
Robocode
CodeCombat
Screeps
CheckIO
CodinGame
Human Resource Machine
Colobot Gold
Vim Adventures
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 250 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.
Robocode
RepDBRobocode is recommended for beginners who want to learn Java in a fun and interactive way, computer science educators looking for an engaging teaching tool, hobbyists interested in robotics and AI, and competitive individuals who enjoy game-like challenges.
RepDB'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, Robocode seems to be more popular. It has been mentiond 12 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.
This idea seems similar to screeps, robocode, battle-code, and to a lesser extent, Neural MMO. Source: almost 4 years ago
Looks cool! Reminds me of robocode. Source: almost 4 years ago
I found https://robocode.sourceforge.io/ in Java, https://screeps.com/ in JavaScript (WASM from Golang seems not to work), and https://leekwars.com/ had its own languageโฆ. Source: about 4 years ago
You had to write the intelligence of a robot/tank in a C-like language of these game development software. The bottom line is two of these programs competed against each other. If I remember correctly these battles took place in a recurring tournament and you could win a license of the game developement software, or maybe nothing. The only one I found in a 2-minute search that is similar to this is Robocode... Source: over 4 years ago
One of the first incantations of this idea that I encountered, when I had just started working at my first corporate job back in the day, was Robocode ( https://robocode.sourceforge.io/ ) - it was great fun, and I see it's still going. - Source: Hacker News / over 4 years ago
CodeCombat - Learn programming with a multiplayer live coding strategy game.
Screeps - Learn to code JavaScript by playing game.
CheckIO - CheckIO is a web site with a mission: To teach JavaScript and Python coding skills through a game-playing interface. It is designed to teach new skills or improve existing skills through completing challenges.
CodinGame - CodinGame provides users with a fun and effective way to learn coding that eschews the rigid structure of traditional teaching methods.
Human Resource Machine - Tomorrow Corporation is an independent game developer behind indie games Little Inferno and Human Resource Machine
Colobot Gold - Colobot Gold is modified version of the original https://alternativeto.