Naptara guide

A baby monitor app on two iPhones, or a dedicated baby monitor?

By Tim Grootes, Bumblly · Last updated November 14, 2026

You have a spare iPhone in a drawer. Can it replace a baby monitor, or should you buy one? Both work, and each has weak spots. Here is an honest comparison, with the parts app makers often skip: Wi-Fi and battery.

We make Naptara, a baby monitor app. We tell you where a dedicated monitor does better too.

Short answer

The difference in one paragraph

A dedicated monitor is two units made for one job. Many talk to each other over their own radio link, without your Wi-Fi. A baby monitor app uses phones you already own and your home network, so it costs less and can let you check in from anywhere, but it depends on Wi-Fi, on the phones staying charged, and on the app staying open.

Side by side

Compared point by point

Wi-Fi

Honest about Wi-Fi

• If your Wi-Fi goes down, the picture stops. Naptara notifies the Parent Monitor when the connection to the Baby Station drops, so you know to go and look.
• Weak spots: a nursery at the far end of the house may have poor Wi-Fi. Test the picture there in the evening, before the first night.
• Guest networks and some routers keep devices apart. Then the two iPhones cannot find each other on their own; pairing with the six-character code works on any network.
• The other side: a monitor without Wi-Fi keeps working when the router is off. Infant Optics, for example, says its DXR-8 PRO needs no app or Wi-Fi, reaches up to 1,000 feet in line of sight, and cannot be watched from outside the home (product page).

Battery

Honest about battery

• The Baby Station must stay plugged in. Sending video all night empties any phone, and old phone batteries are often worn.
• Your own iPhone is the Parent Monitor. Watching or listening all night uses battery, so keep it on the charger. You keep listening with the screen locked.
• Naptara warns you on the Parent Monitor when the Baby Station battery drops to 15 %, when it stops charging, and when it gets warm.
• A dedicated parent unit runs on its own battery, so your phone stays free. Its battery wears too: Infant Optics sells a replaceable one (product page).

Privacy

Privacy

A monitor without Wi-Fi never touches the internet. With Naptara, video and sound are encrypted, on your home Wi-Fi and over the internet, there is no account, and Naptara does not store your video. When you watch from elsewhere, the stream does travel over the internet.

Choosing

Which one fits your home

Buy a dedicated monitor when:

• you have no spare phone or tablet;
• your Wi-Fi does not reach the nursery well;
• a babysitter or grandparent should use it without your phone;
• you never need to look from outside the home.

An app makes sense when:

• you have a spare iPhone with iOS 16 or later, which means an iPhone 8, iPhone X or newer (Apple Support), or a spare iPad or Android phone;
• both parents want to watch on their own phone at the same time;
• you sometimes want to check in from elsewhere.

Safety

Safety, whichever you choose

• Keep the monitor and its cords at least three feet from the crib, as the CPSC advises (CPSC).
• Neither kind is a medical device. The American Academy of Pediatrics says there is no evidence that home monitors, such as heart rate and oxygen monitors, lower the risk of SIDS, and warns against a false sense of security (AAP).
• Nothing replaces adult supervision.

More: baby monitor apps compared and an old phone as a baby monitor.