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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.
Busuu 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, Busuu seems to be more popular. It has been mentiond 14 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.
Give https://busuu.com/ a go, I think it does a much better way of explaining words and grammar than Duolingo. Good luck! Source: over 3 years ago
When I was starting out I used a subscription to Busuu and thought it was pretty good. They had listening exercises, vocab exercises, grammar/conjugation, and test exams. There's also a community feature where native speakers can correct some of the exercises you do (and vice versa). Source: almost 4 years ago
I have been studying French for a few years (I still don't feel I would be very beneficial to you unfortunately, however) and a good place to look for language partners that I have found is busuu.com . A big section of it is connection to others learning your native language that speak your learning language. Just fyi if you want that info. (: Good luck!! Source: almost 4 years ago
Then I've tried Busuu premium, which is considerably better than Duolingo - at the very least tries to teach you grammar, and the video contents are really well produced. For an absolute beginner it is great! Source: about 4 years ago
I learn english at busuu.com. One of my lessons contain phrase "i had dinner" and also "i had pizza". I am confused. Dinner and pizza it is countable nouns. Should I use "a" article? Source: about 4 years ago
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
Memrise - Learn a new language with games, humorous chatbots and over 30,000 native speaker videos.
Babbel - Babbel is a paid language learning service that aims to strike a balance between thoroughness and cost efficiency.
Rosetta Stone - Rosetta Stone is the world's most popular software for learning languages. It is offered at a cost of just $169 when purchased outright, but it is also possible to purchase language programs in a subscription format that offers ongoing support.
Lingvist - Lingvist helps you take your foreign language skills to the next level with a broad selection of exercises and lessons.
Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.