Tinder says yes. Its Safety and Policy Center says it has strict policies and technical systems in place. Those include encryption for user photos and messages, plus tools that restrict employee access to user communications and other data. The same page says Tinder does not sell data to third parties. What encryption cannot do is protect a chat from the other person in it, and that part is entirely up to you.

What Tinder says it protects

There are three separate promises on that page, and they cover different worries.

Encryption covers your photos and your chats as Tinder handles them. It is the protection against outsiders getting at them.

The access tools cover the people inside the company. Tinder says it restricts employee access to what users send each other, so a chat is not something any staff member can casually open and read.

The line about data covers what happens to your information commercially. Tinder states plainly that it does not sell data to third parties.

For most men, that answers the question they were really asking, which is whether someone at Tinder is reading their chats for fun. By Tinder's own account, the systems are set up to stop that.

What no encryption can cover

Encryption protects a conversation on its way between two people and while a company holds it. It does nothing about the two people.

The woman you are talking to has your words on her screen. She can read them aloud at brunch, pass her phone across the table, or take a photo of the screen. None of that involves breaking anything. It is simply what happens to a sentence once it reaches the person you sent it to.

So the useful question is not how secure the app is. It is whether you would be comfortable with your words being seen by someone other than the woman you wrote them to.

Write as if her friends will read it

Plenty of women show a promising conversation to a friend, and plenty show a strange one too. Assume any message you send could end up in front of her best friend, and write accordingly.

That rule is not about being dull. A funny, flirty line reads well to a friend looking over her shoulder, and it often helps you, because the friend says "he seems fun." What reads badly is anything crude, anything needy, and anything you would not say to her face across a table.

a dating coach's advice on the early part of a conversation fits here. Keep it light and fun, and let anything sexual wait until she is clearly enjoying the exchange. A line that follows that advice survives being shown to anyone.

Moving to another app changes the rules

Once you swap numbers or move to Instagram or WhatsApp, the chat is no longer on Tinder, and what Tinder says about its own protections no longer applies to it. Every app has its own settings, and your phone number is attached to more of your life than your Tinder account is.

That is fine, and moving off the app is a normal step before a date. Just make it when the conversation has earned it, not in your first reply. Until then, Tinder is the one place where the two of you share only what you have chosen to put there.

Keep her privacy the way you want yours kept

Plenty of men who want help with their dating life end up showing their chats to someone, whether a friend, a group chat or a coach. That is often the fastest way to learn, and it is fine to do.

Do it the right way. Crop out or cover her name, her face, her number and anything else that identifies her before a screenshot leaves your phone. A well-run coaching group that swaps screenshots for feedback makes this a written rule, because the woman on the other end never agreed to be anyone's example. If you would be annoyed to find your own messages posted with your face beside them, extend her the same courtesy.

What to keep out of any chat

Some things stay out of a chat with someone you have not met, whatever the app promises. Your home address, your workplace in detail, anything to do with money, and any login or verification code sent to your phone.

A real match does not need any of that before a first date. If someone asks for it early, treat the request itself as the answer to whether you are talking to a real person with good intentions.