BeTaller vs Contraction Timer
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
BeTaller
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How much taller will your child grow? BeTaller answers with numbers. We sell no milk and no supplements. FOR PARENTS Enter your child's age, height and weight and both parents' heights. In two minutes you get: โข Your child's predicted adult-height range โข Where your child stands among Vietnamese children of the same age and sex โข What to watch this year, and when a doctor's visit is worth it No bone-age X-ray needed. HOW THE PREDICTION WORKS BeTaller blends three published methods: Khamis-Roche (Pediatrics, 1994), Vietnamese population height data from the NCD Risk Factor Collaboration (The Lancet, 2020) and mid-parental (Tanner) height. Khamis-Roche was built on a Western population and runs high for Vietnamese children, so we limit its weight and anchor the result to Vietnamese data. Every source is listed in the app, linked to the original paper. UNLOCK ONCE, KEEP IT UNTIL THEY ARE GROWN โข The exact figure and your child's growth curve to 18 โข An age-right sleep, food and exercise plan, 10 minutes a day, built with a registered physiotherapist practising in Canada โข A monthly check: is your child still on track? โข AI meal scanner: photograph a meal and see what protein, calcium and vitamin D3 are missing, Vietnamese dishes included โข Reminders for parents, in Vietnamese and English EACH YEAR OF GROWTH COMES ONCE Once growth plates close, no method lengthens bone. BeTaller helps you make the most of the years your child is still growing: enough sleep, the right food, regular movement, and an early signal when something looks off. TEENS CAN USE IT TOO If your 12 to 18 year old installs it themselves, the app speaks to them in their own voice: a daily Growth Score, a bamboo shoot that grows, 17 badges. They can send their result to you with one tap. VIETNAMESE AND ENGLISH Vietnamese by default, full English, for Vietnamese families everywhere. โ Note: BeTaller is not a medical device and does not diagnose, treat, cure or prevent any medical condition. It does not replace professional medical advice. Predictions are statistical estimates, not promises about height. Pricing: unlock once for US$14.99 (399,000โซ in Vietnam), yours forever, nothing renews. Or weekly at US$2.99 (79,000โซ), renewing automatically unless cancelled at least 24 hours before the current period ends. Payment is charged to your App Store account. Manage or cancel in Settings โ Apple ID โ Subscriptions. Terms of Use (EULA): https://betaller.app/terms Privacy Policy: https://betaller.app/privacy
Contraction Timer
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Birth Companion โ calm support for every contraction Birth can feel intense, emotional, and overwhelming. Birth Companion was designed to make one small part of it feel simpler. Track contractions with a single tap, see timing and intervals clearly, and keep your timer in sight right from the Lock Screen or Apple Watch. Use gentle breathing guidance to help find a steady rhythm, save how each wave felt, and look back on your contraction history whenever you want. Birth Companion includes: Simple contraction timing Duration and interval tracking Gentle breathing guidance Intensity, pressure, and support notes Personal contraction log Lock Screen timer Apple Watch support Shareable PDF summaries You can track your first 10 contractions for free. After that, continued access requires a weekly or monthly subscription. Created by a mother who has been through labor too, Birth Companion is made to feel calm, soft, and easy to use when you may not have the energy for anything complicated. For every wave, a little more clarity. For every moment, a little more support. Birth Companion is a comfort and tracking tool only. It does not provide medical advice, diagnosis, or medical monitoring. Always follow the guidance of your doctor, midwife, or care team. Terms of Use: https://birth-companion.pages.dev/terms-of-use
Screenshots
Verdict
The clearest difference is update cadence: BeTaller at every 5 days against Contraction Timer's every 2 months. BeTaller also leads on iOS requirement (16.4 vs 18.0). Contraction Timer's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. BeTaller sells 3 in-app purchases, starting at $2.99 per 7 days and Contraction Timer sells 2 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.
BeTaller ships an update every 5 days, Contraction Timer every 2 months. The most recent releases landed on October 31, 2026 and November 6, 2026 respectively.
| Parameter | BeTaller | Contraction Timer |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days โ better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, Apple Watch โ better |
| Requires iOS | 16.4 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 73 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Quang Nguyen | Yuliia Otmakhova |
In-app purchases
BeTaller
- Weekly$2.997 Days
- Yearly$34.991 Year
- Lifetime$14.99
Contraction Timer
- Weekly$4.997 Days
- Monthly$12.991 Month
Questions
Is BeTaller free?
Is Contraction Timer free?
Do BeTaller or Contraction Timer have ads?
Which is updated more often, BeTaller or Contraction Timer?
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