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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.
Tello
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, Tello seems to be more popular. It has been mentiond 49 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.
Not OP, and they said what they use (Red Pocket) but I also pay $5/mo for service from Tello ( https://tello.com/ ). 500MB/mo, data only, calls through Google Voice via data. (100 minutes of voice $1/mo extra.) Lots of choice in building your own plan. - Source: Hacker News / almost 3 years ago
Happy with Tello: https://tello.com/. - Source: Hacker News / almost 3 years ago
Https://tello.com/ Unlimited on tello is 25gb of data. Source: about 3 years ago
I'm on Mint and happy with it, live in Arlington VA and work in Downtown DC. As of last year you could sign up for Visible for a month and cancel. If you don't need fully unlimited data, i.e. Where you are staying will provide internet, a provider like tello.com might be good where you can customize your minutes and data (US Mobile has similar). Source: over 3 years ago
For US calling, if you have a supported phone, you can also sign up for a cheap US provider like Tello and pay $8/month for unlimited US calls and texts on a secondary SIM. Turn on wi-fi calling on the US SIM and make calls using your Canadian data. When you go to the US, add a gig of data for the cost of 2 Rogers US minutes. That's one of many similar US providers discussed in depth here. Source: over 3 years ago
US Mobile - US Mobile is a platform that offers a wireless network to users for tablets and phones.
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Ultra Mobile - Ultra Mobile is a platform that offers users unlimited text, talk, and data services to users through its 4G LTE network.
Credo Mobile - Credo Mobile is a platform that offers wireless and carrier services to users with its 4G LTE network.
H2o Wireless - H2o Wireless is a mobile virtual network operator that offers users wireless and carrier services.
Google Fi - Wireless phone plan designed w/ the latest Google tech