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WhatsApp chat analysis for your relationship: how it works and what happens to your data

TuCora can read an exported WhatsApp chat and show you, in numbers, what the conversation already says: who initiates, who replies, how much affection circulates and how the rhythm changed over time. All computation happens on your phone.

First things first, because it's a private chat: the file is never uploaded. The analysis runs 100% on your device, offline, with no cloud AI, and nobody (including us) can read the conversation. You can check it yourself: it works the same in airplane mode.

What it measures

Balance: messages, words, who starts the conversation, who gets the last word of the day, response times (median), question rate.
Reciprocity: dry replies, times you were left waiting for hours, double texting.
Affection: caring words and emojis, "we" talk, future plans, week by week.
Night rhythm: how much of the conversation happens at night, days with goodnights (and whether they were mutual).
Trends: weekly volume, cadence changes, dead days, how the balance between you evolved.
Emotional tone: share of positive and negative expressions across the weeks.
Wrapped: top emojis, laughs, peak day, longest streak, hour-by-weekday heatmap.

No metric is a verdict. The app won't tell you "break up" or "they're the one": it surfaces signals you don't see day to day, and the interpretation is yours.

How to use it

In WhatsApp: open the chat → menu → More → Export chat → "Without media". You get a .txt file.
In TuCora: open Chat analysis and import that file.
Seconds later you see the full report. You can save the analysis and, if you export the same chat again later, compare how it changed.

It works best with two-person chats. WhatsApp date formats in Spanish and English are detected automatically.

TuCora chat analysis screen: weekly trends and hour heatmap, with the note that everything was computed on the phone

Why we do it on your phone and not on a server

A relationship chat is among the most intimate data on your phone. Uploading it to a server for analysis (even "securely") creates a copy outside your control. We prefer the simplest guarantee there is: never receiving the chat at all. The analysis engine lives inside the app; there are no network requests during analysis and we use no behavioral analytics SDKs. Technical details in security and the privacy policy.

Frequently asked questions

Will the other person find out? No. They don't need to install anything, and the analysis doesn't interact with WhatsApp: it only reads the file you exported.

Does it use AI? Not for chat analysis. These are metrics computed with transparent rules (counts, timings, an affection lexicon). That's why it can run offline.

Does it work on old chats? Yes. The analysis describes the period covered by the chat you exported, on its own timeline. You can also save analyses from different dates and see the change between them.

Is it free? Chat analysis is part of Premium. The journal, relationship tracking and the online relationship check-in are free.

Does this replace therapy? No. TuCora is not a health app and gives no diagnoses; it's a tool for personal logging and clarity.

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