# Baby I/O — Simple way to track your baby

> Simple baby feeding and output tracker with multi-child support. (iPhone/iPad app by Anson Burger.)

- Source: https://appshunter.io/ios/app/baby-io/id1631755808 (this page in markdown: same URL + `.md`)
- Developer: [Anson Burger](https://appshunter.io/developer/1631755810)
- Category: Health & Fitness, Lifestyle
- Price: $4.99
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 26.0 · 5 MB
- Languages: American English
- Released: 2023-02-13
- Data updated: 2026-06-05
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/baby-io/id1631755808/reviews.md

## What is Baby I/O?

Baby I/O is for tracking your baby’s input (feeds) and output (poop/pee). It has these features: 
- One-time purchase NO SUBSCRIPTION FEE! 
- Track feeds
- Track Breast Feeds specifics
- Track bowel movements
- Estimate next feed time
- Track age in months, weeks, years—even days
- Track multiple children at once
- 2 units of measure to chose from:   ml or oz
- All the info you need for the pediatrician visits at your fingertips

Some Back Story: 
Baby I/O is an app built by a new dad for his wife, a new mom, after she was frustrated with the existing baby tracking apps out there. Most apps were to hard to manage at 3am when she just wanted note that our baby ate and had a pee. Seeing these issues and trying out these apps myself I found other issues. Most of these apps require a subscription of sorts which, when you’re a new parent, you have already had to pay for a lot of things (i.e. diapers, formula, etc…) the last thing you want is to have to add an app subscription to all the other expenses. So, to solve these issues I went about designing and building an app that would be super easy to use. So when you’re half a sleep you can still use it with ease.

Thus Baby I/O was born:  an app with very simple controls, high contrast, big icons, and no subscription. These elements combine to make an app that even the sleepiest of parents are able to use with ease. This app allows you to see your baby’s input and output history at a glance. Have twins and you can track both in the same app no extra cost!

*one-time purchase applies to base app in the future there maybe add-ons that will be an additional fee.

## Key features

- Track feeds (breast & bottle)
- Log bowel movements
- Estimate next feed time
- Track age in months, weeks, years, days
- Support for multiple children
- Choice of ml or oz units
- Pediatrician visit data summary


## Frequently asked questions about Baby I/O

### What is Baby I/O?

Baby I/O is a simple application designed to help parents track their baby's feeding and output. It allows logging of breast and bottle feeds, bowel movements, and provides estimations for the next feeding time.

### How much does Baby I/O cost?

Baby I/O is a one-time purchase application, priced at $4.99. There are no subscription fees required to use its core features.

### Can Baby I/O track multiple children?

Yes, Baby I/O supports tracking multiple children simultaneously within the same application at no additional cost. This is ideal for parents of twins or multiple young children.

### Does Baby I/O have ads?

No, Baby I/O is ad-free. The application was developed with a focus on ease of use, especially for parents who may be sleep-deprived, and does not contain advertisements.

### What information does Baby I/O provide for doctor visits?

Baby I/O compiles all the essential input and output data, along with age tracking, into an easily accessible format. This information is readily available to share with pediatricians during appointments.

### What units of measure does Baby I/O support?

Baby I/O offers users a choice between two units of measure for tracking feeds: milliliters (ml) or ounces (oz). This flexibility accommodates different parental preferences and feeding practices.

### How often is Baby I/O updated?

The latest version of Baby I/O is 1.2, which was last updated on March 29, 2026. Future updates may introduce additional features or add-ons for an extra fee.

### Is Baby I/O suitable for very young babies?

Yes, Baby I/O is designed for tracking babies from birth. Its simple interface and high-contrast design make it easy to use even for parents in the early, sleep-deprived stages of caring for a newborn.

## Version history (last 4 releases)

### 1.2 — 2026-03-29

- The UI has been updated for iOS 26 Liquid Glass. 
- Bugs have been squashed.
- Navigation has been improved.
- Database upgraded to SwiftData.

### 1.1.0 — 2023-06-20

This version adds a better way to track breast feed sessions among many other enhancements.

You have two ways to add a breast feed session. They are:
- Entering a start and stop time for each side.
- Using the Timer functionally to automatically track the feeding session per side.

Track breast feed sessions with a brand new mid section view. 
This will help you track:
- Average Feed session lengths.
- Number of breast Feed sessions for that day.

This version also adds a subsection to indicate the number of:
- Diapers changed.
- Feeds sessions.
- Last breast used for the latest breast feeding session that day. 

All these improvements come together help you, the likely sleep deprived parent, manage this thing called parent hood.

### 1.0.1 — 2023-03-14

Bug fixes:
Changes BM Instance to Diapers - This will better describe what is being tracked
Fixing spellings
Spacing 
Better app description
etc...

### 1.0 — 2023-02-13

No release notes.

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## Related topics

[yollo baby](https://appshunter.io/ios/topics/yollo-baby)

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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 2026-06-05.*