automatically take care of all the difficult parts — delivery, checkout,... Source: almost 5 years ago
We launched SellApp a couple months ago and got a ton of feedback from hundreds of sellers. We're now at the stage where they're pretty satisfied, so we thought we'd put the product out there and see what else we could improve. Source: almost 5 years ago
Tracking Ubi Timer since Oct 2025.
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Create your online store with PrestaShop's free shopping cart software. Build an ecommerce website for free and start selling online with hundreds of powerful features.
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Sellfy is an easy to use but powerful e-commerce platform where you can sell digital, print on demand or subscription products. Use a Sellfy storefront to create a beautiful online store or embed a Sellfy shopping cart to your own website.
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