Photomath

"We may collect, use and share location data, including the real-time geographic location of your device, in connection with your use of the Service, for example using IP address, satellite, cell phone tower or WiFi signals. The location information may be used as part of certain features of the Service, such as for example to change default language shown in the Service. By using the Service, you consent to the collection of your location information."

Photomath collects real-time geographic location using GPS, cell towers, WiFi, and IP address — far more invasive than needed for a math-solving app. The stated purpose (changing default language) does not justify satellite/cell tower tracking.

"We may disclose personal data you provide to the Service with the following categories of third parties: To service providers, such as data storage service providers; To our business partners, such as advertising partners, in compliance with applicable laws; To our technology partners, such as machine vision technology partners."

Personal data is shared with advertising partners, technology partners (machine vision), analytics providers, and affiliates — a broad set of third parties for a math tutoring app.

"These Third Party Advertising Service Providers collect and use personal data about your visits to and use of the Website and mobile Application, as well as other websites in order to serve you with advertisements and content tailored to meet your preferences and likely interests. This Website uses retargeting technology for online advertising. This makes it possible to specifically address the Internet browsers with advertising that have already shown interest in our products and services."

Photomath uses Facebook Pixel, Google Ads, and retargeting technologies that track users across websites and services to build interest profiles and serve targeted ads.

"We collect information about the device you use to access the Service, including for example the hardware model, operating system and version, app instance identifiers (non-hardware), unique device identifiers, MAC address, IP Address, and mobile network information."

Photomath collects MAC addresses, unique device identifiers, and mobile network information — data that goes beyond what a math-solving app needs and can be used for device fingerprinting.

"From time to time we may change this Privacy Policy. If we materially change the ways in which we use and disclose personal data, we will post a notice in the Service. Your continued use of the Service following any changes to this Privacy Policy constitutes your acceptance of any such changes made."

Photomath can change its privacy policy at any time and treats continued use as acceptance, with no requirement for affirmative consent to material changes.

"We only retain Personal data for as long as it is necessary for the purposes set out in this Privacy Policy. We only collect and therefore store anonymized data from your first use of Services. In the absence of any legal requirements regarding data retention we intend to keep it that way. We still grow as a company and user data is valuable to better understand which direction to take in the future."

No specific retention periods are defined, and the policy explicitly states user data is valuable for the company's future growth — suggesting indefinite retention in practice despite vague minimization promises.