Hyaku: 100-Day Baby Photos
Monthly Photos & Growth Diary
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Celebrate your baby's first 100 days, one photo a day.
Hyaku turns your baby's daily photos into a keepsake video or photo collage - perfect for the 100-day milestone, monthly baby photos, and everyday growth records. No writing required: just add today's photo, and the app takes care of the rest.
WHO IT'S FOR
- Parents who want to mark their baby's 100th day with something special
- Anyone building a monthly baby photo collection
- Parents who found it hard to organize 100 days of photos after the fact
- Anyone who gave up on video editors with too many settings to learn
- Parents wary of handing family photos to an unfamiliar cloud service
- Anyone who doesn't want another subscription
HOW IT WORKS
1. Pick a photo, or shoot one with the built-in alignment guide camera
2. Adjust position and size, then save it to today's slot
3. When the album is complete, export a video or a photo collage
A few taps a day, and a finished keepsake is waiting at the end.
BUILT TO KEEP YOU GOING
- A calendar view that always shows today's slot, plus elapsed and remaining days
- A little confetti celebration every time you add a photo
- Gentle reminders only on days you haven't added a photo yet - no nagging once you have
- An alignment guide that overlays yesterday's (or Day 0's) photo so every shot lines up
- A recap screen once the album is complete, placing your first and last photos side by side
THREE ALBUM TYPES
- 100-Day Album: a daily record from Day 0 to Day 100
- Monthly Photo Album: an optional starting photo plus one photo per month, months 1-12
- Countdown Album: a daily record counting down to any milestone within 100 days
ONE PHOTO, TWO KEEPSAKES
Each photo keeps a separate crop for video and for the square collage grid, so one photo can be polished for both.
- Video: 0.5-2 seconds per frame, an optional cover, a day counter, and short daily captions. Choose from 5 included royalty-cleared tracks or your own music, with adjustable volume and tempo. Export to your gallery and a dedicated folder, then share with ready-made social captions.
- Collage: pick from several layout families, 5 color themes, and 2 style presets, with control over borders, spacing, and corner rounding. Preview at export quality, and save favorite settings as a named preset. Wallpaper-sized exports too.
- Short video clips (beta): register a few seconds of video in a slot instead of a still photo.
YOUR PHOTOS STAY ON YOUR DEVICE
Photos are stored locally, not on a server - no account or card required to get started for free. Export everything (photos plus edits) as a ZIP file anytime, and re-import it on the same or a different device. Recording and exporting both work fully offline.
PRICING
The core app is free. Paid features are one-time, per-album purchases - no monthly subscription for editing or exporting.
- Free: one 100-Day/Countdown album plus one Monthly Photo album, 1 photo/day, standard quality, watermarked
- Monthly Photo Album (one-time purchase, adds one book): up to 3 photos/day, high-quality export, no watermark, custom colors
- 100-Day Album (one-time purchase, adds one book): up to 3 photos/day, high-quality export, no watermark, custom colors
Try any paid look before you buy - only exporting requires a purchase. No ads.
FROM THE DEVELOPER
As a mother of three, I made a "100-day video" for each of my children, and each one became a treasure I still watch again and again. But shooting every day, then editing 100 days of photos into something worth keeping was genuinely hard work. That gap is why Hyaku exists - to make the whole journey, from today's photo to the finished video, effortless.
ALSO GREAT FOR
Beyond baby photos, Hyaku suits any daily record with a clear end date - fitness progress, art projects, or a countdown to any goal.
A sleepy face, a photo from behind, or just an ordinary tired day - every photo counts. Make your baby's first 100 days a little more fun to record, one photo at a time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Thank you for using Hyaku!
- Fixed an issue where photos could be missing from the video preview and exported video in albums created earlier or imported from a ZIP file
We're sorry for the inconvenience.
The developer, Seiko Aoki, 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
- Contact Info
- Contacts
- Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Seiko Aoki
- Size
- 50.1 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 4 more
- English, Japanese, Korean, Simplified Chinese, Traditional Chinese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- 100 Days Album $3.99
- Monthly Photo Album $2.99
- Copyright
- © 2026 Bluearrow