
Userlytics
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RepDB
Userlytics is a full featured state of the art user experience research platform with a global participant group of almost 2 million panelists. Since 2009, Userlytics has been helping enterprises and agencies improve the user and customer experience of their websites, apps and prototypes. With a scalable pricing model and a diverse worldwide panel, Userlytics allows brands to run both moderated and unmoderated usability studies with as many or as few participants as they choose. In addition to its testing services, Userlytics offers a variety of optional professional services including senior UX Consultants in both Europe (Madrid) and the U.S. (San Diego & Miami). The team can help clients achieve actionable UX insights, including through the use of our proprietary ULX Score, a benchmarking platform for measuring a 360ยบ view of Appeal, Adequacy, Distinction, Usability, Trust, Performance, Affinity and Appearance.
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.
Userlytics
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, Userlytics 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.
On platforms like usertesting.com, userlytics.com, etc you can specify which country the participants should reside in/be from. Source: about 3 years ago
But, if your ultimate question is, "how can I concept-test the greatest number of ideas at one time?", I think you're going to have to choose between some kind of forced-order ranking or card-sorting exercise. OptimalWorkshop and UserLytics both have these capabilities in them, as do many other online surveying tools. Source: almost 4 years ago
I've been looking at the variety of UT sites available for remote usability testing (useberry.com, maze.co, userzoom.com, UserTesting, userbrain.com, TryMyUI, userlytics.com, uxarmy, UXcam). Source: over 4 years ago
Userlytics: Depends but definitely possible to get around ยฃ50 per month. Source: almost 5 years ago
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