Last updated: November 9, 2026
App: Monster Me - Halloween Costume for Android (also shown as Spooky Me in the newer Android build)
Package: com.marsgroup.vampire
Developer: MarsGroup
Privacy contact: marsgroupapp@gmail.com
Monster Me turns a portrait you choose into an AI-generated costume image. This policy covers the Android app, including version 1.0.1 and the newer build that uses Relay. The app does not require a Monster Me account.
You can choose a photo or use your device’s camera where available. When you start a makeover, the app sends the selected portrait and an instruction based on the costume and options you chose to an online image generation service. The service processes the portrait to return a generated image. You can avoid this transfer by skipping generation. Please use photos you have permission to submit.
Version 1.0.1 sends the portrait through our legacy image service, which forwards it to Google’s Gemini API. The older Android app may send its upload to our legacy service over an unencrypted connection. The legacy service uses temporary upload files and is designed to remove them after forwarding or on a handled error. Google may retain uploaded files or other request data under the applicable Gemini API terms.
The newer Android build sends requests over HTTPS to our Relay at relay.marsgroup.cn, hosted on Cloudflare. Relay forwards the selected portrait and generation instruction to the configured AI provider, such as Google Gemini or OpenAI. These providers may process and retain request data under their applicable API terms and settings. Relay’s routine request logs do not store portraits, generated images or generation instructions.
Relay can record the app and Android versions, language, broad country or region, request identifiers, timestamps, processing time, status and errors. It uses a hashed network identifier to limit abuse. We use these records to operate the service, troubleshoot failures and prevent misuse. Routine Relay request records are scheduled for deletion after 90 days.
The app uses Google Analytics for Firebase to understand usage. The newer Android build also uses Firebase Remote Config to deliver settings such as the starting credit balance. These services can process app installation or instance identifiers, app interactions, device and app details, language and approximate location inferred from the network. The newer Android build disables advertising storage, advertising user data and ad personalization.
Optional credit packs are purchased through Google Play. Google handles payments and provides the app with purchase details such as the product, status and purchase token so the app can verify and fulfill the purchase. The newer Android build stores the credit balance and a record used to prevent duplicate credits on the device. Google Play Billing can also send billing interactions, device and app information, and diagnostics to Google. MarsGroup does not receive your card or bank account details.
The app can keep generated images in Favorites and save copies to your device’s photo library. You can remove favorites in the app and delete saved copies separately in your photo library. If you share an image, Android sends it to the app or recipient you select. Clearing app data or uninstalling removes app-private data such as local favorites and credits, but may leave copies in the photo library and does not erase Google Play transaction records.
If you contact us, we receive your email address and the information you choose to include. We use it to respond and troubleshoot. We retain support correspondence while needed to handle your request or meet legal obligations. You can ask for access, correction or deletion of personal information we hold by emailing marsgroupapp@gmail.com. Include the app name and, if relevant, the request ID shown by the app. Please avoid sending a portrait unless needed for your request. Google and other providers manage records on their systems under their own policies.
Monster Me is not directed to children under 13. If you believe a child has provided personal information, contact us so we can look into it. We update this page when our data practices change.
Google Privacy Policy · Gemini API terms · OpenAI API data practices