Full disclosure: Milli is our app. This comparison is written by the team that makes it, so read it with that in mind. We have tried to keep it genuinely useful: we say clearly where other apps are stronger, and every claim about a competitor comes from its official website or store listing (linked in Sources). Pricing and features change - always check the current listing before deciding.
There is no single best baby tracker for everyone - it depends on what you need. If you want every feature free with no subscription, Milli is built exactly for that. If you want data-driven sleep coaching, Huckleberry's premium sleep predictions lead the category. If you coordinate with a daycare or nanny, Baby Connect is the most established. This guide compares them honestly so you can pick in five minutes.
The Short Answer: Side-by-Side Comparison
| App | Price model | Account required | Works offline | Caregiver sharing | Strongest for |
|---|---|---|---|---|---|
| Milliour app | Free, ad-supported. No subscription, no locked features | No - guest mode works with no sign-up | Yes - offline-first, syncs when back online | Yes - real-time sync via invite code, free | The most features for free; two parents on one timeline |
| Huckleberry | Free tier + Premium subscription | Yes | Cloud-based; designed around a synced account | Yes | Sleep coaching and nap-time predictions |
| Baby Connect | Subscription | Yes | Cloud-based; designed around a synced account | Yes - its core strength | Daycare, nanny and large-family coordination |
| Glow Baby | Free tier + Premium subscription | Yes | Cloud-based; designed around a synced account | Yes | All-round logging inside the Glow app family |
Details reflect official listings as of July 2026 and are simplified - see each app's own site for current pricing and the full feature list.
Everything in Milli Is Free - Here's What That Covers
The clearest difference between Milli and the rest of the category is not any single feature - it's the pricing column. Features that competitors typically split between a free tier and a monthly subscription are all included in Milli at no cost:
| Feature | Milli | Most other trackers |
|---|---|---|
| Feeding, sleep and diaper logging | Free | Free tier in most apps |
| WHO growth percentile charts (weight, height, head circumference) | Free | Included in some, premium in others |
| Real-time family sharing, unlimited caregivers | Free | Free in some apps, paid or limited in others |
| Developmental milestones, 0-24 months across 5 domains | Free | Varies by app |
| Medicines, vaccines and health events - encrypted | Free | Rarely all three in one app; encryption is uncommon |
| On-device PDF doctor report | Free | Typically a premium feature |
| Sleep Helper: age-based wake windows and nap schedules | Free | Sleep analysis is usually the premium upsell |
| Multi-child profiles | Free | Sometimes limited or paid |
| Built-in mini-games for night feeds (Solitaire, 2048, Tile Pop) | Free | No other major tracker has this |
| Works offline with no account | Yes | Almost none - cloud accounts are the norm |
The right-hand column is generalized on purpose: each competitor draws its paywall in a different place, and those lines move. The left-hand column doesn't - in Milli there is no paywall to draw.
What Actually Matters in a Baby Tracker
After the first sleep-deprived week, most parents discover the same five things separate a tracker they keep from one they delete:
- Friction at 3AM. Logging a feed one-handed, half-awake, has to take seconds. If it takes three screens, you will stop logging within a week.
- Both parents on the same data. The whole point of tracking is answering "when did she last eat?" without waking your partner. Sharing should be real-time and shouldn't cost extra.
- Offline reliability. Nurseries have dead zones, planes exist, and servers go down. An entry should save instantly on the device, every time.
- A way to show the doctor. Pediatricians ask about feeds, sleep, diapers and growth. A tracker that exports a clean summary saves you scrolling through history in the exam room.
- Honest pricing. Freemium is fine, but you want to know before you invest weeks of data which features sit behind the paywall.
Milli - Best If You Want Everything Free
Milli is a free baby tracker for iPhone and Android with no subscription tier at all: feeding (breast, bottle, formula, solids), sleep, diapers, WHO growth percentile charts, developmental milestones, medicines and vaccines, multi-child profiles, and real-time family sharing are all included. It is supported by ads, and baby data is never shared with advertisers.
