vitababyFor parents who count every gram.
When a baby gains slowly, the in-between weeks are the hardest part. VitaBaby turns scattered feeds and weigh-ins into a clear trend — with calorie context and calorie-dense recipe ideas — so you can walk into the next appointment with a record, not a worry.
How VitaBaby helps with slow weight gain
Slow weight gain is one of the loneliest worries in early parenting — appointments are short, memory is fuzzy, and a single weigh-in tells you very little. VitaBaby is built to make the trend visible and the next conversation easier.
- Weight trend, not noise — log weigh-ins and see them plotted against age-appropriate bands (centile / percentile), with slower weeks highlighted.
- Calories linked to growth — daily nutrition breakdowns connect what your baby eats to how they are growing.
- Calorie-dense recipe ideas — age-appropriate, weight-gain-focused first foods and meals tuned to your baby's profile.
- Clinician-ready summaries — a clear one-page record for your health visitor, GP, or pediatrician.
Not medical advice
VitaBaby is a tracking and planning tool — it does not diagnose or treat anything and is not a replacement for professional advice. Sustained slow weight gain or a downward centile crossing should always be reviewed by your health visitor, GP, or pediatrician.
Guides on slow weight gain
How to track your baby’s weight gain at home
A practical UK guide to tracking baby weight at home: weighing consistently, reading the trend, using Red Book and WHO centile charts, and when to see your health visitor or GP.
The best app for slow-gaining or underweight babies
What to look for in an app for slow weight gain, how VitaBaby helps parents track feeds, calories, and growth, and when slow gain needs a health visitor or GP.
How to share your baby’s feeding logs with your health visitor or GP
Turn weeks of feeding and weight logs into a clear one-page summary for your health visitor or GP appointment, and learn what information clinicians find most useful.
How to tell if your baby is eating enough calories
Practical signs your baby is getting enough to eat — steady weight gain, wet nappies, alertness — plus how tracking calories and feeds helps, and when to seek advice.
AI recipes for baby food: calorie-dense first foods
How AI recipe tools help with weaning and slow weight gain, examples of calorie-dense first foods, allergy and choking safety, and how VitaBaby tailors recipes by age.
Cow’s milk protein allergy and slow weight gain
How cow’s milk protein allergy (CMPA) can affect a baby’s weight gain, the symptoms to look for, how it differs from reflux or colic, and dairy-free ways to support growth.
Toddler not gaining weight and fussy eating
Why toddlers often slow down on weight and become fussy eaters, what faltering growth means, calorie-dense ideas that help, and when to see your health visitor or GP.
The best app for tracking a toddler’s weight and fussy eating
What to look for in an app for a fussy or underweight toddler, how VitaBaby tracks weight and erratic eating, and how to turn it into a clear summary for your GP or health visitor.
What is faltering growth in babies?
A plain-English UK explanation of faltering growth (sometimes called failure to thrive): what centile crossing means, how it is assessed, common causes, and what happens next.
Reflux and slow weight gain in babies
How reflux can affect a baby’s weight gain, the difference between ordinary reflux and reflux that needs help, how it compares with cow’s milk allergy, and when to see your GP.
Combination feeding and baby weight gain
How combining breast and bottle (mixed feeding) can support weight gain in a slow-gaining baby, how to do it while protecting your milk supply, and when to ask for feeding support.
Tracking a premature baby’s weight using corrected age
Why premature babies are tracked using corrected (adjusted) age, how to work it out, which UK growth charts are used, and what catch-up growth looks like.
Is my newborn feeding enough? A guide for first-time parents
How first-time parents can tell if a newborn is feeding enough: wet and dirty nappies, feeding frequency, weight trend, and the signs that mean you should call your health visitor or GP.
How much milk should a newborn drink?
A first-time parent’s guide to how much milk a newborn needs: feeding on demand, rough formula amounts by weight (ml and oz), how this changes week by week, and when to call your health visitor or pediatrician.
When do babies regain their birth weight?
Why newborns lose weight in the first days, how much loss is normal, when most babies are back to their birth weight, and the signs that mean you should call your health visitor or pediatrician.
Slow weight gain FAQs
My baby isn’t gaining weight — what should I do?
First, look at the trend rather than a single weigh-in: is your baby following their own centile, or crossing downward through centile spaces (percentiles, in US terms)? Keep a clear record of feeds and weigh-ins, offer responsive feeds and calorie-dense first foods once weaning, and share the record with your health visitor, GP, or pediatrician. Sustained slow gain or a downward centile crossing should always be reviewed by a professional.
What is the best app for an underweight or slow-gaining baby?
Look for an app that charts the weight trend clearly, links feeds and calories to that trend, and produces a summary you can share at appointments. VitaBaby is built for exactly this: two-tap feed and weigh-in logging, growth plotted against age-appropriate bands, daily calorie and nutrition breakdowns, calorie-dense recipe ideas, and a clinician-ready summary — from newborn to age 12.
What counts as faltering growth (failure to thrive)?
Faltering growth describes slower-than-expected weight gain in infancy or childhood — often a sustained drop across one or more centile spaces. It is a pattern to investigate, not a diagnosis in itself. The cause is often feeding-related and responds well to early support, which is why tracking the trend and seeking advice early matters.
When should I see a health visitor, GP, or pediatrician?
Seek advice if your baby is consistently losing weight, has crossed downward through two or more centile spaces, is feeding poorly, has not regained birth weight by around two weeks, or you are simply worried. A tracker supports the conversation — it never replaces professional assessment.