Cusdis
DISQUS
utterances
giscus
ReplyBox
Hyvor Talk
HTML Comment Box
CommentBox.io
RepDB
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.
RepDBRepDB'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.
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.
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.
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.
Based on our record, Cusdis seems to be more popular. It has been mentiond 4 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.
Or https://cusdis.com/ if you want an open source alternative... Source: almost 5 years ago
Flask-Comment is a lightweight and easy for use Flask extension for creating comment component in Flask/Jinja2 template, supporting Disqus, Cusdis, Valine, Utterances, and Gitalk. Source: about 5 years ago
Both Cusdis and Disqus are not performance-friendly as they highly affect Cumulative Layout Shift (CLS). - Source: dev.to / about 5 years ago
Cusdis spent me one week to release the first version. Now there are around 50 active websites using Cusdis as their comment system. More than 10 people sponsor this project. All of these tools combine together makes me build a full-stack SaaS project so fast:. - Source: dev.to / over 5 years ago
DISQUS - Disqus is a global comment system that improves discussion on websites and connects conversations across the web.
utterances - A lightweight comments widget built on GitHub issues.
giscus - A comments system powered by GitHub Discussions. Let visitors leave comments and reactions on your website via GitHub!
ReplyBox - ReplyBox, a simple, honest comment system. No ads, no dodgy affiliate links, no fluff.
Hyvor Talk - The Best Commenting Platform For Your Website
HTML Comment Box - HTML Comment Box widget for your website. Copy the HTML code and it just works!