# Kick Counting With Twins: Why Per-Baby Counts Don't Work _You cannot reliably tell which twin just moved — so you track one pattern for both babies, and you report a change just as fast._ - Source: https://proba.baby/en/blog/kick-counting-with-twins - Published: 2026-09-05 - Author: ProbaBaby Team - Category: Twins & Multiples - Tags: twins, multiples, third-trimester, safety - Language: English > Counting each twin separately sounds more careful, but maternal perception cannot reliably tell twins apart, and one baby's movement can push the other. Here is what to track instead, when to start, and why reduced movement is still an immediate call. > **Medical disclaimer.** This article is general information about fetal movement in twin pregnancy and does not replace medical advice. If either baby is moving less than usual, if the overall pattern has changed, or if you cannot feel movement at all, contact your midwife, maternity unit, or provider immediately — day or night. Do not wait for your next appointment and do not wait until morning. Kick counting with twins works, but not the way most people assume. You track one overall movement pattern for both babies, not two separate tallies. The reason is not laziness or a missing app feature: you cannot reliably tell which twin just moved, and a confident wrong guess is more dangerous than no guess at all, because it can hide the baby who has gone quiet. That leaves twin parents with a real method, just a different one. Here is why attribution fails, what the guidelines actually cover, what to track instead, when to start, and why reduced movement in a twin pregnancy is still a phone call you make now rather than tomorrow. ## Why you cannot tell which twin is kicking The most-cited evidence on this is a review of fetal behaviour in twin pregnancy published in *Twin Research and Human Genetics* in 2013. Its conclusion on measurement methods is blunt: **"actocardiograph and maternal perception of fetal movements cannot reliably be used for fetal movement observations in twin studies."** The reason is more interesting than "two babies are confusing." Movements in a twin pregnancy come in three kinds — spontaneous, evoked, and **passive**, meaning one baby was moved by the other. From the outside, a passive movement feels exactly like a real one. What separates them, the review says, is ultrasound: it calls ultrasound observation "the most accurate means to analyze fetal activity, as an experienced observer is able to differentiate between spontaneous, evoked, and passive movements of twins." A hand on a belly is not an experienced observer with a probe. So the twin who has gone quiet can still generate movement you feel, because their sibling is nudging them. Splitting your session into "Baby A: 6, Baby B: 4" does not just risk being wrong. It manufactures reassurance about the exact baby you most need to be uncertain about. Position does not rescue this either. You may know that one baby has been lying low and left for weeks, but limbs cross the midline, babies rotate, and a kick felt on one side is not a signature. ## The guideline everyone quotes was written for one baby The UK reduced-movement pathway comes from [RCOG Green-top Guideline No. 57](https://www.rcog.org.uk/guidance/browse-all-guidance/green-top-guidelines/reduced-fetal-movements-green-top-guideline-no-57/), now in its second edition and last reviewed on 29 April 2026. Its stated purpose is "to advise clinicians, based on the best evidence where available, on the care of women presenting with reduced fetal movements during pregnancy." It is the backbone of what happens when you go in — and its evidence base and thresholds come from singleton work. The RCOG's patient leaflet on movements does not address twin pregnancy at all. And [NICE NG137](https://www.ncbi.nlm.nih.gov/books/NBK546070/), the guideline that covers twin and triplet pregnancy in detail — scan cadence, chorionicity, planned birth timing — makes no recommendation for routine movement counting in twins. That absence is the honest headline of this whole topic. **No guideline sets a movement threshold for twins, and none tells you to split a count between them.** Where you meet a per-baby target, it is a product decision or somebody's rule of thumb, not guidance. It is worth remembering how weak the ground is even for one baby. The RCOG says there is no specific number of movements that is considered normal, and that there is not enough evidence to recommend the routine use of a movement chart. Our guide to [normal kick count patterns](/blog/normal-kick-count-patterns) goes through what the trial evidence does and does not support. If a universal number is unavailable for singletons, a per-baby number for twins is fantasy. ## What to track instead: one pattern, both babies The method that survives is the one that was always doing the work — **your own baseline**. - **Pick a consistent time.** Choose a part of the day when you usually feel a lot of movement, and use roughly the same window each day. - **Count everything, from either baby.** Kicks, rolls, jabs, swishes. You are not sorting them. - **Time how long the session takes.** The count-to-10 approach still works; you are timing how long ten movements take in total, then comparing that with your own previous sessions. - **Record the whole, not the halves.** One number per session, not two. - **Write down impressions as well as numbers.** "Quieter than usual on the left today" is useful to your team even when you cannot prove it. That last point matters. Refusing to attribute movements is not the same as ignoring your instincts. If it feels like one baby has been quieter, say so when you call. You are not expected to be right — you are expected to report, and the people with a probe are expected to check. ## When to start with twins: 26 weeks, not 28 [Count the Kicks](https://countthekicks.org/faq/), the nonprofit stillbirth-prevention programme run by Healthy Birth Day, Inc., gives twin parents a different starting point from singleton parents (FAQ checked 5 September 2026): *"If you're expecting twins or multiples, the recommendation is to start counting daily at 26 weeks."