Baby tracker apps, compared

Verified on September 2, 2026 from each app’s own pricing page and store listing. Prices are US list prices, differ by country and store, and some were promotional when checked — your store shows the exact amount before you confirm.

Sources: Huckleberry pricing page (huckleberrycare.com/pricing); Napper pricing page (napper.app/en/pricing); Baby Tracker App Store listing; Luli’s own content/en/pricing.yaml.

Which baby tracker app is cheapest?

Baby Tracker is the cheapest outright: free and ad-supported, with a one-time $4.99 to remove ads. It does not predict naps.

Among the apps that do predict naps, Luli Premium is the lowest subscription, from $39.99 a year — below Huckleberry Plus at roughly $69 a year and Napper Unlimited at $69.99. All three have a free tier, and two of them put a nap estimate in it.

Is there a free alternative to Huckleberry SweetSpot?

SweetSpot® is part of Huckleberry’s paid plans, not its free tier, and it is offered from two months of age.

Luli’s age-based nap estimate is in the free version, from day one. Napper’s free tier also includes an age-based sleep schedule. So yes — you can get a nap estimate without paying.

Being straight about it: a free age-based estimate and a paid personalized one are not the same thing. Luli’s personalized prediction, built from your own baby’s logged sleep, is part of Premium. If a prediction tuned to your specific baby is what you are paying for, compare Luli Premium against Huckleberry Plus on price rather than free tier against SweetSpot on features.

Which apps let two parents share one log?

All four have a way to share, and they differ in cost and in how immediate they are.

Huckleberry includes multi-device syncing for caregivers in its free tier. Luli’s shared tracking updates in real time but is part of Premium. Baby Tracker syncs between devices through iCloud, Dropbox or AirDrop. Napper describes profile sharing with a partner or caregiver on its site.

If a shared log at zero cost is the deciding requirement, Huckleberry’s free tier covers it and Luli’s does not.

Which ones predict naps, and how?

• Luli — from age-appropriate wake windows in the free version, refined by your baby’s own logged sleep in Premium.
• Huckleberry — SweetSpot®, in the paid tiers, from two months.
• Napper — an age-based sleep schedule, available in the free tier.
• Baby Tracker — no prediction; it is a log, not an estimator.

One thing worth saying because nobody else does: none of these apps publishes a validated accuracy figure, and there is no shared benchmark to compare them on. Any page telling you one predicts better than another is describing a preference. What genuinely improves an estimate is data — a prediction built from your own baby’s history gets better the longer you log, and in the first eight weeks every prediction is wide, because a newborn has not settled into a pattern yet.

More on this: are wake windows accurate for newborns under 8 weeks.

Which is better for logging feeds and diapers?

Baby Tracker logs more, and logs it for free: a nursing timer, formula, solids and pumping, diaper notes, growth against WHO averages, medications and vaccines, and PDF export for the pediatrician.

Luli logs breastfeeding, bottle, solids and diaper changes as part of Premium, in the same timeline as sleep. The reason to pay for that is not the logging itself — it is that the feeding and diaper history sits next to the sleep history and the nap estimate built from it.

If you do not want a nap prediction, Baby Tracker covers feeds and diapers at no cost, and there is no reason to pay for a tracker that does.

Luli vs Huckleberry: which should you choose?

Huckleberry includes caregiver syncing in its free tier and Luli does not — a shared log at zero cost is only in Huckleberry’s free tier. A nap estimate at zero cost is in Luli’s free version, not SweetSpot®. On price, Luli Premium is from $39.99 a year against roughly $69 for Huckleberry Plus.

Luli vs Napper: which predicts naps more accurately?

Neither publishes a validated accuracy figure, and there is no shared benchmark between them, so a claim either predicts more accurately is a preference. Both put an age-based estimate in the free tier. Luli’s Premium prediction is built from your baby’s own logged sleep, improving with data. Napper Unlimited is $69.99 a year, Luli Premium from $39.99 a year.

Cheaper alternatives to Huckleberry

Baby Tracker is free and ad-supported, with a one-time $4.99 to remove ads, and does not predict naps. Napper Unlimited is $69.99 a year. Luli Premium is from $39.99 a year, with a free trial of 3–7 days, and its age-based nap estimate is in the free version. Prices verified 2 September 2026 from each app’s own pricing page.

What Luli is, in one paragraph

Luli is a baby sleep and routine tracker for 0–24 months, on iPhone and Android, in 24 languages. Free: sleep logging, an age-based nap prediction and your last 7 days of history. Premium from $39.99 a year: a personalized prediction, feeding and diaper tracking, shared tracking, full history and advanced statistics, with a free trial on most offers (3–7 days, depending on the current offer).

Plans and pricing — see the pricing page

How we compare

Only figures published by each app: its own pricing page, its own store listing. No accuracy claims, because no app publishes a measurable one. No ratings of other apps. Every table carries the date it was verified, and we re-check quarterly — if the date above is more than three months old, check the app’s own page before deciding.