TinyDays小日子 vs Otuli
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TinyDays小日子
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Welcoming a newborn is a beautiful journey, but keeping track of their routine can be overwhelming. TinyDays is an ultra-intuitive baby tracker app designed for new parents! We eliminated cluttered interfaces to bring you the simplest and fastest way to log your baby's daily activities. Key Features: [One-Tap Logging] Easy to use even while holding your baby! Quickly log nursing, bottle feeding, solid food, diaper changes, and sleep. [Smart Sleep Tracker] Track cross-day sleep seamlessly. Automatically calculates total sleep duration. [WHO Growth Charts] Built-in World Health Organization (WHO) growth standards to easily monitor your baby's height, weight, and head circumference. [Custom Reminders] Never miss a feeding or pumping session again with personalized alarms. [Multi-Language & Themes] Supports multiple languages, perfect for international families or caregivers. [Privacy First] Your baby's data is safely stored locally on your device with PDF export support. ——— Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Otuli
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Baby care, held together. Otuli is the shared baby care log for tired hands and interrupted nights. Log a breastfeed, bottle, diaper, sleep or pumping session in one tap, and everyone you invite sees the same up-to-date timeline through iCloud: your partner, a grandparent, the nanny, the sitter. PICK UP WHERE THEY LEFT OFF • See everything since a time you choose: feeds, diapers, sleep and notes, and who logged each one • Send a care card to whoever is taking over, with the last feed, sleep and any notes • Invite each caregiver to add entries, or to view only • Keep logging offline and let Otuli sync when the connection returns QUICK WHEN YOU'RE TIRED • Log left and right breastfeeds, bottles, wet and dirty diapers, pumping, sleep, waking, temperatures and notes • Arrange your one-tap quick log bar and keep the actions you use less one swipe away • Press and hold a button for your own durations and amounts • Log earlier for the feed nobody had a spare hand to record • Undo mistakes, and recover deleted entries for 30 days ANSWERS AT A GLANCE • See the last feed, wet diaper and dirty diaper without searching • Know which breastfeeding side is next, on your iPhone or your Apple Watch face • Check today's totals, the last 24 hours, and the gaps between feeds • At night, compare tonight so far with last night by now • Spot daily rhythms in the activity grid, month by month • Track twins or siblings with a separate timeline for each baby BUILT FOR REAL NIGHTS • Red-on-black night mode, on a schedule or whenever you tap the moon • Home Screen and Lock Screen widgets • Ask Siri to log a feed, diaper or pump, check the last feed or the next side, or hear what happened today • Shared care reminders for vitamin D, tummy time, pump kit washes and everything else, with notifications chosen on each device READY FOR THE CHECKUP • Turn any date range into a printable PDF care report with daily totals, for the pediatrician • Keep temperatures in °F or °C beside the feeds and diapers from the same day • Export the complete care log as CSV whenever you want • Keep scheduled on-device backups and export encrypted Otuli backup files MAKE IT YOURS • Six themes and eight app icons • Say wee or pee, poo or poop, boob or breast, sleep, nap or down time PRIVATE BY DESIGN There is no Otuli account and no Otuli server holding your baby's care log. Your entries live on your device and sync through your own private iCloud. There are no ads. Anonymous analytics are optional and never include what you log. FREE, WITH ONE PURCHASE FOR SHARING Logging and the whole care log are free. Otuli Together is one payment, not a subscription: it unlocks sharing, plus the Live Activities for a running sleep and the pump kit countdown. Everyone you invite is covered by your purchase. Otuli is a logging tool, not medical advice. --- Privacy: https://otuli.app.markbattistella.com/privacy/ Terms: https://otuli.app.markbattistella.com/terms/ EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is ads: Otuli at none against TinyDays小日子's shown. On price, update cadence, in-app purchases 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. TinyDays小日子 sells 1 in-app purchase, starting at $0.99 per month and Otuli sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.
| Parameter | TinyDays小日子 | Otuli |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days | Every 5 days |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, Apple Watch |
| Requires iOS | 18.6 | 18.0 — better |
| Further details — not scored | ||
| Size | 5 MB | 57 MB |
| Age rating | 4+ | 12+ |
| Developer | Chen minyu | Mark Battistella |
In-app purchases
TinyDays小日子
- 解鎖無廣告$0.991 Month
Otuli
- Otuli Together$9.99









