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Published by Floriva · Updated 2026-04-29 · How Floriva checks its guides

How to Switch from Natural Cycles to Floriva

Step-by-step guide to migrating from Natural Cycles to Floriva: what data to export, how to import cycle history, BBT setup, and the key contraceptive distinction to understand.

Switching from Natural Cycles to Floriva means moving from a server-backed app with FDA clearance for contraception to a local-first app without that clearance. Before deleting your Natural Cycles account, export your cycle history. Then enter key cycle start dates into Floriva and set up BBT logging using the same daily habit you already have. The important thing to understand: if you used Natural Cycles for contraception, Floriva does not replace that function. You are now responsible for FAM interpretation without algorithm support.

What You're Actually Switching

Natural Cycles and Floriva are different tools making different tradeoffs.

Natural Cycles is an FDA-cleared digital contraceptive. Its algorithm processes your BBT data using a large training dataset and outputs daily fertility status, red days (fertile) and green days (not fertile). That FDA clearance means the algorithm's contraceptive effectiveness has been reviewed against a clinical standard.

Floriva is a local-first charting app. It helps you log BBT readings and review patterns. It does not output daily fertility status or provide contraceptive guidance. If you're switching from Natural Cycles, you are moving from an algorithm that interprets your chart to a tool that shows you your chart and expects you to understand what you're looking at.

That distinction matters most if you're using FAM for contraception. If you're switching primarily for privacy reasons and you're comfortable with your own chart interpretation, the transition is straightforward.

Step 1: Export Your Data from Natural Cycles Before Anything Else

Do this before canceling your subscription and before deleting your account.

In Natural Cycles, navigate to Settings → Data & Privacy → Download My Data (the exact path may vary by app version, but it's typically in account or privacy settings). Request a data export. Natural Cycles will generate a file, typically a CSV, containing your cycle data.

Your export will include:

• BBT readings by date

• Period start and end dates

• Any LH strip results you logged

• Cycle statistics and history

Download this file and save it somewhere you control, a folder on your computer, a personal cloud drive, an external drive. Don't rely on the Natural Cycles export being accessible after you cancel your account.

If you have several years of Natural Cycles data, this export represents a meaningful health record. Keep it.

Step 2: Identify the Key Historical Data Points You'll Import

You will not manually enter every daily BBT reading from your Natural Cycles history into Floriva. For a user with two or three years of data, that would be thousands of entries. What you need is:

Period start dates: These are the foundation of cycle length calculations. Extract the last 12-24 months of period start dates from your exported CSV. These are the entries worth manually importing. They establish your cycle length history in Floriva.

Current luteal phase information: If you're mid-cycle when you switch, note your last confirmed ovulation date from Natural Cycles (if known) and your last period start date. These establish where you are right now.

Your average cycle length and luteal phase length: Note these from your Natural Cycles statistics. You'll use these as reference points as you establish a Floriva baseline.

You don't need to recreate your full BBT history. You're starting a new chart in Floriva from today (or your current cycle start), informed by your historical cycle length patterns.

Step 3: Enter Historical Period Dates in Floriva

Open Floriva and navigate to the period logging screen. Floriva accepts backdated entries. You can enter period start dates going back as far as you have records.

Working from your Natural Cycles export, enter your period start dates for the past 12-24 months. You can add period end dates as well if you recorded them, but start dates are the priority. They're what Floriva uses to calculate cycle length averages.

After entering 6-12 months of period start dates, Floriva will display your cycle length history and average. This gives you a baseline for phase estimation from the beginning, rather than starting from scratch with just one or two cycles.

This data entry takes 15-30 minutes for most users. You don't have to do it all at once.

Step 4: Set Up BBT Logging in Floriva

You already have the daily BBT habit from Natural Cycles. The mechanics are the same in Floriva. The only changes are the app interface and the absence of red/green day outputs.

In Floriva, enable BBT logging in your symptom and tracking settings. Add a daily reminder at the time you normally take your temperature.

The measurement protocol doesn't change:

• Take your temperature before getting out of bed

• After at least three consecutive hours of sleep

• At approximately the same time each day

• Use the same basal thermometer you used with Natural Cycles

Log your reading in Floriva immediately after taking it. The app will begin building your BBT chart from the first entry.

If you're switching mid-cycle, you can enter the BBT readings from earlier in the current cycle retroactively, check your Natural Cycles history for the current cycle's readings and enter them with their original dates into Floriva. This gives you a more complete chart for the current cycle rather than starting with a partial record.

Step 5: Understand What You're Losing from the Algorithm

Natural Cycles' value-add is the algorithm: it determines your individual cover line, adjusts for your specific temperature variation history, and provides an automated fertility status output. When you switch to Floriva, you take over that interpretation layer.

What you'll need to do yourself:

• Identify your cover line: The horizontal reference point above your pre-shift temperatures. In FAM practice, the cover line is typically set 0.1°F above the highest of the six temperatures immediately before the shift.

• Apply the three-day rule: Confirm ovulation after three consecutive temperatures above the cover line, all taken at the usual time without disruptions.

• Interpret the chart for your own purposes: Floriva shows you the data. You make the assessment of where ovulation occurred and what phase you're in.

If you've been using Natural Cycles long enough to have a solid understanding of what your biphasic chart looks like, this transition is likely manageable. If you used Natural Cycles primarily because it did the interpretation for you and you're less confident reading a chart directly, consider taking a Fertility Awareness Method course before relying on self-interpretation.

Step 6: Delete Your Natural Cycles Data and Account

Once you have your data exported, your key historical dates imported into Floriva, and your BBT tracking set up, you can proceed with Natural Cycles account deletion.

In Natural Cycles settings, navigate to account deletion (typically Settings → Account → Delete Account or similar). Natural Cycles should give you the option to delete your data as part of account closure. Confirm the deletion.

Under GDPR, Natural Cycles must delete your personal data upon request. Under California's CCPA and similar state laws, you also have deletion rights. If you're concerned about data retention, submit a formal deletion request rather than just canceling your subscription.

After deletion, Natural Cycles handles remaining records under its stated retention policies. In Floriva, core cycle records stay on your device; optional encrypted sync, backups, billing, and support records are separate.

The Key Difference: Local Storage Means No Server Records

The primary reason privacy-conscious users make this switch is the difference in where data lives.

Natural Cycles stores your BBT readings, cycle history, and fertility signals on its servers. Those servers are subject to Swedish and EU law, Natural Cycles' privacy policy, and the risks that come with any cloud-based health data service. That includes data breaches, privacy policy changes, and in the US, potential law enforcement requests served on a company that holds US user data.

In Floriva, core BBT readings, cycle history, ovulation notes, and luteal phase notes stay local-first. There is no equivalent readable central server accumulating your ongoing fertility data.

This changes the threat model in a specific way: an adverse legal environment, a data breach at the company level, or a change in business direction has less readable company-held cycle data to expose.

What This Means for You

Switching to Floriva is straightforward if you approach it as a chart transition rather than a full system migration. You keep the daily BBT habit, you import your period history, and you continue the same tracking practice with a local app instead of a server-backed one.

What changes is the interpretation layer. Floriva shows you the chart; you read it. If you're comfortable with that, the switch works. If you relied on Natural Cycles to make green-day/red-day determinations and you plan to use FAM for contraception, get formal FAM instruction before relying on self-interpretation.

Your data in Floriva belongs to you, stored on your device, subject to no company's privacy policy.