Twine
Quizzes for Pages
Outgrow
Poll Everywhere
1World Online
Godot Engine
Qzzr
RenPy
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.
Twine 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, Twine seems to be more popular. It has been mentiond 285 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.
Just in case anyone's interested, https://twinery.org is a pretty great editor and associated tooling for making your own CYOA games. - Source: Hacker News / 11 months ago
How sophisticated your language is depends only on your whim, honestly. Even most automatization solutions like Make or n8n make do with just simple connections between node bubbles, with edges only signifying the execution flow. They balance it out with complex node editors, and values from other blocks are used in templates like how you would write a Nunjucks-templated HTML page. A more gamedev-related example... - Source: dev.to / about 1 year ago
There is also twinery or inklewriter for simple text stories with an online authoring option. And Inform7 for full on text adventures, where you write the stories in a declarative manner as plain english. https://twinery.org https://inklewriter.com https://ganelson.github.io/inform-website/. - Source: Hacker News / about 1 year ago
Some sort of escape room backbone software that links together all of the hardware according to a script is such a neat idea. It would be so cool to have something like Twine [0] to build out the story graphically, where input/output is via cues to staff/hardware rather than just text on screen. An old boss of mine used to run home-haunts for halloween. (a walk-through haunted house experience scaffolded-up in his... - Source: Hacker News / over 1 year ago
> I hoped for an entre genre to form around literary hypertext with diegetic narrative Twine and other interactive fiction engines provide this to some degree, though I think Cyanโs visual aesthetic is also intrinsic to the feel of the games. https://twinery.org. - Source: Hacker News / over 1 year ago
Quizzes for Pages - Quizzes for Pages is an application to create and share quizzes on your Facebook Page.
Outgrow - Enabling marketers boost conversion with interactive, beautiful & viral quizzes/calculators.
Poll Everywhere - Audience response system that uses mobile phones, twitter, and the web. Responses are displayed in real-time on gorgeous charts in PowerPoint, Keynote, or web browser.
1World Online - 1World's Platform consists of applications like polls, quizzes, surveys, and debates to boost engagement and revenue opportunities.
Godot Engine - Feature-packed 2D and 3D open source game engine.
Qzzr - The quiz maker that makes sense. Create quizzes, polls, surveys, leaderboards, and mini-games.
