Syntrofos
Syntrofos is a free iOS AI companion built around natural conversations, voice chats, persistent memory and reminders.
What Syntrofos is
Syntrofos is a free iOS AI companion built around natural conversations, voice chats, persistent memory and reminders. It can remember preferences, names and important dates, then mention them when relevant. Users can create reminders in plain language, and the app can identify dates from conversations. A personal AI profile and eight preset personalities shape interactions; custom personalities can be created by adjusting traits, tone and humour. The app is free to download and use. Conversation history is stored locally by default, with optional syncing through a private iCloud keychain. The maker says it does not sell user data or use messages to train third-party models. Messages are sent to the language model configured by the user and may be disclosed to selected cloud inference providers. Users can export or delete conversation history in the app, while account deletion permanently erases associated server-side records. Syntrofos is made by a small team and is not directed at children under 13.
Good
- Free to download and use
- Persistent memory for names and dates
- Plain-language reminders
- Eight presets plus custom personalities
- Local history storage by default
Watch out
- iOS only
- Messages may reach chosen cloud providers
- Not directed at children under 13
Who it suits
Syntrofos suits iPhone and iPad users seeking a conversational AI companion with memory, reminders, voice interaction and personality customization. It is intended for users comfortable managing optional cloud syncing and provider routing.
Verdict
Syntrofos combines conversational AI, reminders, memory and extensive personality controls in a free iOS app. Local-first history and export or deletion tools provide data controls, while configured cloud providers may receive messages.
Plans and prices
From Syntrofos's own pricing page, checked 10 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | Free to download and use · iOS app |
The facts
Each one read from Syntrofos's own pages, with the date it was checked.
What it does
- Audience limit
- Syntrofos says it is not directed at children under 13 and that it does not knowingly collect their personal information.checked 10 Oct 2026
- Data controls
- Users can export or delete conversation history in the app; account deletion permanently erases associated server-side records.checked 10 Oct 2026
- Data use
- The maker says it does not sell user data or use messages to train third-party models.checked 10 Oct 2026
- Integrations and providers
- The service routes messages to the language model the user has configured and may disclose data to chosen cloud inference providers; the policy also names Apple for App Store delivery and iCloud sync.checked 10 Oct 2026
- Memory
- It can remember preferences, important dates, and names, then bring them up when relevant.checked 10 Oct 2026
- Personalization
- The app offers eight preset personalities and lets users create their own by adjusting traits, tone, and humour.checked 10 Oct 2026
- Privacy and storage
- The privacy policy says conversation history is stored locally by default; users can optionally sync it through their private iCloud keychain.checked 10 Oct 2026
- Product
- Syntrofos is an AI companion with long-term memory, smart reminders, customizable personalities, a personal AI profile, and natural conversations.checked 10 Oct 2026
- Reminders
- Users can set reminders in plain language, and Syntrofos can pick up important dates from conversation.checked 10 Oct 2026
- Support
- The contact page says the team typically responds within two business days, and acknowledges security disclosures within 72 hours.checked 10 Oct 2026
The company
- Maker
- The maker describes Syntrofos as built by a small team of designers and engineers focused on one product.checked 10 Oct 2026
Where it runs
- Platforms
- Syntrofos is live on iPhone via the App Store; the maker says more platforms are planned without giving a timeline.checked 10 Oct 2026
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