# Hyaku: 100-Day Baby Photos — Monthly Photos & Growth Diary

> Monthly Photos & Growth Diary (iPhone/iPad app by Seiko Aoki.)

- Source: https://appshunter.io/ios/app/hyaku-100-day-baby-photos/id6798543491 (this page in markdown: same URL + `.md`)
- Developer: [Seiko Aoki](https://appshunter.io/developer/1661277448)
- Category: Photo & Video, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 48 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-08-25
- Data updated: 2026-08-26
- User reviews in markdown: https://appshunter.io/ios/app/hyaku-100-day-baby-photos/id6798543491/reviews.md

## What is Hyaku?

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.


## Version history (last 1 release)

### 1.0 — 2026-08-25

No release notes.

## More apps by Seiko Aoki

- [Railroad Crossing Kids: Safe](https://appshunter.io/ios/app/railroad-crossing-kids-safe/id1661277446)
- [Fumikiris - Railroad Crossings](https://appshunter.io/ios/app/fumikiris-railroad-crossings/id6760018984)

All apps by Seiko Aoki: https://appshunter.io/developer/1661277448

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*