Sai – Couple Location & Diary

Contains adsIn-app purchases
Content rating
Everyone
0+
Downloads
Content rating
Everyone
Users Interact, Shares Location
Learn more
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About this app

Sai is a couple app for two: share your location with each other, plan your days, and keep the moments you spend together.

Location sharing, just between you two
Turn on location sharing to see each other’s latest location on a map. Choose to share for 1 hour, until the end of today, or until you turn it off. While sharing is on, it keeps going even after you close the app. Turn on auto records to save the paths you walked and the places you stayed together.

A photo calendar for both of you
Browse your memories on a monthly photo calendar, and tap a date to see that day’s plans and entries. Color-code your own plans and the ones you share, and set repeating plans, multi-day plans and reminders.

Photos and words
Add up to 6 photos to an entry and write a diary. Keep the conversation going in the comments, and find past entries with search. Entries written while offline are sent automatically once you’re back online.

Chat and anniversaries
Chat with each other, and see how many days you’ve been together and which anniversaries are coming up. A Home Screen widget shows your days together too.

You choose what to share
Location sharing and auto records are used only when each of you turns them on, and photo access is limited to what you allow. Period records are private by default, and you choose separately whether to share dates and notes. Predicted period dates are calculated on your device from your own records or the cycle you enter, and are never shared. Predictions may differ from actual dates and are not for diagnosis or contraception.

Backup
Export your entries and photos as a backup, and preview what will come back before you restore.

Supports light, dark and system appearance. For ages 14 and up. Inside Korea the map uses Kakao Map; elsewhere it uses OpenStreetMap-based maps.

Contact: contact@neuralab.kr
Share location with your partner, plan days together, and keep photos & diary.
Updated on
Oct 28, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    Location, App activity and 2 others
  • This app may collect these data types
    Location, Personal info and 6 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Introducing Sai Plus. When one of you subscribes, you both use Sai without ads.
Content rating
Everyone
Users Interact, Shares Location
Learn more

App support

About the developer
뉴럴랩
contact@neuralab.kr
대한민국 31253 충청남도 천안시 동남구 병천면 5산단로 420, 207동 511호(부경 타운하우스 2단지)
+82 70-8095-2710