English below first. 日本語は英語の下にあります。

English

Effective date: November 5, 2026

HomemadeCondom (自家製コンドーム in Japanese) is an iPhone artwork made by Akihiro Niimura. This policy explains what information the app handles and where it goes.

Summary

• The app does not collect personal data. The developer receives no information from your iPhone.
• The app makes no network connections. It contains no advertising, analytics, or tracking.
• What the app records stays on your iPhone, unless you choose to pass a cutting to someone.

What the app stores on your iPhone

The app keeps your membrane as one file, specimen.bin, in the app's Documents folder. You can see it in the Files app. The file contains:

• The membrane's shape and history: wrinkles, scars, bubbles, and where and when it was touched. Touch marks fade after six hours.
• A record of its birth: the date and time, your iPhone's model identifier, the iOS version, the screen size, the maximum frame rate, the number of processor cores, the memory size, the thermal state, the battery level, whether Low Power Mode was on, random numbers from iOS, and motion-sensor readings and frame timings from its first moments. These values shape the membrane, so no two are alike.
• A lineage log: when the app version or the iPhone model changed, when the membrane was transplanted, and irregularities in the clock.

The file contains no name, email address, contacts, location, photos, audio recordings, or advertising identifier.

The app also stores one setting that records whether you have passed the invitation gate.

Microphone

If you allow microphone access, the app measures how loud breath and voice are in two frequency ranges and moves the membrane in response. The sound is processed on your iPhone as it arrives. It is never recorded, saved, or sent. You can turn microphone access off at any time in Settings.

Motion sensors and touch

The app reads the accelerometer, the gravity sensor, and your touches on the screen to move the membrane. These readings are used only on your iPhone. Apart from the birth record and touch marks described above, they are not saved.

Invitation code