# Wonder \| Hormonal Coil Guide

> Wonder | Hormonal Coil Guide (iPhone/iPad app by Bayer Group.)

- Source: https://appshunter.io/ios/app/wonder-hormonal-coil-guide/id1483940254 (this page in markdown: same URL + `.md`)
- Developer: [Bayer Group](https://appshunter.io/developer/480186736)
- Category: Health & Fitness
- Price: Free
- Age rating: 4+
- Requires: iOS 12.4 · 28 MB
- Languages: American English
- Released: 2020-02-26
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/wonder-hormonal-coil-guide/id1483940254/reviews.md

## What is Wonder | Hormonal Coil Guide?

Wonder provides you support when you start using a hormonal coil. You can follow the volume of menstrual bleeding and mark down how you feel. 
The app is meant for users of a certain type of a hormonal coil. You can obtain more information from your nearest family planning clinic or your gynecologist before starting to use the app. 

The app tells you what is the effect of the hormonal coil on your body and on how you feel. It provides you with information on what the hormonal coil is like, how it is placed, how it works and how your periods may change after the placement of the hormonal coil.

The hormonal coil slowly releases small amounts of levonorgestrel into the womb at a constant rate. The hormonal coil guide of the app provides you with information on how the hormonal coil prevents pregnancy and affects periods. 

You can prepare yourself for the placement of the coil with the help of the app. It provides you with specific information on how the hormonal coil is placed, how that feels, what is normal and when you should contact a doctor.

You may have many questions related to starting the use of a hormonal coil. The app shows you answers to frequently asked questions that relate to the hormonal coil as a contraceptive method, the hormonal activity in the body, the menstrual cycle, pregnancy and breastfeeding. 

Wonder also has a period tracker and a calendar. You can easily mark in the app your bleeding and spotting days after starting the use of a hormonal coil and also how you feel. 

In the calendar view, you can see the number of your bleeding and spotting days and any changes in how you feel on the long term and, if necessary, easily provide this information to health care professionals.

PP-KYL-FI-0048-4/09-2020


## Version history (last 5 releases)

### 1.10.4 — 2026-03-18

Small improvements and bug fixes

### 1.10.3 — 2025-12-10

Small improvements and bug fixes.

### 1.9.4 — 2023-07-31

Small improvements and bugfixes.

### 1.8.1 — 2022-05-17

Bug fixes and performance improvements.

### 1.8.0 — 2021-09-23

We added a calendar to Wonder and made some clarifications to the FAQ-part. The guide-page also has a new layout.

## More apps by Bayer Group

- [Agrar Wetter](https://appshunter.io/ios/app/agrar-wetter/id373041892)
- [Agrar TV](https://appshunter.io/ios/app/agrar-tv/id373263770)
- [Premeo](https://appshunter.io/ios/app/premeo/id461421112)
- [Weed ID](https://appshunter.io/ios/app/weed-id/id720210823)
- [Weer Météo Bayer](https://appshunter.io/ios/app/weer-meteo-bayer/id828420293)
- [Radio Héros](https://appshunter.io/ios/app/radio-heros/id989173136)

All apps by Bayer Group: https://appshunter.io/developer/480186736

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*