hellodex

Remember who you met, and where.

Hellodex keeps a face, a place and a story with every person you meet, and shows you who introduced you to whom.

Download on the App Store Get it on Google Play

Free to download. Your contacts stay viewable forever, subscribed or not.

Dana Okafor

Met at BSides SF
  • Moscone West, San FranciscoWhere you met
  • April 26, 2026When you met
  • Maria LopezIntroduced by

Maria has introduced you to 4 people

  1. Maria
  2. Dana
  3. Jae

From handshake to history in a few taps

Add someone while the conversation is still fresh. Hellodex fills in the rest.

  1. Snap and save

    Take a photo, type a name. Hellodex adds where you are and today’s date for you.

  2. Note the introduction

    Pick who introduced you, or add them on the spot. When a friend shares a contact, they’re recorded automatically.

  3. See the connections

    Months later, see everyone a person led you to, and how any two people you know are linked.

Built for people who meet a lot of people

Conferences, meetups, weddings, client visits. Everything a contacts app forgets.

A face and a place

Every contact keeps a photo, the event, the spot on the map and the date you met.

Introduction networks

See who someone introduced you to, and who those people introduced you to, by 1st, 2nd and 3rd degree.

How are they connected?

Pick any two people to find shared events, places, introducers and workplaces.

Sync that never deletes

Two-way sync with your phone’s contacts. It fills in and updates, but never erases a contact or a field.

Share with a tap

Send a contact to another Hellodex user, or as a contact card to anyone. Your private notes stay private.

Locked with Face ID

Keep your network to yourself. Hellodex can ask for Face ID or a fingerprint every time it opens.

Free to keep. Pro to grow.

Everything you’ve saved stays yours to view, edit and share, whether or not you subscribe.

Free

Always

  • View, search and edit your contacts
  • Introduction networks and connection finder
  • Share contacts and invite friends
  • Face ID lock, light and dark mode

Hellodex Pro

Monthly or yearly. See prices in the app.

  • Add new people, with photo and place
  • Two-way sync with your phone’s contacts
  • Import contacts from your phone
  • Save contacts friends share with you

Your network is nobody’s business but yours

  • No ads, and we never sell your data.
  • Only you can see the contacts you save.
  • Location is read only when you add someone, never in the background.
  • Face ID happens on your phone. We never see it.
Read the privacy policy