Best Baby Sleep Apps UK (2026): Trackers & Nap Predictors Compared
Every baby sleep app promises the same miracle: an end to the guessing. Log the naps, and the app tells you when the next one is due — no more wondering whether the crying means tired, hungry or simply outraged. The promise is real, but the apps deliver it very differently, at very different prices, and one of them is really a sleep-coaching programme with a tracker attached.
Here's an honest UK comparison of the sleep apps parents actually use. Full disclosure: we make one of them (CubTrack). One scope note — this is about sleep tracking and prediction apps, not white-noise or lullaby apps, which are a different (and mostly interchangeable) category.
The short answer: if sleep is a full-blown crisis and you want expert-built plans, Huckleberry's top tier is the category leader. If you want nap predictions without a big subscription, CubTrack includes feed and sleep predictions in its free tier, which also covers you and one partner. CubTrack Plus (£4.79 a month on Android or £4.99 on iPhone) adds grandparents and other carers, more children, full history, growth charts and next-nap and next-feed reminder notifications. If sleep timing is your main concern, Napper is a polished nap-timing specialist with a free plan. For plain, free logging, Baby Tracker (Nighp) remains the fastest, and on iPhone it now offers What's Next predictions on a paid Plus subscription.
What a sleep app can and can't do (read this first)
A sleep app can spot patterns you're too tired to see: the real length of your baby's wake windows, the nap that always runs short, the bedtime that's drifting later. What it can't do is make a baby sleep. Predictions are pattern-matching on your logs — brilliant for timing the settle, useless against a sleep regression, teething week or growth spurt. Any app promising to "fix" sleep is selling the plan, not the tracker.
Quick comparison
| App | Sleep superpower | Free version | Paid from | Best for |
|---|---|---|---|---|
| Huckleberry | SweetSpot nap predictions + expert sleep plans | Yes (basic logging) | From £10.99/mo or £64.99/yr (Plus); sleep plans £12.99/mo (Premium) | Sleep as the number-one problem |
| CubTrack | Feed & sleep predictions included free; shared family timeline | Yes — includes predictions, 1 child, you + one partner | £4.79–£4.99/mo | Calm tracking + predictions on a budget |
| Napper | Dedicated nap prediction and sleep schedules | Yes — daily sleep tracking and an age-based schedule; 7-day trial of Unlimited | £39.99/yr (Napper Unlimited) | Nap timing as the single focus |
| Smart Sleep Coach by Pampers (Android only in the UK) | Structured sleep-coaching programme | 7-day free trial, then paid | Subscription; UK price not published | Step-by-step coaching over tracking |
| Onoco | Sleep logging within an all-in-one family organiser; AI nap predictions on Premium | Yes | £8.99/mo or £59.99/yr | Tracking plus wider family admin |
| Baby Tracker (Nighp) | Fast, simple sleep logging; What's Next predictions on Plus (iPhone) | Yes (with ads; sync included) | £4.99 one-off to remove ads; Plus £5.99/mo or £49.99/yr | Fast logging, radical simplicity |
Prices from the UK App Store (Napper's from napper.app), checked 14 September 2026.
The apps, in detail
Huckleberry — the sleep-science heavyweight
SweetSpot predictions refined by a sleep-science team come with Huckleberry Plus (£10.99 a month or £64.99 a year). The top tier, Premium (£12.99 a month or £105.99 a year), adds expert-designed sleep plans and an AI parenting chat, though there are no live sessions with a sleep consultant. If you'll genuinely use the plans, nothing else matches them; if you mainly want logging and a nap nudge, the free tier and Plus cover that, and Premium is a programme you won't open. We've covered the price question — and the cheaper routes — in our Huckleberry alternatives comparison.
CubTrack — predictions without the premium
CubTrack's angle is simple: the "when's the next nap due?" answer shouldn't need a subscription. Feed and sleep predictions are in the free tier, logging is one-tap and one-handed, and the record is a shared family timeline so whoever's on duty sees the same day, free for you and one partner. CubTrack Plus (£4.79 a month on Android, £4.99 on iPhone) adds unlimited carers and children, full history and next-nap and next-feed reminder notifications; the PDF report for the health visitor is free. What it doesn't have: sleep-coaching content — it's a calm tracker, not a programme.
