Comparison

Contraction Timer by Nestling vs Cubby Baby Tracker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Contraction Timer by Nestling

Effortlessly track labor contractions with a simple one-tap interface. Monitor duration, gaps, and intensity, with automatic 5-1-1 pattern awareness. Integrates with Apple Health and syncs via iCloud.

Highlights
  • One-tap start/stop
  • Apple Watch app
  • Lock Screen Live Activity
  • Siri integration
  • Automatic duration, gap, and median tracking
  • 5-1-1 timing pattern awareness
  • Intensity logging
Features
Read full description

Contraction Timer by Nestling is the labor timer built for the moment your bandwidth is lowest. One tap to start, one to stop — on your iPhone, your Lock Screen, or your wrist. We handle the math, the gaps, and the durations so you can focus on labor. Completely free — no paywall, no ads, no subscription. • Live Activity + Lock Screen — glance at the timer without unlocking • Ask Siri to start a contraction — completely hands-free timing • Huge one-tap buttons designed for active labor, not fiddly menus KNOW WHERE YOU ARE • Automatic duration, gap, and median tracking for every contraction • 5-1-1 timing-pattern awareness — get a clear, calm note when your contractions are about 5 minutes apart, lasting about 1 minute, for about an hour • Intensity logging with a single tap after each contraction • Session history — review your durations and patterns WHEN YOUR BABY ARRIVES • Continue into Nestling, the calm baby tracker, so your story keeps going from your last contraction to your baby’s first feeding: feeds, sleep, diapers, and growth in one place YOUR DATA STAYS YOURS • No account required. No ads. No subscription. Your timing data is never sold. IMPORTANT Contraction Timer by Nestling is a timing tool, not a medical device. It does not diagnose, detect, or predict labor, and it does not detect emergencies or provide medical advice. Timing patterns such as 5-1-1 are informational only — only your healthcare provider can tell you when to seek care. In any emergency, call your provider or local emergency services immediately. From the makers of Nestling, the calm baby tracker. When baby arrives, your story continues there.

About

Cubby Baby Tracker

Features
Read full description

Cubby is the baby tracker for the 3am version of you. Every other tracker is bright, pastel and built for daylight. Cubby is dark by default, because the job happens in a blacked-out nursery with one hand free. No account. No sign-up. No email. No ads. Open it, log the feed, and go back to bed. ONE DIAL FOR THE WHOLE DAY Cubby draws your baby's day as a 24-hour clock. Sleep shows as arcs, feeds as spokes, changes as pips on the rim. One look tells you what kind of night that was — something no list of rows has ever managed. IT LEARNS WHEN THE NAP IS COMING Cubby measures your baby's actual wake windows and tells you when the next nap is likely, with an honest window rather than false precision. Until there's enough history it falls back to age guidance and says so. Most trackers put nap prediction behind a monthly plan; Cubby has no subscription at all. IT ALSO LEARNS THE FEEDS Next feed predicted from the median gap between recent feeds. FAST WHEN YOU'RE WRECKED • One tap starts and stops the sleep timer • Two taps log a bottle, a nursing session or a diaper • Big targets, tabular numerals, no hunting TRACK EVERYTHING THAT MATTERS Bottles, nursing timers per side, solids, sleep, diapers, pumping, weight, length, head circumference, temperature and medicines. MILESTONES AND SHOTS CDC milestone checklists by age and the routine childhood immunisation schedule, ticked off as you go. Most trackers skip both entirely. REAL WHO GROWTH CENTILES Weight, length and head plotted against the actual WHO Child Growth Standards — 3rd to 97th centile bands with the median through the middle, and your baby's centile named beside each reading. Built from WHO's own published tables, not an approximation. TWINS WELCOME Each baby gets their own log; switch with a tap. REMINDERS, ON DEVICE Optional nudges when a feed is likely due or the nap window opens. Scheduled on your iPhone — no push server involved. BUILT BY ONE PERSON I built Cubby in a year when AI finally made something like this achievable alone — then kept building whatever parents asked for. No team, no investors, and no roadmap written by anyone but the people using it. And no subscription: logging your own baby's nights shouldn't cost a monthly fee. YOUR LOG STAYS YOURS Every feed, sleep and diaper you log stays on your iPhone — export the whole log whenever your pediatrician asks. No tracking of you across other companies' apps or websites, and nothing shared with data brokers. TELL ME WHAT TO BUILD See something in another baby tracker that you wish this one had? Email mark@vibecode.review. I read every message and I build what people actually ask for — that is how most of this app got here. Cubby describes what you logged and estimates from your own data. It is not medical advice. Growth centiles come from the WHO Child Growth Standards and are there for context, not diagnosis — always talk to your pediatrician about anything that worries you.

Screenshots

Contraction Timer by Nestling4 screens
Cubby Baby Tracker4 screens

Verdict

The call

Contraction Timer by Nestling and Cubby Baby Tracker are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Contraction Timer by Nestling sells 1 one-off in-app purchase and Cubby Baby Tracker sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

ScorecardNo meaningful differences
Contraction Timer by Nestling versus Cubby Baby Tracker: the parameters behind the verdict, then further details
ParameterContraction Timer by NestlingCubby Baby Tracker
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree—
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS17.016.4 — better
Further details — not scored
Size75 MB54 MB
Age rating+124+
DeveloperTyrian HortonMeng-Yi Hsu

In-app purchases

1 purchases

Contraction Timer by Nestling

One-time1
  • Forever Unlock$4.99
3 purchases

Cubby Baby Tracker

One-time3
  • Unlock All Apps I Built$5.99
  • Unlock Cubby$9.99
  • Unlock Cubby$12.99

Questions

Is Contraction Timer by Nestling free?
Contraction Timer by Nestling is free to download, with in-app purchases available.
Is Cubby Baby Tracker free?
Cubby Baby Tracker is free to download, with in-app purchases available.
Do Contraction Timer by Nestling or Cubby Baby Tracker have ads?
Neither Contraction Timer by Nestling nor Cubby Baby Tracker shows ads.
Which is updated more often, Contraction Timer by Nestling or Cubby Baby Tracker?
Contraction Timer by Nestling ships an update every 4 days, and Cubby Baby Tracker every 4 days. Most recently, Contraction Timer by Nestling was updated on October 24, 2026 and Cubby Baby Tracker on October 25, 2026.

Other comparisons