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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 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.
Resend 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, Resend seems to be more popular. It has been mentiond 40 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.
Two practical pieces. First, you need a transactional sender that can do broadcasts. I use Resend because the API is good, the React Email integration is good, and the dashboard is sane. Postmark and AWS SES work fine too. Second, on every publish, send a broadcast to your audience. This is the closest thing you have to a guaranteed reader. - Source: dev.to / about 1 month ago
Resend has quickly become the default way to send email from modern applications. The API is clean, the deliverability is good, and the developer experience is impressive. But Resend only handles sending emails. It provides a html field and you produce the HTML that you've ensured is compatible with Gmail, Outlook, and the many other email clients. - Source: dev.to / about 2 months ago
Netlify/functions/comment-handler.js is triggered by a Netlify outgoing webhook Whenever a new submission hits the blog-comments queue. It sends an HTML email Via Resend (the same delivery layer used for new post notifications) containing the comment text and two HMAC-SHA256-signed action links:. - Source: dev.to / 2 months ago
I run toui.io, a URL shortener I shipped to the public on April 7, 2026. Eleven days before launch I had passwordless email login working on Resend. Five days before launch I tore it out and rebuilt the same flow on AWS โ Lambda + DynamoDB + SES + API Gateway, packaged as a SAM stack. - Source: dev.to / 2 months ago
Whatever you already use for transactional email (Resend, AutoSend, etc.). A CSV or database of customers is enough for the last step. - Source: dev.to / 2 months ago
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