Software Alternatives, Accelerators & Startups

utterances VS RepDB

Compare utterances VS RepDB and see what are their differences

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utterances logo utterances

A lightweight comments widget built on GitHub issues.

RepDB logo RepDB

Exercise dataset for fitness apps: transparent background, animations, no subscription
Visit Website
  • utterances Landing page
    Landing page //
    2022-03-30
  • RepDB Standard exercise dataset
    Standard exercise dataset //
    2026-08-15
  • RepDB Starter tier
    Starter tier //
    2026-08-15

RepDB is a one-time-purchase exercise dataset with animations for developers building fitness and workout apps — not a subscription, not a rate-limited API. You download the data once and own it: JSON (and SQLite on the higher tier), WebP images, and full EN/DE/ES translations, with no per-request billing and no dependency on our servers staying up.

A free tier includes 600+ exercises with flat-style 512×512 images, attribution-licensed for commercial in-app use. The Starter tier ($199) adds the full catalog in classic white-background style. Standard ($399) adds transparent 1024px images, looping animations, exercise relations (similar/progressions/regressions), workout templates, and embeddings — exclusive to that tier.

Every exercise includes muscle-group highlighting, equipment/muscle icons, MET values, and safety/goal tags. Compared to GIF- or JPG-based competitor APIs, RepDB images are transparent WebP with no watermarks, so they drop into any app UI without a white box around them.

utterances

Pricing URL
-
$ Details
Platforms
-
Release Date
-

RepDB

Website
repdb.co
$ Details
freemium $299 / One-off
Platforms
Web Mobile
Release Date
2026 July

utterances features and specs

  • GitHub Authentication
    Utterances uses GitHub issues for comments, meaning users authenticate via GitHub. This can reduce spam and ensures that commenters have a verified identity.
  • Lightweight and Fast
    Utterances is designed to be lightweight and load quickly, benefiting site performance and user experience.
  • Markdown Support
    Since it leverages GitHub issues, users can write comments in Markdown, which many developers and technical users appreciate.
  • GitHub Integration
    Comments are managed through GitHub issues, making them easy to track, moderate, and integrate into your development workflow.
  • Open Source
    Utterances is open source, allowing developers to review the code, contribute, and customize it to their needs.

Possible disadvantages of utterances

  • Dependency on GitHub
    Comments are entirely reliant on GitHub's infrastructure, which means any downtime or issues with GitHub services can affect the commenting system.
  • Limited to GitHub Users
    Only users with GitHub accounts can comment, which may exclude or discourage participation from users who are not developers or familiar with GitHub.
  • No Anonymity
    Because commenting requires a GitHub account, users cannot comment anonymously, which might be a drawback for some communities.
  • Moderation Complexity
    Moderating comments requires managing GitHub issues, which can be cumbersome compared to dedicated comment moderation tools.
  • Feature Limitations
    Utterances is relatively simple and lacks advanced features found in other commenting systems, like rich media support, voting, or detailed analytics.

RepDB features and specs

  • WebP Format Benefits
    start+peak exercise images
  • JSON
    relations, metadata, equipment
  • Transparency
    transparent background
  • Animations
    Animated loops in paid tier

Analysis of utterances

Overall verdict

  • Utterances is generally considered a good option for integrating a commenting system.

Why this product is good

  • It is lightweight and doesn't add significant loading time to web pages.
  • Utterances uses GitHub issues to store comments, which integrates well for projects already using GitHub for version control.
  • Installation is straightforward, making it easy to implement on static sites, particularly those generated with Jekyll or Hugo.
  • The comments are stored on GitHub's infrastructure, which is reliable and robust.

