PostCall: a proposal writer that never sends your client calls anywhere (Whisper + Gemma 4, all local)

Description and use

<p><em>This is a submission for the <a href="https://dev.to/challenges/hacktoberfest-week2-2026-10-12">Hacktoberfest Open-Source AI Challenge: Week 2, Side Hustle</a>.</em></p> <h2> What I Built </h2> <p><strong>PostCall</strong> is a desktop app that turns a recorded client discovery call into a draft proposal, without the recording ever leaving your computer.</p> <p>Writing the proposal is the unpaid work after every discovery call, and the obvious fix, pasting the call into a cloud AI, is often not allowed: discovery calls contain the client's plans, numbers and sometimes an NDA. So everyth

Problem

<p><em>This is a submission for the <a href="https://dev.to/challenges/hacktoberfest-week2-2026-10-12">Hacktoberfest Open-Source AI Challenge: Week 2, Side Hustle</a>.</em></p> <h2> What I Built </h2> <p><strong>PostCall</strong> is a desktop app that turns a recorded client discovery call into a draft proposal, without the recording ever leaving your computer.</p> <p>Writing the proposal is the unpaid work after every discovery call, and the obvious fix, pasting the call into a cloud AI, is often not allowed: discovery calls contain the client's plans, numbers and sometimes an NDA. So everyth

Outcome

<p><em>This is a submission for the <a href="https://dev.to/challenges/hacktoberfest-week2-2026-10-12">Hacktoberfest Open-Source AI Challenge: Week 2, Side Hustle</a>.</em></p> <h2> What I Built </h2> <p><strong>PostCall</strong> is a desktop app that turns a recorded client discovery call into a draft proposal, without the recording ever leaving your computer.</p> <p>Writing the proposal is the unpaid work after every discovery call, and the obvious fix, pasting the call into a cloud AI, is often not allowed: discovery calls contain the client's plans, numbers and sometimes an NDA. So everyth

Evidence

PostCall: a proposal writer that never sends your client calls anywhere (Whisper + Gemma 4, all local)

Source