Kotidy VS Diffyn

Kotidy's answer

Kotidy puts everything that keeps a home running in one shared app: real-time shopping lists, recipes and weekly meal plans, projects, recurring chores and a family calendar. Chores can rotate automatically between members, and a fairness dashboard weighted by difficulty shows who carries what, with no ranking. One subscription covers the whole household with unlimited members. It works on Android, iOS and the web, offers home screen widgets, and is available in English, French, Italian and Spanish.

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.

Kotidy's answer

Most households end up with one app for groceries, another for the calendar, a to-do app only one person opens, and a whiteboard on the fridge. Kotidy replaces all of them with a single space everyone shares, synced instantly: tick an item at the supermarket and it is ticked for everyone. The free plan has no time limit, no card and no cap on members. Premium costs €2.99/month or €24.99/year for the whole household, not per person. Mixed iPhone and Android households can use it together, and household data is hosted in France and never sold.

Diffyn's answer:

Diffyn is the platform that specializes on both change management and multi-model analysis.

Diffyn's answer:

React, Next.js, POSTGRESQL

Kotidy's answer

Couples and families, with or without children, who share the day-to-day running of a home: groceries, chores, household projects and schedules. It also suits roommates. The common thread is people who want to share the mental load instead of carrying it alone.

Diffyn's answer:

Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.

Kotidy's answer

Kotidy started in spring 2026 as a side project for my own household: my partner and I needed a simple way to coordinate groceries, share chores fairly, follow home projects and keep track of our baby's appointments. It began as a web app, grew into native Android and iOS apps published in August 2026, and is now self-hosted in France.

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.

Kotidy's answer

• Kotidy is a consumer app: its users are individual households (couples, families and roommates), not companies
• We don't publish names of the households using it