
Auphonic
Descript
Alitu
Riverside.fm
Xound.io
AudioLinter analyzes podcast audio to EBU R128 and one-click-repairs it to -16 LUFS with true peak below -1 dBTP, right inside WordPress. Uploaded files are deleted within 48 hours on EU servers.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | audiolinter.com | diffyn.com |
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What each product offers, as listed by its team.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
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As answered by people managing AudioLinter and Diffyn.
AudioLinter's answer
It checks and fixes podcast loudness (EBU R128, −16 LUFS), true peak (−1 dBTP) and dead air directly inside the WordPress post editor — no separate app, no file upload to a third-party dashboard. One-click repair, not just a report.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
AudioLinter's answer
Most loudness tools are standalone apps or require exporting to an external service. AudioLinter runs where podcasters already publish — WordPress — and fixes the file in place. EU-hosted, uploaded audio deleted within 48 hours, free analysis tier with no card required.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
AudioLinter's answer
PHP/WordPress plugin frontend, Python/FastAPI backend for audio analysis (EBU R128 loudness, true-peak metering), Next.js marketing/account site, self-hosted on Hetzner (EU).
Diffyn's answer:
React, Next.js, POSTGRESQL
AudioLinter's answer
Independent podcasters and small podcast networks who self-host on WordPress (often via Podlove or similar plugins) and want their episodes to meet Spotify/Apple/YouTube loudness specs without hiring an audio engineer.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
AudioLinter's answer
Built by a solo developer in Germany who kept seeing podcast episodes rejected or downranked for loudness/true-peak issues that a simple automated check could catch before publishing. Built directly into the WordPress workflow podcasters already use.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
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