
LinearB
GitPrime
Waydev
Swarmia
CodeClimate
Athenian
Teamplify
Software Delivery Analytics Tool for Engineering Teams. Deliver Software Faster, Better, and more Predictably.

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

Which is more popular?
Based on our record, Haystack Analytics seems to be more popular. It has been mentioned 2 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | usehaystack.io | repdb.co |
| Pricing | ||
| Platforms | ||
| Company | Startup from the United States · 1 - 9 employees · 2019 | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


Haystack is a real-time delivery analytics platform designed for engineering leaders like CTOs, VPs of Engineering, Directors of Software Engineering, and Engineering Managers. Haystack provides actionable insights that enable data-driven decision-making, aligning engineering performance with...
RepDB is a one-time-purchase exercise dataset with animations for developers building fitness and workout apps — 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...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
Haystack (YC W21)
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Haystack Analytics and RepDB.
Haystack Analytics's answer
Engineering Leaders and Managers
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.
RepDB's answer:
RepDB is sold as a one-time download, not a metered API — 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 — 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.
Share your experience with using Haystack Analytics and RepDB. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Heads up: site is not loading. Ios Safari & macOS Chrome. Mixed Content: The page at 'https://usehaystack.io/' was loaded over HTTPS, but requested an insecure favicon 'http://www.usehaystack.io/favicon.ico'. This request has been... - Source: Hacker News / over 5 years ago
Hey HN! I'm Julian, co-founder of Haystack (https://usehaystack.io). We’re building one-click dashboards and alerts using Github data. While managing teams from startups to more established companies like Cloudflare, my cofounder Kan and... - Source: Hacker News / over 5 years ago
Tracking RepDB since Jul 2026.
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