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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.
OpenSky Network 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, OpenSky Network 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.
What about opensky-network.org? Their API is free if you are a feeder. I use Node-RED to get the exact information you mention. Not sure what programming language you are going to use, but if I can get it working in Node-RED as a non-programmer, you should have it up and running in just a few minutes. Source: almost 5 years ago
You may try https://opensky-network.org/, they have a good historical data for aircrafts. Might be something you can find for the airports as well. Source: almost 5 years ago
I haven't thought much about this actually. I wouldn't know how to do something interesting with monitoring/streaming/retraining because as you say, it looks like you would need a proper production setting; that said, there are some interesting open source streaming data sources out there, I recently saw some open live data for flights around the world for example (I think it's this one). Source: about 5 years ago
Flightradar24 filters out a lot of data. ie: military flights. You should look into using opensky-network.org. Source: about 5 years ago
FlightAware - Live Flight Tracking
RadarBox - Real-time flight tracking app with one of the best and most accurate coverage worldwide.
ADSBExchange - The worldโs largest co-op of ADS-B/Mode S/MLAT feeders, and the worldโs largest public source of unfiltered flight data. Access to worldwide flight tracking data for hobbyists, researchers, and journalists alike.
ADSB Hub - The main goal of ADSBHub is to become a ADS-B data sharing centre and valuable data source for all enthusiasts and professionals interested in development of ADS-B related software.
Plane Finder - Plane Finder is built on Automatic Dependent Surveillance โ Broadcast (ADS-B) enabling the transmission of real-time data directly from, and to, aircraft.
VariFlight - VariFlight is a live flight tracking service that allows you to have real-time information about flights worldwide.