Napper — the nap-timing specialist
A polished nap and bedtime predictor with a devoted following, and a full tracker too: it logs feeds, nappies and medication, and you can share your baby's log with other caregivers. The Free plan covers daily sleep tracking and a sleep schedule based on your baby's age; Napper Unlimited (£39.99 a year, with a 7-day free trial) adds personalised sleep analysis, a sleep course, sleep sounds and trends. If sleep timing is your main question, its sleep-first focus is the appeal.
Smart Sleep Coach by Pampers — the guided programme
Closer to an online sleep course with tracking attached than a tracker with extras: structured, step-by-step coaching content, plus a sleep schedule that predicts nap and bed times. Suits parents who want to be told exactly what to do next; overkill if you just want to log naps. It isn't on the App Store, so in the UK it's Android only: a 7-day free trial, then a monthly, three-month or yearly subscription. The UK price isn't published.
Onoco — sleep within the family organiser
Solid, free sleep logging inside a broader tracker-plus-organiser, with AI nap predictions on Onoco Premium (£8.99 a month or £59.99 a year). You choose it for the whole package rather than sleep specifically — more features, more to navigate.
Baby Tracker (Nighp) — logging without opinions
No coaching and no account needed — just fast sleep (and feed, and nappy) logging, free with ads. Other carers can join a free sync group (one shared email and password) and see the same log. Since 1 September 2026 it has also offered What's Next predictions on iPhone, through a new Plus subscription (£5.99 a month or £49.99 a year, after a 3-day free preview). The right choice if you mainly want a record, not advice.
How to choose
- Crisis or curiosity? Broken nights you can't fix → Huckleberry Premium's sleep plans or a coaching programme. Wanting better nap timing and a tidy record → CubTrack or Napper.
- Who needs to see the data? Two parents doing handovers need a genuinely shared timeline — our both-parents comparison covers which apps do this properly.
- What's the real cost over a year? Billed yearly, paid sleep tiers run from about £40 to £106: Napper Unlimited £39.99, Baby Tracker Plus £49.99, Onoco Premium £59.99, Huckleberry Plus £64.99 and Huckleberry Premium £105.99. Decide what the prediction is worth before the free trial decides for you.
And whichever you pick: predictions get sharper the more consistently you log, so the best sleep app is the one whose logging you'll actually keep up at 3am. Pair it with our bedtime routine by age guide for the settling side of the equation.
Related reading
- 6 Best Baby Tracker Apps UK (2026): Feeds, Sleep & Nappies Compared
- Huckleberry Alternatives UK (2026): 5 Baby Tracker Apps Compared
- Baby Tracking Apps for Both Parents: Shared Trackers Compared
- Wake Windows by Age: A UK Parent's Chart for 0–24 Months
- Baby Nap Schedule by Age: A UK Guide & Chart
Frequently asked questions
What's the best baby sleep app in the UK?
For expert-designed sleep plans, Huckleberry Premium leads. For nap and sleep predictions without a big subscription, CubTrack includes them free. For a dedicated nap-predictor, Napper is the specialist. The best choice depends on whether you want a guided sleep plan, predictions, or simply a reliable shared record.
Is there a free baby sleep tracker app?
Most sleep apps have free tiers for basic logging, but predictions are usually paid. CubTrack is the exception — its free tier includes feed and sleep predictions for one child. Fully free coaching doesn't really exist; that's what the subscriptions fund.
Do nap prediction apps actually work?
They're good at pattern-matching: once you've logged a week or two, predictions genuinely help time the settle before overtiredness hits. They can't override regressions, illness or developmental leaps — expect them to wobble exactly when sleep does.
Which sleep app should I use for a newborn?
Under twelve weeks, sleep is too irregular for schedules — prediction apps shine from around 2–3 months when patterns emerge. Before that, simple logging (and our newborn wake windows week-by-week guide) is more useful than any algorithm.
Prices and features checked against the UK App Store, Google Play and each developer's own site on 14 September 2026. CubTrack is made by OakFox Limited; this article includes our own app alongside competitors we rate.
