# Changelog · Memory Map

> Meaningful improvements to Memory Map’s private ChatGPT-history analysis.

Canonical: https://chatgpt.significanthobbies.com/changelog/

## Memory Map launched

2026-07-28

- ChatGPT export ZIPs can be analyzed entirely in the browser without uploading conversation history to an application server.
- The first report connected recurring questions, themes, activity, language signals, and source evidence.

## A visual atlas and seven-slide story

2026-07-28

- Six period-aware charts make activity, question mix, language, repeats, topic movement, and conversation shape explorable.
- Story mode turns the report into a keyboard-, touch-, and swipe-friendly guided view with evidence detours.

## Graph-routed, local Memory Chat

2026-07-28

- An opt-in local model can answer through a visible question-to-topic-to-evidence route.
- Bounded evidence packs and citation validation withhold unsupported drafts rather than presenting them as grounded.

## Faster analysis with clearer timing

2026-07-28

- WebGPU acceleration and an order-preserving WebAssembly fallback reduce semantic analysis time across supported devices.
- The progress view now separates stages, elapsed time, estimated wait, and the final execution receipt.

## Related
- [Home](https://chatgpt.significanthobbies.com/)
- [About](https://chatgpt.significanthobbies.com/about/)
- [Changelog](https://chatgpt.significanthobbies.com/changelog/)
- [Official export instructions](https://help.openai.com/en/articles/7260999-how-do-i-export-my-chatgpt-history-and-data)