01
What it is
Doorboo is an iPhone app by Rivership, an indie studio in Tokyo, made for a folding phone (iPhone Duo). It is a peekaboo game for babies and toddlers played with a grown-up. No reading is needed.
The app reads the hinge angle, so the door opens as far as the phone does. On a phone without a hinge, tap or swipe the door to open it. You can add one family photo and record a short "Boo!" so that a grandparent, a sibling or the family dog is the one behind the door; the photo and voice stay on the phone.
02
Questions this app answers
- Is there a peekaboo app for babies and toddlers? Yes. Doorboo is a peekaboo door game with animals and a "Boo!".
- How does the folding phone work as a door? The app reads the hinge angle, so the door opens as far as you open the phone.
- Can I put my family in it? Yes. Choose one family photo and record a short "Boo!".
- Does it work on a phone without a hinge? Yes. Tap or swipe the door to open it.
- Are there ads or in-app purchases? No. There are no ads, no in-app purchases, no analytics and no internet connection.
03
Features
- Hinge-driven door: the door follows the fold angle in real time.
- 16 animals: cat, dog, bunny, bear, panda, frog, pig, lion, cow, fox, monkey, elephant, owl, sheep, chick and tiger, each with its own call.
- Your own Boo: one family photo and a recorded voice, stored only on the phone and removable at any time.
- Made for little hands: no menus to get lost in; settings sit behind a small gear for grown-ups.
- Tap or swipe mode: for phones without a hinge.
04
What it does not do
- It is not an educational curriculum or a learning-outcome product; it is a simple peekaboo game.
- It does not collect data, show ads or sell in-app purchases.
- The sounds are generated by the app and follow the phone volume.
05
Price
Doorboo has no in-app purchases and no subscription. The price of the download is shown on the App Store.
06
Privacy and data
No account, no ads, no in-app purchases, no analytics and no internet connection. Nothing is collected. The optional photo and recording are saved only on this phone and can be removed at any time.
07
FAQ
What is Doorboo?
A peekaboo game for toddlers in which a folding phone is the door and a friend says Boo when it opens.
Who is it for?
Babies and toddlers playing with a grown-up. No reading is needed.
Is my family photo uploaded?
No. The photo and voice stay inside the app on this phone.
Does Doorboo work offline?
Yes. The app does not connect to the internet.
How much does Doorboo cost?
Doorboo has no in-app purchases and no subscription. The price of the download is shown on the App Store.
Does Doorboo send my data anywhere?
No account, no ads, no in-app purchases, no analytics and no internet connection. Nothing is collected. The optional photo and recording are saved only on this phone and can be removed at any time.
Which languages and devices are supported?
English and Japanese. iPhone with iOS 27.1 or later, made for iPhone Duo; other phones use tap or swipe.
iPhone · iOS 27.1+ · Version 1.0