* The logic follows the biology. Twins arrive earlier — NICE NG137 tells clinicians to explain that about 60 in 100 twin pregnancies result in spontaneous birth before 37 weeks, and planned birth is offered at 37 weeks for an uncomplicated pregnancy where each baby has its own placenta. If the useful window closes earlier, it has to open earlier. Our [twin pregnancy week by week](/blog/twin-pregnancy-week-by-week) guide covers what else shifts forward in the same stretch. Credit where it belongs: Count the Kicks' free app *does* track babies individually — as of 5 September 2026 its FAQ says the app asks how many babies you are counting for and lets you add each baby's name. If a tool that separates them is what you want, that is the one to use, and it costs nothing. This article is not an argument that the feature is impossible to build. It is an argument that the number it produces cannot mean what you would want it to mean. ## Reduced movement is still an immediate call Nothing about carrying two babies softens this. **If the overall pattern has dropped, or you cannot feel movement, contact your midwife or maternity unit immediately.** The NHS is explicit: do not wait until the next day, even if it is the middle of the night. The RCOG's advice is the same — always seek professional help immediately, and never go to sleep ignoring a reduction or change in movements. Twin-specific advice points the same way. The RCOG's [multiple pregnancy leaflet](https://www.rcog.org.uk/for-the-public/browse-our-patient-information/multiple-pregnancy-having-more-than-one-baby/) lists "change in the babies' movements" among the things you should contact a healthcare professional about immediately, alongside sudden abdominal pain or swelling and sudden breathlessness. Two things not to do while you decide: - **Do not spend time trying to provoke movement.** Cold drinks and sugar are a delay, not a test. Neither the NHS movement page nor the RCOG one asks you to try anything before calling; both say to call immediately. - **Do not reach for a home doppler.** The NHS says it is not a reliable way to check your baby's health, and the RCOG says not to rely on home heartbeat kits. With two babies the trap is worse: you have no way of knowing whose heartbeat you found, so the reassurance is not just unreliable, it is potentially about the wrong baby. Going in more than once is not a nuisance. It is the system working. ## What twin pregnancy adds — and who does the attribution There is a reason twin pregnancy is watched more closely. The RCOG's multiple pregnancy leaflet puts it directly: "Having a multiple pregnancy increases the chance that your placenta may not work as well as it should. This can affect the babies' growth and wellbeing during the pregnancy." That is why extra scans exist. Where each baby has its own placenta, scans are offered at least every four weeks from 24 weeks; where the babies share one, at least every two weeks from 16 weeks. [Which type you have](/blog/chorionicity-di-di-mo-di-mo-mo-twins) is established at the 11–14 week scan and shapes the whole schedule. Read those two facts together and the division of labour becomes clear. **Per-baby monitoring is real, and it is done with ultrasound, cardiotocography and a trained observer — not with your hand on your belly.** Your job is the pattern and the phone call. The scans do the part that counting cannot. ## How ProbaBaby helps ProbaBaby's [pregnancy tracking](/pregnancy-tracking) module keeps its kick counter in the Track tab. There is a default target of 10 movements that you can set anywhere from 5 to 20, a Live Activity so a session stays visible without the app open, a Lock Screen widget, and a per-day history calendar — which is what turns single sessions into the baseline this article is about. The counter cites ACOG Practice Bulletin No. 145 and Count the Kicks on screen. When your profile says twins, the counter shows a note explaining that you should track your babies' overall movement pattern together, because telling which baby moved isn't reliable, so counts aren't kept per baby — and that you should contact your care team if the usual pattern changes. The same note is mirrored on the Apple Watch. Elsewhere in the app, a declared twin pregnancy adds a twin target to the timeline: 37+0 with a 34+0–38+6 window where the babies have separate placentas or chorionicity isn't recorded, and earlier where they share one. The medical 40-week due date stays exactly where it is — the twin view is added alongside it, never in place of it. What the app will not do is invent a number. It keeps no separate tally per baby and raises no flags about differences between them, because [for twins](/twins) those are questions for a scan, not for a counter. ## FAQ **Can you count kicks separately for each twin?** Not reliably. A 2013 review in Twin Research and Human Genetics concluded that maternal perception of fetal movements cannot reliably be used for movement observation in twin studies, partly because one baby's movement can passively push the other. Track the overall pattern for both babies instead. **When should I start counting movements in a twin pregnancy?** Count the Kicks advises starting daily counting sessions at 26 weeks if you are expecting twins or multiples, rather than at the start of the third trimester as it advises for one baby. Twins are born earlier, so the window in which counting is useful opens earlier too. **What if one twin feels quieter than the other?