# 280days vs Baby Billy

The clearest difference is in-app purchases: Baby Billy at none against 280days's 2. Baby Billy also leads on ads (none vs shown) and update cadence (weekly vs every 2 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. 280days sells 2 one-off in-app purchases. Baby Billy asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for 280days against 4.9 for Baby Billy. Both are backed by a comparable volume of ratings — 482 and 233 respectively. Written reviews are what separate them: 88% of 280days's written reviews are positive against 93% of Baby Billy's.

280days ships an update every 2 months, Baby Billy weekly. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | 280days | Baby Billy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (482 ratings)](https://appshunter.io/ios/app/280days-pregnancy-diary-app/id995864179/reviews) | **[4.9 (233 ratings)](https://appshunter.io/ios/app/baby-billy-pregnancy-and-baby/id1497301126/reviews)** |
| Number of ratings | **482** | 233 |
| Positive reviews | 87.8% of reviews | **93.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 91 MB | 267 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 12+ |
| Developer | [amane factory inc.](https://appshunter.io/developer/942974986) | [VillageBaby Inc](https://appshunter.io/developer/1520827289) |

## What reviewers say

### 280days

[App page](https://appshunter.io/ios/app/280days-pregnancy-diary-app/id995864179)

Track your pregnancy journey with daily updates on your baby's growth and your physical condition. Share milestones and photos with your partner, and turn your records into a keepsake book.

**Highlights:** Baby growth visualization with illustrations, Daily physical condition and medical checkup tracking, Shared pregnancy records with spouse, Maternity photo and memory diary, Week-by-week pregnancy advice, Pregnancy countdown and weight management, Export records as a book

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ad Banner remove | $1.99 | one-time |
| BABY BOOK data ver.(PDF) | $3.99 | one-time |

**What reviewers like**

- 💕 Cute and adorable app
- 📚 Informative and helpful content
- 🤝 Ability to share with partner
- 📝 Useful for tracking pregnancy
- 🎨 Lovely illustrations

**What reviewers complain about**

- 🐛 Crashes and freezes
- 🔍 Limited customization options
- 📏 Lack of imperial unit support
- 🌈 Limited skin tone options for baby
- 🏳️‍🌈 Not inclusive of diverse family structures

**Reported bugs**

- Diary entries getting deleted
- Unable to link accounts between devices
- Notifications not working as expected

**Requested features**

- Add option to report pregnancy loss
- Improve app stability and performance
- Allow changing baby's name and gender
- Provide more skin tone options for baby
- Support single parents and LGBTQ+ families


### Baby Billy

[App page](https://appshunter.io/ios/app/baby-billy-pregnancy-and-baby/id1497301126)

Track your pregnancy week by week with expert advice on mom and baby's development. Connect with a supportive community of parents for tips and share your journey with family.

**Highlights:** Week-by-week pregnancy tracking, Baby development milestones, Expert prenatal care guidance, Parenting community forum, Photo gallery, Personal diary

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 280days free?

280days is free to download, with in-app purchases available.

### Is Baby Billy free?

Baby Billy is free to download, with no in-app purchases.

### Which has better reviews, 280days or Baby Billy?

Baby Billy is rated higher. 280days averages 4.8 out of 5 from 482 ratings, while Baby Billy averages 4.9 from 233 ratings.

### Do 280days or Baby Billy have ads?

280days shows ads; Baby Billy does not.

### Which is updated more often, 280days or Baby Billy?

280days ships an update every 2 months, and Baby Billy weekly. Most recently, 280days was updated on September 22, 2026 and Baby Billy on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*