Relationship tracker: Duo
Love Counter & Couple Widget
Only for iPhone
Free · In‑App Purchases
iPhone
Duo is a private couple space and relationship tracker designed for two people.
Start solo and invite your partner anytime with a simple invite code.
Whether you’re a new couple building memories, in love and tracking your relationship, in a long-distance relationship, or already married, Duo helps couples track their relationship and celebrate their journey together.
Why couples use Duo
- See how long you’ve been together with a live dating counter and love counter
- Track your relationship with a simple relationship tracker and dating tracker
- Save special memories, milestones, and love notes in your couple timeline
- Use widgets to see your relationship progress directly on your screen
- Keep a private space built just for you and your partner
Duo makes it easy to remember the little things and celebrate the big ones.
Features
Time Together Counter
See exactly how long you’ve been together from your chosen start date.
Display your relationship time in years, months, days, hours, or minutes.
Perfect for anniversaries, milestones, and everyday reminders of your relationship.
Moments Timeline
Save memories, events, and milestones in a shared relationship timeline.
Capture both past memories and upcoming events so you can revisit your story anytime.
Rich Moment Details
Add photos, notes, dates, and locations to your moments.
Search and filter memories easily to rediscover important parts of your relationship.
Map + Distance
See distance and shared location context when you both enable location sharing.
Great for long-distance couples who want to feel more connected.
Memory Map
Explore your shared memories visually on a map and see where important moments happened.
Private Duo Space
Create or join a couple using a secure invite code.
Your shared relationship space stays private between you and your partner.
Widgets (Duo Pro)
Add beautiful widgets to your Home Screen or Lock Screen.
Widgets make it easy to keep your relationship visible throughout the day.
Built for real relationships
Whether you’re a new happy couple building memories, in love and looking for something to track, in a long-distance relationship, or a perfect match or married, Duo helps couples track their relationship and celebrate their journey together.
Start your shared timeline today.
Download Duo and begin building your relationship story together.
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Terms of Service:
https://keinois.com/duo/terms-of-service
Privacy Policy:
https://keinois.com/duo/privacy-policy
Ratings & Reviews
We’ve improved onboarding to make getting started faster and smoother, with bug fixes and polish across the app.
Questions or feedback? Contact us at duo.app.team@gmail.com
The developer, Lyndavan Doan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Location
- Contact Info
- User Content
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Lyndavan Doan
- Size
- 30 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Duo Pro (Annual) $8.99
- Duo Pro (Lifetime) $14.99
- Duo Pro (Week) $0.99
- Duo Pro (Week) $2.99
- Duo Pro (Lifetime) $29.99
- Duo Pro (Annual) $17.99
- Copyright
- © 2026 Lyndavan Hong Doan
