Ask HN: What are you working on? (October 2025)

I'm building telegram bot working with LLMs https://t.me/experai_bot?start=cj1obl9vY3RfMjU . Core ideas are

* LLMs are accessible where telegram is accessible

* Multitude of models to choose from (chatgpt, claude, gemini) and more is coming.

* Full control over the bot behaviour is in user's hands: I don't add any system messages or temperature/top_p. I give UI for full control over system messages, temperature, top_p, thinking, web searching/scrapping and more to come.

* Q/A like context handling. Context is not carried through the whole bot, it's rather carried through chaing of replies. Naturally could be branched or use various models cross messages.

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This is my hobby project and one of main tools for working with LLMs, thus I'm going to stick to it for quite a while.

A static site generator for German laws.

The goal is to serve the laws in a format that is easy to cite, monitor, or machine-read. It should also have predictable URLs that can be inferred from the law’s name. It will also have side by side AI translations (marked as such).

I cite a lot of laws in my content and I want to automatically flag content for review when a specific paragraph of the law changes. I also want to automatically update my tax calculator when the values change.

Basically, a refresh of gestetze-im-internet.de and buzer.de.

Yes, I liked the description of what it does, but at first glance am not sure what to do with the interface.

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I'm working on mTOR (https://mtor.club), a free, science-based workout tracker I built to automate progressive overload. It's a local-first PWA that works completely offline, syncs encrypted between your devices using, passwordless passkeys, and allows for plan sharing via a simple link.

The core idea is to make progression easier to track and follow. After a workout, it analyzes your performance (weight, reps, and RIR), highlights new personal records (PRs), and generates specific targets for your next session. It also reviews your entire program to provide scientific analysis on weekly volume, frequency, and recovery for each muscle group. This gets displayed visually on an anatomy model to help you learn which muscles are involved, and you can track your gains over time with historical performance charts for each exercise.

During a workout, you get a total session timer, an automatic rest timer, and can see your performance from the last session for a clear target to beat. It automatically advances to the next incomplete exercise, and when you need to swap an exercise, it provides context-aware alternatives targeting the same muscles.

It's also deeply customizable:

- The UI has a dark theme, supports multiple languages (English, Spanish, German), lets you adjust the UI scale, and toggle the visibility of detailed muscle names, exercise types, historical performance badges, and a full history card. - You can set global defaults for weight units (kg/lbs), rest times, and plan targets, or enable/disable metrics like Reps in Reserve (RIR) and estimated 1-Rep Max. The exercise library can be filtered by your available equipment, you can create your own custom exercises with global notes, and there's a built-in weight plate calculator. - The progression system lets you define default rep ranges and RIR targets, or create specific overrides for different lifts (e.g., a 3-5 rep range for strength, 10-15 for accessories). - Editing is flexible: you can drag-and-drop to reorder days, exercises, and sets, duplicate workout days, track unilateral exercises (left/right side), and enter data with a quick wheel picker.