The App Store lists the kegg app as free to download
What's paid
The kegg sensor. On 1 November 2026 the product page showed $279 on sale and $477 regular, and marked the item sold out
Price and billing period
Sale price $279 (regular $477), marked sold out on 1 November 2026 kegg.tech
Trial
Not stated by the company
Card needed
Not stated by the company
Auto-renew
Not stated by the company
How to cancel
Not stated by the company
The sensor is a purchase. On 1 November 2026 the product page showed $279 on sale from $477 and marked it sold out. The app listing is free. The page says checkout can use HSA/FSA.
Yes: hashed emails and device IDs are matched into ad audiences
Policy date: August 26, 2021
Quote
We also use tools that help us identify and reach out to existing and new customers, by matching cookies, device identifiers and hashed (a pseudonymisation technique) email addresses of people who have been using our Services with people on social media platforms to create so called “Custom Audiences” (this enables us to send targeted ads to people who have been using our Services)
Yes: the policy allows transfers to affiliates, service providers, and partners
Policy date: August 26, 2021
Quote
We transfer information to our corporate affiliates, service providers, and other partners who process it for us, based on our instructions, and in compliance with this policy and any other appropriate confidentiality and security measures.
Yes: deleting the account starts a deletion that can take up to 90 days
Policy date: August 26, 2021
Quote
If you choose to delete your account, while most of your information will be deleted within 30 days, it may take up to 90 days to delete all of your information, like the data recorded by your device and other data stored in our backup systems.
People who will buy a device instead of monthly strips, and who will treat a fertile-window estimate as an estimate.
kegg's product page describes a silicone device for a short daily reading of the vaginal environment, with results in the kegg app. The company says the app shows a cervical-fluid score and an ovulation probability. On 1 November 2026 that page showed a sale price of $279 and a regular price of $477, marked the item sold out, and said checkout can use HSA/FSA. The privacy policy says the device records electrolyte levels in vaginal fluids and sends them to the company's servers when it syncs. Those readings are product features, not a diagnosis and not a contraceptive method. The App Store listing checked is kegg, from Lady Technologies, Inc.
Pros
The company says one device reads cervical fluid and charts it in the app, with no monthly strips.
The product page offers HSA/FSA checkout.
Cons
On 1 November 2026 the product page showed $279, down from $477, and marked the item sold out.
A fertile-window estimate is not a diagnosis and not contraception. The privacy policy says users under 21 may not use the service.