** Report it. You are not expected to work out which baby it was or whether your impression is correct — that is what monitoring and a scan are for. The RCOG's multiple pregnancy leaflet lists a change in the babies' movements among the things you should contact your healthcare professional about immediately. **Is there a normal number of movements for twins?** No. The RCOG says plainly that there is no specific number of movements that is considered normal, and no guideline sets a separate threshold for twins. What matters is whether the overall amount of movement matches what is usual for your pregnancy. **Do twins move less near the end because there is less room?** You should not accept a drop in movement as normal at any stage. The RCOG says the number of movements tends to increase until 32 weeks and then stay about the same, and that you should keep feeling movement right up to and during labour. The type of movement may change; the amount going down is a reason to call. **Should I use a home doppler to check both babies?** No. The NHS says a home doppler is not a reliable way to check your baby's health, and the RCOG says not to rely on home heartbeat kits. With two babies you also have no way of knowing whose heartbeat you found, which makes false reassurance easier, not harder. **Does ProbaBaby keep a separate movement count for each twin?** No, and that is deliberate. When your profile says twins, the kick counter shows a note explaining that you should track your babies' overall movement pattern together because telling which baby moved isn't reliable, so counts aren't kept per baby. If you want a tool that does track each baby, the free Count the Kicks app does it properly — its FAQ, checked 5 September 2026, says it asks how many babies you are counting for and lets you name each one. ## Sources - RCOG patient information — Your baby's movements in pregnancy — No specific number of movements is considered normal; movements increase to 32 weeks then stay about the same; never go to sleep ignoring a reduction or change; do not rely on home heartbeat kits; not enough evidence to recommend the routine use of a movement chart. The leaflet does not address twin pregnancy: https://www.rcog.org.uk/for-the-public/browse-our-patient-information/your-babys-movements-in-pregnancy/ - RCOG Green-top Guideline No. 57 — Reduced Fetal Movements — Second edition, last reviewed 29 April 2026. Purpose: 'to advise clinicians, based on the best evidence where available, on the care of women presenting with reduced fetal movements during pregnancy' — the guideline behind the UK reduced-movement pathway: https://www.rcog.org.uk/guidance/browse-all-guidance/green-top-guidelines/reduced-fetal-movements-green-top-guideline-no-57/ - NHS — Your baby's movements — Movements start between 16 and 24 weeks; no set number each day; call the midwife or maternity unit immediately and do not wait until the next day, even in the middle of the night; do not use a home doppler: https://www.nhs.uk/pregnancy/keeping-well/your-babys-movements/ - Tendais I, Visser GHA, Figueiredo B, Montenegro N, Mulder EJH. Fetal behavior and heart rate in twin pregnancy: a review. Twin Res Hum Genet 2013;16(2):619–628 — DOI 10.1017/thg.2012.149 — 'actocardiograph and maternal perception of fetal movements cannot reliably be used for fetal movement observations in twin studies'; ultrasound observation is 'the most accurate means to analyze fetal activity, as an experienced observer is able to differentiate between spontaneous, evoked, and passive movements of twins': https://www.cambridge.org/core/journals/twin-research-and-human-genetics/article/fetal-behavior-and-heart-rate-in-twin-pregnancy-a-review/E06141069417032425BC0B7DB5785844 - RCOG patient information — Multiple pregnancy: having more than one baby — September 2021, reviewed 2023 — contact your healthcare professional immediately for a change in the babies' movements; a multiple pregnancy increases the chance the placenta may not work as well as it should; scans at least every 4 weeks from 24 weeks for DCDA, at least every 2 weeks from 16 weeks for MCDA or MCMA: https://www.rcog.org.uk/for-the-public/browse-our-patient-information/multiple-pregnancy-having-more-than-one-baby/ - NICE guideline NG137 — Twin and triplet pregnancy (NICE, London; Bookshelf record dated 9 April 2024) — 'Explain to women with a twin pregnancy that about 60 in 100 twin pregnancies result in spontaneous birth before 37 weeks'; offer planned birth at 37 weeks for an uncomplicated dichorionic diamniotic twin pregnancy, 36 weeks for monochorionic diamniotic, 32+0-33+6 for monochorionic monoamniotic, 35 weeks for triplets. Contains no recommendation for routine fetal movement counting in twin pregnancy: https://www.ncbi.nlm.nih.gov/books/NBK546070/ - Count the Kicks — Frequently asked questions — 'If you're expecting twins or multiples, the recommendation is to start counting daily at 26 weeks'; for one baby, 'begin counting in the third trimester, which is at 28 weeks'. The free app 'will ask how many babies you are counting for', then you 'add your babies' names/nicknames': https://countthekicks.org/faq/ - Count the Kicks — About us (Healthy Birth Day, Inc.) — 'Count the Kicks was created by Healthy Birth Day, Inc., a 501(c)(3) nonprofit organization dedicated to the prevention of stillbirth through education, advocacy and research': https://countthekicks.org/about-us/ --- ProbaBaby (listed on the App Store as “Pregnancy & Baby Tracker - PB”) is a free iPhone, iPad and Apple Watch app for pregnancy, newborn and postpartum tracking, built for twins, in 32 in-app languages, with an optional AI baby-face prediction that computes Mendelian genetics (Punnett squares) from the traits you enter before any image is generated. Tracking, tools, PDF reports and family sharing are free; only AI predictions use credits — 5 starter credits cover your first Scientific prediction — and no subscription is required. Requires iOS 26 or later. Not available on Android.