
Canny.io
Featurebase
productboard
Nolt.io
Upvoty
UserVoice
FeedBear
A better way to collect customer feedback

interviewing.io
LeetCode
HackerRank
Codecademy
Interview Cake
InterviewBuddy
SharpSkill
Two-way AI voice interview practice for developers and devops
Which is more popular?
Based on our record, Frill seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | frill.co | devprep.app |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United Kingdom · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Frill yet.
DevPrep.app is a two-way AI voice interview simulator for developers. Unlike other interview prep tools where you type your answers, DevPrep.app actually talks back the AI asks you a technical question out loud, listens to your spoken answer, gives feedback, and asks follow-up questions just like...
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
Frill.co is particularly recommended for product managers, SaaS companies, and startups looking to prioritize and manage user feedback effectively. It is also beneficial for teams looking to enhance customer interaction and transparency by clearly communicating product development progress and updates.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Frill review | Collect Your Customer Feedback
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Frill and DevPrep.app.
DevPrep.app's answer:
Software developers and DevOps engineers who are preparing for technical interviews.
DevPrep.app's answer:
DevPrep.app offers a genuine two-way voice conversation for interview practice. The AI asks questions out loud, evaluates your spoken response, gives feedback, and asks follow-up questions just like a real technical interviewer would. Most tools make you type. Real interviews make you talk. DevPrep.app also includes 500+ flashcards across 15 topics with progress tracking and review mode, all working in your browser with no app install needed.
DevPrep.app's answer:
Most interview prep tools train you to write answers, not speak them. DevPrep.app trains the skill that actually matters in interviews — communicating clearly under pressure. It works in your browser with no app install, supports both desktop and mobile voice interviews, and includes 500+ flashcards with progress tracking across 15 topics.
DevPrep.app's answer:
Built by a developer who noticed that knowing the answers and being able to say them confidently out loud are completely different skills. Most prep tools only train one of them. DevPrep.app was built to train both.
DevPrep.app's answer:
ASP.NET Core 7, React, TypeScript, Azure OpenAI (GPT-4o), Azure Cognitive Services Speech SDK, Web Speech API, Azure Container Apps, Azure Static Web Apps, Stripe, SQL Server
Share your experience with using Frill and DevPrep.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Frill is a customer feedback management tool you can use as a web app or widget. Use the customization features to build unique boards where you brainstorm ideas and meet customer needs. 🧠
With its simple design and easier supports, Frill (opens in new tab) can be one of the best alternatives for Featurebase. Frill has an updated and modern UI and it is simple to use. Also Frill is a language friendly...
Frill helps companies engage with their customers, gather feedback and prioritize feature requests. It also allows companies to create online communities where users can discuss products and services with each other.
We have no reviews of DevPrep.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


What are your thoughts about setting up a frill? It'll make it super easy to see and have everything - all ideas and features with the proper organization, and users will be able to upvote features, see what's up, etc. Maybe put it on... Source: over 3 years ago
Right now, the only one that comes to mind is https://frill.co/. I reckon it might be free for what you need and how much you'd use it. But I'll keep noodling on other services that might fit the bill. Source: over 3 years ago
Tracking DevPrep.app since Jul 2026.
When comparing Frill and DevPrep.app, you can also consider the following products.

Canny helps you collect and organize feature requests to better understand customer needs and prioritize your roadmap.
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Free, anonymous technical interview practice
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The all-in-one toolkit for managing your customer feedback.
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Practice and level up your development skills and prepare for technical interviews.
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Beautiful and powerful product management.
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HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
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