LumiDays: AI Baby Companion
Log, Journal, Guide, Milestone
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New: invite family & caregivers! You decide which tabs each person sees and whether they can edit. Your nanny can join and log feedings and more with you!
Everyone asks how the baby is doing. Almost no one asks how you're holding up.
LumiDays was built to support the tired, slightly lonely parent behind the screen — with daily letters that meet you where you are, an AI companion who remembers your family's story, and a private timeline to keep the moments that matter.
Now with a one-hand baby log — and room for everything a tracker can't hold.
Hoping to be your family's parenting teammate and a safe space along your parenting journey.
Four core features, each meant to bring a little warm light to your parenting days:
【 A LETTER EVERY DAY 】
Every day, receive a warm letter written for your baby's age and development stage, and a few quiet words for Mom — and for Dad. Less than a minute to read.
【 ASK MIRU, ANY HOUR 】
・"Why won't she nap?" "How do we start solids?" Or simply "I'm so touched out today." — Miru the owl is always there to talk.
・Miru remembers what matters, so you never start from zero.
・Dad can ask too — same chat, same context, so it stops being one person's job, it's a team!
・Whisper mode keeps the things you can't say out loud to yourself.
【 NEW: A BABY LOG — ONE HAND OR ONE SENTENCE 】
・Turn the wheel with your thumb to log feeds, diapers, sleep and more — 21 categories.
・Type it or say it — Miru splits it into separate entries.
・"Your little rhythm" shows the time since the last moments at a glance.
・Mom and Dad see the same log.
【 A BABY TIMELINE FOR FAMILY MEMORIES 】
・Photos, videos, or one line on the days that's all you've got — capture your baby's everyday as it happens.
・Invite your partner and the grandparents. Private sharing with the family you choose.
・Looking back, it becomes one long, lovingly kept record.
【 We value Privacy 】
We know how precious your family's data is.
Your conversations and photos are NOT used to train AI models, and they stay private to the family you invite.
This is the very reason LumiDays was built.
We can't take the 3 AM wake-ups. We can make sure you're not doing them alone — a little warm light, every day.
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・FREE to download; premium features available via subscription.
・For families with children aged 0-3.
・Available in 3 different languages — English, Traditional, or Simplified Chinese.
・AI content is parenting information for reference only, and is never a substitute for a doctor's diagnosis or professional medical advice.
・Terms of Use: https://lumidays.ai/terms
・Privacy Policy: https://lumidays.ai/privacy
• Invite family & caregivers: a new Caregiver role lets your nanny join and log your baby's care with you.
• Fine-grained access, free: choose which tabs each family member sees (Timeline, Care Log) and whether they can edit.
• Smaller UI fixes and improvements.
The developer, LumiArc LLC, 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:
- Health & Fitness
- Purchases
- Contact Info
- User Content
- Identifiers
- Usage Data
- Sensitive Info
- Diagnostics
- Other Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- LumiArc LLC
- Size
- 115.5 MB
- Category
- Medical
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Simplified Chinese, Traditional Chinese
- Age Rating
13+
- 13+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Lux Yearly $199.99
- Lux Monthly $29.99
- Pro Yearly $99.99
- Pro Monthly $12.99
- Copyright
- © 2026 LumiArc LLC