---
title: "Trying to conceive: when do you switch from a cycle app to a pregnancy app?"
description: "Short answer: preferably never. The moment you switch is exactly when your cycle data is worth the most. What you lose, what you need, and how it fits in one app."
url: https://myperiod.app/en/blog/van-cyclus-app-naar-zwangerschapsapp-wanneer-overstappen
lang: en
date: 2026-09-07
publisher: PERIOD. B.V., Amsterdam
---

[Back to blog](https://myperiod.app/blog) [Your cycle](https://myperiod.app/blog/categorie/cyclus) · 5 min read

# Trying to conceive: when do you switch from a cycle app to a pregnancy app?

[Lees dit artikel in het Nederlands](https://myperiod.app/blog/van-cyclus-app-naar-zwangerschapsapp-wanneer-overstappen)

PERIOD. team · September 7, 2026

**Short answer:** you do not have to switch, and it is better not to. The moment most women go from a cycle app to a pregnancy app is exactly when their cycle data is worth the most: for calculating the due date, for the first weeks, and later for recovery. Whoever switches starts with an empty app.

## The three moments people usually switch

- **When you start trying.** You want more than a period prediction: you want to know which days matter.

- **At a positive test.** The cycle app does not know what to do and keeps predicting periods.

- **After birth.** The pregnancy app is done, the cycle is not back, and nobody tells you honestly when it will be.

## What you lose with every switch

Your cycle length over the past months, your average, your variation, your temperature curves, your symptoms. Exactly what a midwife or doctor wants to see when the due date is set or when something is irregular.

## What you need while trying

Not day 14 from a textbook. Ovulation falls somewhere between day 11 and day 21 in a normal cycle, wider in an irregular one. What works is three signals side by side: basal temperature, ovulation tests and cervical mucus.

## What you need when pregnant

No more period predictions. Instead: per week what happens to the baby and to your body, in plain language. Reporting bleeding instead of logging "flow". And an assistant that knows which week you are in.

## What you need after birth

Honesty. Your cycle returns between six weeks and more than a year after birth, depending among other things on breastfeeding. An app that predicts a period on day 28 after birth pretends to know something it does not.

## How we solved it

In PERIOD. you choose in your profile where you are: cycle, trying, pregnant, or after birth. The app adapts, your data stays. That is [PERIOD. baby](https://myperiod.app/baby-en): 7.99 per month or 69.99 per year, everything in plus included, 14 days free first. Tracking your cycle stays free alongside it.

*PERIOD. is not a medical device. For questions about your pregnancy or fertility, talk to your GP, midwife or gynaecologist.*

Want to understand your cycle better?

## Keep reading

[Best app for period and ovulation tracking (2026)Tracking your period and ovulation in one app: what an app can and cannot know, which measurements really help, and how Flo, Clue, Natural Cycles and PERIOD. approach it.Read more](https://myperiod.app/blog/best-app-period-and-ovulation-tracking)[Cycle app on the pill: is tracking still worth it when you use contraception?Short answer: yes, but for a different reason than you think. On the pill you do not predict ovulation, but you do track complaints, bleeding and what happens when you stop.Read more](https://myperiod.app/en/blog/cyclus-app-met-de-pil-heeft-het-zin)[Flair (Belgium) features PERIOD.: on the luteal phase and cycle appsBelgian magazine Flair spoke with our founder Lisa Volkers about PERIOD. the luteal phase, and why a privacy-first cycle app was needed.Read more](https://myperiod.app/en/blog/flair-belgie-period-luteale-fase)