
LearnerGPT
PrepAI
mettl
Questgen
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.
LearnerGPT
RepDBLearnerGPT's answer
Claude Anthropic, FrontEnd tech, BackEnd tech
LearnerGPT's answer
-Educators -Higher education professors -Unviersities -students
LearnerGPT's answer
Built for institutional trust, Professor first approach. -Institution Scoped: Your syllabus, papers and data are scoped to your institution only. No cross-institution data sharing. -Professor controlled: Every generated question must be approved by the professor. Zero autonomous release of content to students. -Not Used for Training: Your uploaded syllabi and generated papers are never used to train AI models. Your IP stays yours.
RepDB'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.
LearnerGPT's answer
We do not store your data or use your data to train AI model. No prompt engineering is required and price wise its very cheap as compared to others.
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.
LearnerGPT's answer
Our audience is professor. Today, technology has transformed classrooms. But one thing hasn't changed. Great learning still begins with a great teacher. Yet today's educators spend countless hours creating assessments, formatting documents, and completing repetitive academic work. Those are hours taken away from students. LearnerGPT exists to return those hours. Not by replacing educators. By empowering them. Quietly supporting them โ freeing teachers to inspire, helping students grow, and enabling institutions to deliver better outcomes.
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.
LearnerGPT's answer
Like many of us in the technology industry, I use AI every day. But it made me wonder: how is AI actually being taught and used in colleges today? Are professors using AI in their teaching? If so, how are they using it? And while Tier 1 institutions are rapidly building AI Centers of Excellence, what does the reality look like in Tier 2 and Tier 3 colleges?
These questions led me on a journey to understand the current state of AI adoption in higher education. I wanted to explore how students in smaller citiesโmany of whom may not even have access to paid AI toolsโare learning in a world where AI will define their future. What I discovered revealed a significant gap.
Many educators are still spending a large part of their time on repetitive administrative tasks instead of teaching, mentoring, and driving AI adoption within their institutions. At the same time, students are relying on free AI tools to complete assignments and answer questions, often receiving inaccurate or hallucinated responses without knowing how to validate them.
That research made one thing clear: the challenge isn't simply giving students access to AI. It's about creating an ecosystem where educators are empowered to teach better, students learn responsibly, and institutions can prepare graduates for an AI-first future.
That realization became the foundation of my visionโto build an AI ecosystem that supports every stakeholder in higher education: empowering professors by automating administrative work, enabling students with reliable, curriculum-aware AI learning, and helping institutions strengthen placements by preparing industry-ready talent.
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.
PrepAI - PrepAI offers a smart & easy test creation process backed by advanced AI algorithms. It helps you create quality exams, quizzes, and tests using an easy-to-use dashboard.
mettl - Mettl is a #SaaS based Online #Assessment Platform which helps you measure a candidate's #Aptitude, #Technical skills & conduct
Questgen - Generate quizzes from text, PDFs, videos & more โ instantly with AI