Pi, your personal AI

Pi Review: Free and Ad-Free, but the Voice Still Cuts You Off

Free, no ads, 18+ only: where the limits actually sit

Neither store lists a price, an in-app purchase or a subscription for this app, and Google Play shows no Contains ads badge, so the free tier is the whole product on the date we checked. The limits sit elsewhere. The developer's terms and help center allow adults only, the App Store carries an 18+ rating while Google Play shows Teen, and the iPhone listing names English as its only language, although typing in another language makes the assistant switch to it with uneven fluency. Image upload, generation and editing are not supported, and the help center says there is no built-in high-contrast mode or larger text, with VoiceOver and TalkBack working only partly. Because the two stores disagree on the age rating, check the current listing and terms yourself.

Tap to Talk, Hands-free and Zen display: the voice modes

Voice is what most people open this app for, and the July 28, 2026 iPhone update gave it two modes. Hands-free suits a quiet room. Tap to talk lets you tap once, speak without interruption and tap again when you are done, and tapping while Pi is speaking lets you jump in at once. A Zen display swaps the live transcript for a soundwave. The modes exist because pauses were the problem: Google Play reviewers describe being cut off after silences as short as half a second, and a Spanish-language review calls the pause detection aggressive. The developer's replies send those users to the three-dot menu inside a voice chat. Non-English voice fares worse, with Spanish, Portuguese and Arabic speakers reporting mishearing and accent trouble.

Memory, training and the 15-day rule: what the app keeps

Memory is explicit. You say Remember and a lasting fact, such as your name, home city, allergies, job or preferred answer length, and Pi stores it, though you may need to repeat it; one-off plans are skipped. Entries live in Settings, Account, Manage Memories, where they can be added, edited or deleted, and very long chats may be summarised, so recall is not unlimited. On data, Google Play's safety card says nothing is shared with third parties and lists voice recordings, email, user ID, phone number and crash logs as collected. The privacy policy says model training is on unless you opt out in Account settings, and that voice-based emotion inference can be switched off there too. After you delete an account, inputs are generally kept at most 15 days, while outputs are retained indefinitely for limited purposes.