Can I Avoid Conception Using Daysy?

This is one of the most common questions we receive. And it’s an important one.

The short answer is: yes, it is possible to avoid conception using Daysy, when it is used correctly, consistently, and with a clear understanding of fertility. The longer answer is more nuanced because Daysy is not a contraceptive in the conventional sense, but a fertility awareness tool.

To understand what that means, we need to talk about physiology.

Avoiding Conception Begins with Ovulation Awareness

Pregnancy can only occur if sperm are present in the fertile window around ovulation. Outside of this window, conception is biologically impossible.

Daysy is designed to help identify:

• When ovulation has not yet occurred
• When the fertile window is open
• When ovulation has already passed and fertility has ended for the cycle

It does this by measuring basal body temperature each morning and detecting the progesterone-driven temperature rise that follows ovulation. Daysy determines your fertile and infertile phase using an extensive database and proprietary algorithm. Based on five million menstrual cycles and an algorithm that draws on knowledge from more than 30 years of research, including several studies, Daysy can give you reliable information about your menstrual cycle.

This allows ovulation to be confirmed, not guessed.

Avoiding conception with Daysy therefore depends on correctly following Daysy indication of fertile and non-fertile days and acting accordingly.

What Daysy Does — and What It Doesn’t Do

What Daysy does do:

• Identifies fertile and non-fertile days based on physiological data and its unique algorithm
• Adapts to cycle variability rather than assuming regularity
• Confirms when ovulation has already occurred
• Provides clear daily guidance using colour signals

What Daysy does not do:

• Suppress ovulation
• Override fertility
• Protect against pregnancy during fertile days
• Act as a barrier or hormonal contraceptive

Daysy works with your fertility — not against it.

How Conception Can be Avoided Using Daysy

Avoiding conception with Daysy relies on behavioural choices during fertile days.

When Daysy indicates fertility (red days), users may choose to:

• Abstain from penetrative sex
• Use barrier methods such as condoms and diaphragm
• Combine Daysy with another fertility awareness practice

When Daysy indicates non-fertility (green days), the risk of conception is extremely low because ovulation has already passed.

This is why Daysy is best understood as a decision-support tool.

Effectiveness: What Matters Most

The effectiveness of avoiding conception with Daysy depends on:

• Daily, consistent temperature measurement (the more you measure, the more the computer learns your rhythm)
• Following the fertility signals correctly and understanding that Daysy calculates your fertile window
• Willingness to adapt behaviour during fertile phases

Like all fertility awareness methods, Daysy requires:

• Respect for the body’s variability

It is not a “set and forget” solution but for many women, that is precisely its appeal.

Who Might Choose Daysy to Avoid Conception?

Daysy may be a good fit if you:

• Want a way of managing your fertility that works with your natural hormones
• Are open to learning your cycle
• Are comfortable adjusting behaviour during fertile days
• Want to build long-term cycle literacy

Daysy may not be the right choice if you:

• Want protection without daily involvement
• Are unable to accommodate fertile-day adjustments
• Prefer methods that suppress ovulation entirely (see here why ovulation is important)

A Note on Trust and Responsibility

Avoiding conception with Daysy is not about control. It’s about relationship.

A relationship with:

• Ovulation as the main event of the cycle
• The fertile window as a meaningful phase, not an inconvenience
• The body as intelligent, responsive, and worth listening to

For many users, this shift in perspective is as significant as the practical outcome itself.

Final Thoughts from Period Wisdom Boutique

Yes. It is possible to avoid conception using Daysy. But it works best when approached with understanding, commitment, and respect for fertility rather than fear of it.

Daysy does not promise perfection. What it offers is clarity — and from clarity, informed choice becomes possible.

If you’re curious whether Daysy suits your life and intentions, we’re always happy to help you and have a chat with you.