x2oStudio vs Milk Bottle
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
x2oStudio
Easily view class schedules, book your spot, and monitor your fitness journey. Stay organized and motivated with this comprehensive tool.
- View class schedules
- Book classes
- Track progress
- Manage your fitness journey
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See our schedule, book classes, track your progress!
Milk Bottle
A private routine tracker for parents and caregivers to log feedings and diaper changes. It offers a 15-day free trial, after which a one-time purchase unlocks all features. Sync data privately across Apple devices.
- One-tap feeding logging
- Multiple feeding types recorded
- Next feeding time prediction
- Customizable feeding intervals
- Diaper change logging
- History filtering by date and type
- iCloud sync for data backup
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Milk Bottle is a simple, private routine tracker for parents and caregivers. Download it free and use every feature for 15 days. After the trial, a one-time $0.99 purchase unlocks Milk Bottle for continued use. There is no subscription. Log a feeding with one tap, then record direct nursing, breast milk, ready-to-feed formula, powdered formula, or any combination in the same entry. See today's total milk and a separate breakdown for each measured feeding type. Milk Bottle also helps you: • See the next feeding time based on the latest feeding • Customize the next-feeding interval • Optionally schedule a local night-feeding reminder • Log poop and pee diaper changes • Select a date to see total milk, breast milk, poop count, and pee count • Filter history by date and entry type • Edit or delete any entry • Add your baby's name and photo • Optionally sync with your private iCloud across your Apple devices • Switch between English, Simplified Chinese, and Mexican Spanish • Use an adaptive layout on iPhone and iPad Your entries, baby name, settings, and selected photo stay inside the app on your device unless you choose to enable iCloud sync. When enabled, Milk Bottle uses your private CloudKit database to sync across devices signed in to the same Apple Account. The developer cannot view that private data. Milk Bottle has no developer account, advertising, analytics, tracking, developer server, or third-party data SDKs. Payment and purchase restoration are processed by Apple through StoreKit. Routine data is never included with a purchase. Milk Bottle is a routine-recording tool and does not provide medical advice.
Screenshots
Verdict
The clearest difference is in-app purchases: x2oStudio at none against Milk Bottle's 1. x2oStudio also leads on ratings volume (303 vs 1). Milk Bottle's advantage is update cadence (every 2 days vs every 3 weeks). On price, rating, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Milk Bottle sells 1 one-off in-app purchase. x2oStudio asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for x2oStudio against 5.0 for Milk Bottle. That said, the two scores are not equally well evidenced: x2oStudio has 303 ratings behind it against 1, so its average is the more settled of the two.
x2oStudio ships an update every 3 weeks, Milk Bottle every 2 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.
| Parameter | x2oStudio | Milk Bottle |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (303 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 303 — better | 1 |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 38 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | HartCore LLC | YUANLIN DENG |
In-app purchases
x2oStudio
No in-app purchases
Milk Bottle
- Lifetime Access$0.99








