A Huckleberry alternative with free sleep predictions

I built Rhythm after using other trackers with my own son. Huckleberry is a good app with a big head start. If you want a native iPhone app, a home-screen widget, an Apple Watch companion, or a paid custom sleep plan, Huckleberry does those; Rhythm does not.

The clearest difference is which half you pay for. Huckleberry syncs across caregivers for free and puts sleep predictions behind Plus at $11.99/mo. Rhythm gives away the predictions and charges $5/mo for sync.

Huckleberry pricing, Apple Watch support, and how SweetSpot generates predictions checked against huckleberrycare.com/pricing, the Huckleberry App Store listing, and Huckleberry's SweetSpot explainer on July 16, 2026, re-checked August 19, 2026 to confirm it still describes SweetSpot as a target sleep time built from logged sleep and age guidelines only, telling parents to subtract their own routine and settle time rather than tracking put-down duration itself. Tracked activities, custom events, milk stash, export, and which tier includes caregiver syncing re-checked against the same pricing page and App Store listing, plus Huckleberry's export instructions, on July 27, 2026. Where a row says something is not in Huckleberry's listing, that means their own published description does not mention it.

Choose based on what you want to change

You want predictions without another subscription

Rhythm's wake-window predictions are on the free tier, computed on your phone from your baby's own days.

You want your data stored locally

Rhythm is local-first: everything stays on your device unless you turn on sync, and there is no account until then.

You want a tracker that can quiet down

If the dashboard itself was stressing you out, Calm Mode hides the timers, warning borders, and predictions in one tap while everything keeps being recorded.

Where Huckleberry is the better choice

Choose Huckleberry if a true native app matters to you - widgets, an Apple Watch companion, voice logging, or an AI assistant. If you want a paid, custom sleep plan built from your logs alongside tracking, Huckleberry offers that and I do not.

Where Rhythm is different

Predictions without a subscription, and without "AI".

Rhythm starts with an age-based range, then moves to your baby's own history as soon as there is enough of it: each wake window is learned from your baby's recent days, separately for each nap and for bedtime. No model trained on other people's babies, and nothing to call home to, so the predictions keep working on a plane, in a basement, or on hospital wifi that pretends to exist. Every number says whether it came from an age default, your baby's logged sleep, or a setting you chose, and how many days it learned from. If it looks wrong, you override it, or ignore it.

One flat price for the whole household.

The full app is free on one device. Sync, partner invites, and backup are $5/month per household - your partner, a grandparent, and a nanny are all one price. 14-day free trial, cancel anytime, and your local data stays put if you stop.

Your baby's data is yours.

Everything runs on your device by default. If you sync, a copy lives on my servers so your other devices can read it. It's encrypted in transit, with encrypted offsite backups. No ads, no tracking pixels, no selling data. You can export your data anytime (CSV or JSON).

Switching from Huckleberry

You do not have to start over. Export your data from Huckleberry (it comes through as an email), then in Rhythm open Settings, Import, Huckleberry, and upload the file. Sleep, feeds, diapers, pumping, medicine, and nine more record types come across, so your history and your patterns move with you. See which records import and follow the step-by-step guide.