ovolution App – Instructions for Use (e-IFU)​

Version 1.0 – 1 January 2025

Contents

1. Purpose and Target Audience
2. Getting Started
3. Usage & Functionality
4. Warnings & Risks
5. Data and Security
6. Support and Contact

Intended Purpose

The purpose of the Ovolution app is to enable women to track their fertility cycle digitally and to determine when they are most likely to be fertile and when they are not, with a view to becoming pregnant. The app is not intended for contraception. 

The app uses the Sensiplan NFP method, a symptothermal method that combines two fertility indicators to determine the fertile and infertile days in a woman’s cycle.

Contraindications

The Ovolution app should not be used by:

• Women with serious systemic illnesses that permanently affect body temperature
• As a method of contraception

Safety information

Please read the instructions for use carefully before using the ovolution app.

Warnings

• This app is not a substitute for medical advice. If you have any health concerns, menstrual irregularities or questions about contraception, please consult your doctor or a certified NFP counsellor.
• The NFP method does not protect against sexually transmitted infections. Barrier methods (e.g. condoms) are required for prevention.
• Data entry errors can distort the analysis. Record your physical signs daily and accurately, following the instructions in the app.
• If you become pregnant or suspect you are pregnant whilst using the app, consult your doctor immediately.
• Temperature readings may be affected by external factors (e.g. alcohol, illness, lack of sleep, changes in time zones, alarm clock adjustments). Such factors must be recorded in accordance with the method.

Data Protection

Your health data is encrypted and processed in accordance with the GDPR. Further information can be found in the privacy policy at:
https://ovolution.rocks/datenschutz

Installation and Account

Download the app

Download ovolution for free from the Apple App Store (iOS) or Google Play Store (Android). Search for “ovolution”.

Create an account

1. Launch the app.
2. Tap ‘Register’.
3. Enter your email address and a password.
4. Confirm your email address via the confirmation link sent to you.     
5. Alternatively, you can sign in with a Google account or Apple ID.

Sign in

1. Launch the app.
2. Tap “Log in” and enter your login details.

▎ Note: The first time you use the app, you must complete the entire setup wizard.

When you first launch the app, a wizard will guide you through the basic setup:        

• Specifying the purpose of use
• Selecting the thermometer type and measurement site
• Entering information about previous cycles (optional)

All information can also be changed later in the NFP settings.

Main features of the app

The app consists of four main sections, which can be accessed via the bottom navigation bar:

Cycle View

The Cycle View provides a central overview of your current cycle status.

Elements of the Cycle View:

• Pie chart: Visualises the entire cycle in phases (menstruation, follicular phase, ovulation, luteal phase). The current day is highlighted. Tap a day on the chart to select it.     

• Fertility indicator: Shows whether the selected day has been classified as fertile, infertile or not yet evaluable.

• NFP worksheet: A scrollable NFP worksheet providing a visual representation of all recorded data, including basal body temperatures, cervical mucus analysis and other symbols. A legend can be accessed below the NFP worksheet.

  The NFP worksheet can be exported and shared. To do this, select the relevant cycle, then click on the ‘…’ above the NFP worksheet and select ‘Share cycle sheet’. When exporting, you can choose the format (PNG/PDF). The latter also includes a more detailed report

▎ Note: The exported charts can be used for discussion with an NFP counsellor or your doctor._

**Cycle navigation:** Use the arrow keys to switch between previous cycles. The ‘Today’ button takes you back to the current day.

• Export chart: Use the export icon to save and share the chart as a PNG or PDF.                                                    

Calendar view

The calendar view displays a monthly calendar with cycle phases marked in colour.

• Coloured markers indicate menstruation, fertile and infertile phases.
• Dotted frames indicate predicted future periods.
• Small dots on a day indicate that tracking data is available.
• Tap a day to view the recorded data or enter new data.        

Statistics

The statistics view gives you an overview of your cycles to date:

• Number of cycles analysed
• Average cycle length
• Average period duration
• Average luteal phase
• Earliest rise in temperature
• Total days recorded                                                                                                         

Individual analysis per cycle:

Horizontal bar charts show the length of each phase of the cycle, as well as the distribution of fertile and infertile days.

Learning

The learning section contains comprehensive educational material on the NFP method and the female cycle:

• Tutorials: Step-by-step guides to taking your temperature and observing cervical mucus
• NFP basics: Articles on the basic principles of the method
• NFP Rules: Explanation of the evaluation rules (double-check principle, start and end of fertility)
• Physical Signs: Information on symptoms associated with the cycle
• Trying for a baby: Articles to support targeted conception
• Menstrual cycle disorders: Information on irregular cycles, PCOS, endometriosis and more
• Information on period pain and PMS

Recording daily data (tracking dialogue)

Tap on any day in the cycle circle, on the NFP worksheet or in the calendar, then select the pen icon at the bottom of the menu to open the tracking dialogue for that day.

When entering data, the Sensiplan rules must be followed to ensure correct analysis. You can find information on this in the app’s learning section, in the relevant literature or by consulting a certified Sensiplan counsellor.

