Bitsbox
Kano
HTML Planet for Kids
Code with Anna+Elsa
Tynker
Codรฉdex
Robo Wunderkind
Super Teacher
RepDB
RepDB is a one-time-purchase exercise dataset for developers building fitness and workout apps โ 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 400 exercises with flat-style 512ร512 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 โ 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.
Bitsbox RepDBRepDB's answer:
RepDB is sold as a one-time download, not a metered API โ 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 โ 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, Bitsbox seems to be more popular. It has been mentiond 2 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.
There is also Unity Learn's Create with Code that also has a teacher trainingthat goes with it. BitsBox is also great, my kids started out with it, and then moved onto Create With Code. Source: over 3 years ago
Maybe try Bitsbox? It teaches Javascript by making games. They can share the games with their friends, and it also leaves a lot of room for them to modify the games using what they learned. It teaches a lot of programming skills that are useful later. There is also Google's CS First, that's free and has a lot of different projects. It even has themes like games, sports, arts and stories so it might appeal to more... Source: almost 5 years ago
Kano - The educational computer and coding kit for all ages
HTML Planet for Kids - A fun way to learn HTML & CSS
Code with Anna+Elsa - Hour of Code - draw fractals and snowflakes.
Tynker - Game Worlds for Kids to Learn Programming
Codรฉdex - The most fun way to learn to code.
Robo Wunderkind - Coding and robotics made easy for kids ๐ค
