Software Alternatives, Accelerators & Startups

RepDB VS Extensionsly

Compare RepDB VS Extensionsly and see what are their differences

RepDB logo RepDB

Exercise dataset for fitness apps: transparent background, animations, no subscription
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Extensionsly logo Extensionsly

Privacy-focused Chrome and Edge extensions for productivity, development, research, and security.
  • RepDB
    Image date //
    2026-07-21
  • RepDB Landing page
    Landing page //
    2026-07-21
  • RepDB
    Image date //
    2026-07-21

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 512ร—512 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.

  • Extensionsly Extensionsly privacy-first browser extension catalog
    Extensionsly privacy-first browser extension catalog //
    2026-07-22
  • Extensionsly Extensionsly browser extension catalog
    Extensionsly browser extension catalog //
    2026-07-22
  • Extensionsly NetworkRules request routing and debugging
    NetworkRules request routing and debugging //
    2026-07-22
  • Extensionsly ReproKit reproducible bug capture workflow
    ReproKit reproducible bug capture workflow //
    2026-07-22

Extensionsly is a browser-extension studio offering privacy-focused Chrome and Edge tools for productivity, development, research, and security. The catalog includes 18 product pages with clear data-use disclosures and verified manual Chrome packages. Eight products support production checkout and account or license fulfillment. Official browser-store listings are still pending, so each product page provides transparent manual-install instructions and links back to the canonical Extensionsly website.

RepDB

Website
repdb.co
$ Details
freemium $199.0 / One-off
Platforms
Web Mobile
Release Date
2026 July

Extensionsly

$ Details
freemium $3.99 / Monthly (Per paid extension; free tools available)
Platforms
-
Release Date
2026 July

RepDB features and specs

  • WebP Format Benefits
    start+peak exercise images
  • JSON
    relations, metadata, equipment
  • Transparency
    transparent background
  • Animations
    Animated loops in paid tier

Extensionsly features and specs

  • Local-First Processing
    Core tasks run on-device with per-product network disclosures
  • Browser Extensions
    18 Chrome and Edge product pages across productivity, development, research, and security
  • Privacy-Focused
    Clear data-use disclosures and no data selling

Category Popularity

0-100% (relative to RepDB and Extensionsly)
Developer Tools
50 50%
50% 50
Health And Fitness
100 100%
0% 0
Chrome Extensions
0 0%
100% 100
Static Assets
100 100%
0% 0

Questions & Answers

As answered by people managing RepDB and Extensionsly.

What makes your product unique?

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.

What's the story behind your product?

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.

Why should a person choose your product over its competitors?

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.

How would you describe the primary audience of your product?

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.

User comments

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What are some alternatives?

When comparing RepDB and Extensionsly, you can also consider the following products