Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
Swim Data Analyser is a web-based tool for swimming training data, used to view, edit, and analyze .fit files, which are mainly generated by Garmin devices. Its biggest highlight is that all file processing is done in the browser, so training files are not uploaded to a server. After the site is fully loaded, it can even analyze workouts without an internet connection, and some browsers also support installing it as a PWA.
The tool supports loading local FIT files and also provides demo files for trial use. Its features cover visual editing, stroke selection, pool length settings, split/interval handling, and export to JSON or FIT. On the analysis side, it includes workout summaries by stroke type, best continuous performances over standard distances, heart rate changes during training, stroke rate in SPM, the relationship between strokes per length (SPL) and pace, and more. It is clearly designed specifically for swimming scenarios rather than as a general-purpose sports data viewer.
The main content does not mention fees, subscriptions, or a commercial version, and it currently appears to be free to use directly. The project aims to be based on free and open-source software as much as possible, and welcomes suggestions via GitHub or email. However, its FIT file parsing and encoding currently depend on Garmin’s proprietary SDK, so strictly speaking, it is not a fully free and open-source technology stack. The page does not show any public API, SDK, self-hosting guide, or systematic developer documentation.
Its strengths are strong privacy protection, clear local processing, and an offline/PWA experience well suited to personal sports data analysis. It can also edit and re-export FIT files, which is very practical for correcting stroke type, pool length, or split errors. Its drawbacks are that it currently leans toward single-workout analysis, while long-term trends and account systems are still future plans. Exporting also removes Best Efforts records, and support for non-Garmin or non-swimming scenarios is not evident.
It is suitable for individuals, coaches, and data enthusiasts who use Garmin to record swimming workouts, especially users who do not want to upload their sports files to third-party servers. The main content does not provide information on access from mainland China, so this cannot be determined and is marked as unknown.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on swimdata.org official site.
swimdata.org is an Unknown Online Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach swimdata.org directly.