Basal Body Temperature

1. Tap the temperature field.
2. Enter the measured value (in °C or °F, depending on your settings).
3. Enter the time of the measurement.
4. If the measurement was disrupted (e.g. due to interrupted sleep or illness), mark the measurement as disrupted.

▎Measurement tip: Take your temperature daily before getting out of bed, at the same time, after at least 3 hours of uninterrupted sleep. Use a suitable basal thermometer that measures to an accuracy of 1/100 of a degree.

Supported measurement sites: oral, vaginal, rectal (set under Profile → Settings)

Cervical mucus

Record daily observations alongside your basal body temperature as a second indicator for determining ovulation. This can be either cervical mucus, which is divided into three categories:

• Feeling: dry, moist, wet, slippery
• Appearance: colour and consistency (e.g. whitish, creamy, glassy, stringy)
• Special features: interfering factors, infections, bleeding and other abnormalities

or, alternatively, observation of the cervix. 

Cervix

Record the position, degree of dilation and consistency of the cervix:

• Position: low, mid, high
• Dilation: closed, slightly open, open
• Consistency: firm, medium, soft

Period

The period marks the start of the next cycle. 

• Menstrual flow: light, moderate, heavy
• Colour (not relevant to assessment): light brown/brown, brown-red, light red
• Products used (not relevant to assessment) 

Sexual intercourse and libido

• Unprotected sexual intercourse
• Protected sexual intercourse (condom)
• Libido / sexual desire (not relevant for analysis)

Optional tracking categories

In addition, further observations can be recorded according to the categories, although these are not relevant for the Sensiplan evaluation. The exception to this is breast and lower abdominal pain, which are recorded under ‘Other physical signs’ in accordance with the Sensiplan rules in the NFP worksheet.

The remaining observations are displayed in a separate section below the NFP worksheet to keep them distinct from the NFP worksheet. 

Saving and Deleting

• Click ‘Save’ to save the entries for the day.
• Click ‘Delete’ to remove all data for the selected day.

Pregnancy Detection

The app automatically detects a possible pregnancy if your temperature remains in the high phase for 18 days. This is provided that the data has been entered correctly.

• A notification dialogue box appears.
• The cycle can be marked as a pregnancy cycle. The weeks of pregnancy are then displayed in the NFP worksheet, calculated from the date of ovulation.
• The app displays the estimated due date.
• You can find relevant information in the learning section.                                                                                                                                                

  ▎ Important: A display in the app is no substitute for confirmation by a doctor.

Menu

You can open the menu via the icon in the top left-hand corner of the home screen.

The following options are available in the menu

Settings

Settings is divided into further sections:

Account

• View email address
• Change password
• Change email address
• Delete account

If you have logged in with a Google or Apple account, you can find information on this here.

Local Notifications

Set up reminders for

• Start of period
• Temperature measurement (with preferred time)
• Secondary symptom / cervical mucus (with preferred time)

Design

• Light / Dark mode / System settings
• Colour scheme (Standard, Blue, Berry, Purple)

Language and Units

• Temperature unit (°C / °F)

Note: If you wish to use a language other than the system language, this can be set in the iOS/Android app settings. 

NFP Settings

• Thermometer type (digital, NFP-specific)
• Measurement site (oral, vaginal, rectal)
• Goal (contraception / trying for a baby / not specified)
• Special circumstances (after taking the pill, breastfeeding)
• Cycles recorded outside the app

Subscription

Information on your current subscription, available plans and renewal. Prices, contract terms and trial periods can be viewed there. 

You can also view your purchase history and cancel your subscription via ‘Manage Subscription’ within the app. Furthermore, subscriptions to the ovolution app can be cancelled in the usual way, just like any other app, via the relevant Android or Apple subscription management sections, even outside the app.  

About ovolution

Here you will find all legal information, such as:

• App version
• Privacy policy
• Legal notice
• Medical Device Regulation (MDR) information
• Terms and conditions

Technical Security and Data Protection

• All health data is transmitted in encrypted form via SSL/TLS and stored in a secure cloud database.
• Data is stored on servers within the EU in accordance with the GDPR. For further information, please refer to the privacy policy.
• Your data will not be sold to third parties.
• You have the right to access, rectify and erase your data. Please send your enquiry to: hello@ovolution.rocks

Support and Contact

For technical enquiries or feedback, please contact:

Email: support@ovolution.rocks
Website: https://ovolution.rocks
Address: ovolution GmbH, Friedrich-Ebert-Straße 161, 64347 Griesheim, Germany

Performance Limitations and Disclaimer

The reliability of the Sensiplan NFP method depends on consistent and correct use by the user. The app supports the use of the method but does not replace the user’s personal responsibility.

The app is not a substitute for specialist medical advice.

The app’s results (fertile/infertile) are intended to aid decision-making and do not constitute a medical diagnosis.

If you are unsure about the results or if your cycle is atypical, we recommend consulting a certified NFP Sensiplan counsellor.

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Note: The user manual covers all MDR-relevant areas: intended use, warnings, contraindications, safety instructions, a full description of functions and the disclaimer.