One API for 80+ AI models โ LLM, image, video & music โ priced up to 80% below the official APIs. Pay only for successful calls; failed runs refunded; credits never expire.
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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.
Charmstone 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, Charmstone seems to be more popular. It has been mentiond 12 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.
I use Charmstone for spatial app switching - https://charmstone.app/ Not the same as full spaces, but it gives the same vibe of always having a particular app on a particular hotkey. I try to limit my multi-tasking though, so I can imagine where full spaces would be useful. - Source: Hacker News / 2 months ago
If OSes were optimized like RTS games, maybe the mouse could be plenty fast. Something like https://charmstone.app/ but for many actions. - Source: Hacker News / over 1 year ago
Charmstone (Paid) The quicker switcher launcher for macOS, same as Rcmd. Just another choice I guess. Source: over 3 years ago
Not exactly what you are describing: Charmstone. Source: over 3 years ago
Charmstone [1] is a different take from everything mentioned here (I'm the developer). The idea is to use your spatial memory to switch/launch apps faster than anything else that I've found, with a smaller learning curve and less memorization. You can use keyboard shortcuts with the arrow keys, modifier keys + cursor movement, or a trackpad gesture. [1] https://charmstone.app. - Source: Hacker News / over 3 years ago
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Raycast - Fastest way to control Jira, GitHub and other web apps
Lacona - Fast, simple, powerful keyboard-driven commands for Mac
rcmd - rcmd makes app switching instantaneous!When you have a lot of apps open, finding and switching to them might feel too slow using Command-Tab or the Dock.Hold down the right side |โ command| and press the first letter of the app name to focus it.
Pieoneer - Let your apps fly โ in a pie
Swish - Insanely great window management