Two design choices set it apart. It is offline-first: every entry saves on the device instantly and syncs to the shared family timeline when a connection returns. And it needs no account to start - guest mode works immediately, and you only create an account if you want a partner or grandparent to join via invite code. It can also generate an on-device PDF doctor report covering feeding, sleep, growth, health events and vaccines - and it is, as far as we know, the only baby tracker with built-in mini-games (Solitaire, 2048, Tile Pop) to keep you awake through the long night feeds.
Where it's weaker: Milli gives age-based wake-window guidance but has no machine-learning nap predictions like Huckleberry's SweetSpot. There is no Apple Watch app and no daycare-oriented staff features. It currently ships in English and Russian only, and it is a newer app without the decade-long track record some competitors have.
Huckleberry - Best for Sleep Coaching
Huckleberry made its name on sleep. Its free tier covers standard logging, and its Premium subscription unlocks SweetSpot - a prediction of your baby's ideal next nap window based on logged sleep data - plus personalized sleep plans developed with sleep experts. Families who fight naps and night wakings often find the subscription worth it for this alone.
Trade-offs: the headline features require the paid subscription, an account is required, and if you only need straightforward logging you will be paying for analysis you may not use.
Baby Connect - Best for Daycare and Nanny Coordination
Baby Connect is one of the oldest trackers around and is built for many caregivers on one child: parents, grandparents, nannies, and daycares that report through it. Its logging categories run deep - moods, activities, temperature, medicines, cups and more - and its coordination features are the most mature in the category.
Trade-offs: it is subscription-based with no meaningful free tier, the interface is dense and utilitarian, and an account is required.
Glow Baby - Solid All-Rounder in the Glow Ecosystem
Glow Baby covers the standard logging set - feeds, sleep, diapers, growth, milestones - with a free tier and a Premium subscription for advanced insights and comparisons. It makes the most sense if you already used Glow's fertility or pregnancy apps and want to stay in one ecosystem.
Trade-offs: deeper insights sit behind Premium, an account is required, and the app regularly promotes the wider Glow suite.
Other Apps Worth Knowing
- The Wonder Weeks - not a tracker but a paid guide to developmental leaps; parents often run it alongside a tracker to understand fussy phases.
- Baby Daybook - a capable logger, popular on Android, with a free core and a premium tier.
- Nara Baby and Sprout Baby - trackers with strong health-record and doctor-visit features.
The Bottom Line
Feature for feature, Milli gives you the most tracker for zero dollars: everything in the free-feature table above is included, where competitors typically split the same list between a free tier and a monthly subscription. In our view there are only two honest reasons to pick something else - you want Huckleberry's machine-learning nap predictions, or your daycare already reports through Baby Connect. If neither applies to you, Milli is the app we'd tell any new parent to install first. And because it needs no account and no payment details, trying it costs nothing but the download.
Frequently Asked Questions
Which baby tracker has the most features for free?
Milli. Feeding, sleep, diapers, WHO growth charts, milestones, medicines and vaccines, PDF doctor reports, real-time family sharing and multi-child support are all free, supported by ads - features most competitors place in a paid tier.
What is the best baby tracker app?
It depends on what you need. For a completely free tracker with real-time family sharing, Milli is a strong choice. For data-driven sleep coaching, Huckleberry's premium SweetSpot predictions lead the category. For daycare and nanny coordination, Baby Connect is the most established option.
Which baby tracker apps are completely free?
Most baby trackers use a freemium model where advanced features require a subscription. Milli is free with ads and has no subscription or locked features. Huckleberry and Glow Baby offer free logging tiers with paid premium upgrades.
Do I need an account to use a baby tracker?
Usually yes - most trackers require sign-up so data can sync through the cloud. Milli is an exception: it works in guest mode with no account, and you only create one if you want family sharing across devices.
Can two parents share one baby tracking app?
Yes. Milli, Huckleberry, Baby Connect and Glow Baby all support multiple caregivers. In Milli, a partner or grandparent joins with an invite code and new entries sync between devices in real time, at no cost.
Sources
Competitor details were checked against these official pages on July 14, 2026:
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