Comparison

Kalma vs Contraction Timer

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

Head to head
About

Kalma

Features
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KALMA es tu compañera de embarazo, semana a semana, desde el primer test positivo hasta el día que tengas a tu bebé en brazos. Todo lo que necesitas en una sola app, hecha para vivir esta etapa con calma y compartirla con quien más quieres. SEGUIMIENTO SEMANAL Cada semana, descubre cómo crece tu bebé: su tamaño, su desarrollo y los cambios que notas en tu cuerpo. Información clara y cercana para que nunca te pierdas nada. TIMER DE CONTRACCIONES · GRATIS Cronometra la frecuencia y la duración de tus contracciones en tiempo real, sin pagar nada. Sabrás cuándo es el momento de ir al hospital y podrás compartirlo con tu pareja al instante. CONTADOR DE PATADAS Registra los movimientos de tu bebé desde la semana 28, detecta sus patrones y guarda esos primeros "hola" que no se olvidan. DIARIO DE EMBARAZO Guarda las fotos de tus ecografías y los momentos que quieres recordar siempre. Tu embarazo, contado a tu manera. BOLSA DEL HOSPITAL Un checklist completo y personalizable para que no te dejes nada el gran día. Sincronizado con tu pareja para llegar con todo listo. PLAN DE PARTO Crea y guarda tus preferencias para el parto y compártelas fácilmente con tu equipo médico. RESPIRACIÓN GUIADA Técnicas de respiración con animaciones que te acompañan durante el trabajo de parto para ayudarte a mantener la calma. CALENDARIO DE CITAS Todas tus visitas al ginecólogo y tus ecografías organizadas en un mismo lugar. REGISTRO DE PESO Y TENSIÓN Lleva el seguimiento de tu evolución durante todo el embarazo de un vistazo. VIVIDLO EN PAREJA Comparte contracciones, contador de patadas y diario en tiempo real. Aunque estéis separados, lo vivís juntos. KALMA no sustituye el consejo médico. Ante cualquier duda, consulta siempre con tu ginecólogo o matrona. Términos de uso (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Política de privacidad: https://kalmaapp.pro/privacidad/

About

Contraction Timer

Features
Read full description

Time contractions with one tap — and know when it may really be time to go. TWO TAPS, NOTHING ELSE Tap the big circle when a contraction begins, tap again when it eases. Durations, intervals and your hourly pattern are worked out for you — no forms, no clutter, designed for one hand in the middle of the night. THE 5-1-1 RULE, WATCHED FOR YOU The guideline midwives give for heading to the hospital: contractions about every 5 minutes, lasting about 1 minute, for about 1 hour. The app quietly watches your pattern and tells you when it matches — with a notification even if your phone is locked. Prefer the stricter 4-1-1 rule? One switch in Settings. KEEPS GOING ON THE LOCK SCREEN A Live Activity shows the running contraction on the Lock Screen and in the Dynamic Island — you can end it right there, without unlocking. BUILT FOR REAL LABOR • A big, calm timing button you can't miss • "Since last contraction" always in view • Edit or discard any contraction afterwards • Practice runs (Braxton Hicks) — time them, mark them, keep them separate • Sessions wrap up gently when things go quiet SHARE WITH YOUR MIDWIFE OR DOCTOR Send a session summary as text the moment it ends, or export CSV. Pro adds a clean, printable PDF report for your care team. YOUR DATA STAYS YOURS Everything is stored on your iPhone only. No account, no ads, no tracking — nothing ever leaves your device. PRO One simple upgrade — as a one-time purchase or a yearly subscription — unlocks your full history, the PDF report and pattern insights. Timing, the 5-1-1 alert and text sharing are free forever. Contraction Timer records the times you enter by hand. It is not a medical device — always follow the advice of your midwife, doctor or hospital. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://soufianechalouh.github.io/contraction-timer/privacy

Screenshots

Kalma4 screens
Contraction Timer4 screens

Verdict

The call

Kalma and Contraction Timer are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support 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. Kalma sells 2 in-app purchases, starting at $3.99 per month and Contraction Timer sells 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Kalma versus Contraction Timer: the parameters behind the verdict, then further details
ParameterKalmaContraction Timer
PriceFreeFree
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesYes
DevicesiPhoneiPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size65 MB2 MB
Age rating4++12
DeveloperCARLOS GARCIAsoufiane Chalouh

In-app purchases

2 purchases

Kalma

Subscriptions1
  • Kalma + mensuel$3.991 Month
One-time1
  • Kalma+ todo el embarazo$24.99
2 purchases

Contraction Timer

Subscriptions1
  • Pro Yearly$9.991 Year
One-time1
  • Pro — Lifetime$19.99

Questions

Is Kalma free?
Kalma is free to download, with in-app purchases available.
Is Contraction Timer free?
Contraction Timer is free to download, with in-app purchases available.
Do Kalma or Contraction Timer have ads?
Neither Kalma nor Contraction Timer shows ads.

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