Software Alternatives, Accelerators & Startups

Greasemonkey VS RepDB

Compare Greasemonkey VS RepDB and see what are their differences

Greasemonkey logo Greasemonkey

Customize the way a web page displays or behaves, by using small bits of JavaScript.

RepDB logo RepDB

Exercise dataset for fitness apps: transparent background, animations, no subscription
Visit Website
  • Greasemonkey Landing page
    Landing page //
    2021-09-17
  • RepDB Standard exercise dataset
    Standard exercise dataset //
    2026-08-15
  • RepDB Starter tier
    Starter tier //
    2026-08-15

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 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.

Greasemonkey

Pricing URL
-
$ Details
Platforms
-
Release Date
-

RepDB

Website
repdb.co
$ Details
freemium $299 / One-off
Platforms
Web Mobile
Release Date
2026 July

Greasemonkey features and specs

  • Customization
    Greasemonkey allows users to customize the appearance and functionality of a website by injecting JavaScript code, offering a high degree of personalization.
  • User Community
    A large community of users and developers contributes to a vast library of scripts, enabling users to easily find and install scripts that meet their needs.
  • Open Source
    As an open-source project, Greasemonkey encourages transparency and collaboration, allowing developers to contribute and improve the functionality of the extension.
  • Cross-Platform Compatibility
    Greasemonkey scripts are compatible with most modern browsers through various extensions, allowing scripts to work across different systems.

Possible disadvantages of Greasemonkey

  • Security Risks
    Scripts can potentially contain malicious code, leading to security vulnerabilities if users install scripts from untrusted sources.
  • Script Maintenance
    Users may need to maintain or update scripts themselves, especially when websites update their layout or functionality, causing existing scripts to break.
  • Limited Browser Support
    While Greasemonkey is primarily designed for Firefox, users of other browsers might need to use alternative extensions like Tampermonkey, which may not support all features of Greasemonkey.
  • Learning Curve
    Users who wish to create or modify scripts need a good understanding of JavaScript, which may pose a challenge to those less familiar with coding.

RepDB features and specs

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

Category Popularity

0-100% (relative to Greasemonkey and RepDB)
Browser Extensions
100 100%
0% 0
Datasets
0 0%
100% 100
Dark Mode
100 100%
0% 0
Developer Tools
75 75%
25% 25

Questions & Answers

As answered by people managing Greasemonkey and RepDB.

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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Social recommendations and mentions

Based on our record, Greasemonkey seems to be more popular. It has been mentiond 1 time 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.

Greasemonkey mentions (1)

  • Auto-redirect from English to Simple English if such an article exist in Simple English
    // ==UserScript== // @name Wikipedia Redirect // @namespace https://greasespot.net // @version 0.1 // @description Redirect from English Wikipedia to Simple English Wikipedia if the page exists // @author Noname // @match https://en.wikipedia.org/wiki/* // @grant none // ==/UserScript== (function() { 'use strict'; let currentURL = window.location.href; let... Source: over 3 years ago

RepDB mentions (0)

We have not tracked any mentions of RepDB yet. Tracking of RepDB recommendations started around Jul 2026.

What are some alternatives?

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

Violentmonkey - Violentmonkey is a userscript manager to support running userscripts in web pages.

Tampermonkey - Greasemonkey compatible script manager.

Userscripts - An open-source userscript editor for Safari.

Greasy Fork - A site for user scripts.

Database Script Tool - Database Script Tool is an all-in-one functional code generator that allows you to generate several types of code, including SQL standard commands, classes, resource files, HTML 5 forms, Data managers, and more to add.

Script Manager โ€“ SManager - Script Manager โ€“ SManager is an Android application that makes it easy for you to execute scripts and executables, file manager, multi-tab browser root explorer, and terminal emulator.