Recommended for

  • Developers and bloggers already using GitHub for project hosting.
  • Technical blogs and sites generated with static site generators like Jekyll or Hugo.
  • Users who prefer a minimalistic and efficient commenting system over more feature-rich alternatives.
  • Those looking for an open-source, privacy-friendly commenting solution.

utterances videos

SEMANTICS-7: Utterances, Sentences & Propositions

RepDB videos

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Category Popularity

0-100% (relative to utterances and RepDB)
Social Networks
100 100%
0% 0
Datasets
0 0%
100% 100
Project Management
100 100%
0% 0
Developer Tools
0 0%
100% 100

Questions & Answers

As answered by people managing utterances and RepDB.

What makes your product unique?

RepDB's answer:

RepDB is sold as a one-time download, not a metered API — you own the JSON/SQLite data and WebP images outright, with no rate limits, no per-request billing, and no risk of the vendor cutting off access. It's also the only dataset in this space with EN/DE/ES translations, transparent (alpha-channel) images with no watermark, muscle-group highlighting, safety/goal tags, and looping animations on the higher tier.

What's the story behind your product?

RepDB's answer:

RepDB grew out of a consumer workout app its creator was building solo. Sourcing exercise images and data meant either paying for a subscription API with usage caps and no caching rights, or producing everything from scratch. The illustrated, multi-language dataset was built for us first, then split out as its own product once it became clear other indie developers had the same problem and preferred to buy the data outright rather than rent it through an API.

Why should a person choose your product over its competitors?

RepDB's answer:

Most alternatives are subscription APIs — you pay monthly, you're capped on requests, and ExerciseDB's terms of use explicitly forbid caching or storing the data at all, so every image render is a live paid API call. RepDB is the opposite: pay once, download the files, self-host with zero ongoing dependency. It's also the only option offering true DE/ES localization and transparent images instead of a white box behind every exercise.

How would you describe the primary audience of your product?

RepDB's answer:

Solo developers and small teams building fitness or workout-tracking apps (iOS, Android, web) who need licensed exercise images and structured exercise data, but don't want to build their own media pipeline or depend on a rate-limited third-party API.

User comments

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Social recommendations and mentions

Based on our record, utterances seems to be more popular. It has been mentiond 53 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

utterances mentions (53)

  • Adding Giscus Comments to Next.js Blog Pages
    Utterances: **The primary inspiration for giscus. It uses **GitHub Issues instead of Discussions to store comments. It is extremely lightweight but does not support threaded replies as natively as giscus. - Source: dev.to / 6 months ago
  • [TIL][Jekyll] Replacing Disqus with utterances for GitHub issue comments
    Title: [TIL][Jekyll] Removing Disqus and switching to utteranc to use github issue as article comments Published: false Date: 2021-05-14 00:00:00 UTC Tags: Canonical_url: http://www.evanlin.com/jekyll-remove-disqus/ --- ![](http://www.evanlin.com/images/2021/github_comment.jpg) ## Preface: ![](https://jekyllrb.com/img/jekyll-og.png) The escalation of the pandemic disrupted the original travel plans, but... - Source: dev.to / over 5 years ago
  • Add Utterances Comment System in Next.js App in App Router
    'use client'; Import { useEffect, useRef } from 'react'; Const Comments = ({ issueTerm }) => { const commentsSection = useRef(null); useEffect(() => { const script = document.createElement('script'); script.src = 'https://utteranc.es/client.js'; script.async = true; script.crossOrigin = 'anonymous'; script.setAttribute('repo', 'shade-cool/article'); script.setAttribute('issue-term',... - Source: dev.to / about 2 years ago
  • Converting BlogCFC blog to Eleventy
    Handling New Comments: There are excellent lightweight comment utilities available for managing comments on your eleventy blog. I personally use Utterances, but Giscus is also a great alternative. - Source: dev.to / over 2 years ago
  • Unleash Your Dev Blog: Write More with GitHub Issues as Your CMS
    We can use utteranc.es, a lightweight comment widget built on GitHub Issues to integrate authed comments in our blog. - Source: dev.to / over 2 years ago
View more

RepDB mentions (0)

We have not tracked any mentions of RepDB yet. Tracking of RepDB recommendations started around Jul 2026.

What are some alternatives?

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