Syntrofos

Free plan iPhone

What Syntrofos is

Syntrofos is an iOS AI companion with natural conversations, voice conversations, persistent memory, and smart reminders. It can retain preferences, names, and important dates, then bring them into a conversation when relevant. Users can write reminders in plain language, and the app can pick up dates from conversation. Personalization includes eight preset personalities and the option to create one by adjusting traits, tone, and humour; a personal AI profile is also available. Syntrofos is free to download and use. Conversation history is stored locally by default, with optional syncing through a private iCloud keychain. The maker says messages are not used to train third-party models and user data is not sold. Messages are routed to the language model the user configures, and data may be disclosed to selected cloud inference providers. Users can export or delete conversation history in the app; account deletion permanently erases associated server-side records. The app is not directed at children under 13.

Who it suits

Syntrofos suits iOS users seeking a conversational companion with memory, voice conversations, reminders, and personality customization. Its local-by-default history and optional iCloud sync may also suit people who want control over how conversation history is stored.

What it does well

Remembers preferences, names, and important dates.
Plain-language reminders and date detection are available.
Users can customize personalities or choose eight presets.
Conversation history is stored locally by default.

What to know first

The listed platform is iOS.
Messages are routed to a configured language model.
Data may be disclosed to selected cloud inference providers.

Plans

Plan	Billed and limits	Price
Free	Free to download and use · iOS app	Free

As syntrofos.app lists them, read 10 Oct 2026. The maker's own page has the final word.

Getting started

Open the Syntrofos website
Download the free iOS app
Configure the language model used for messages
Choose one of the eight preset personalities or create your own
Set reminders in plain language and use voice conversations
Keep history local or enable optional private iCloud keychain syncing

Verdict

Syntrofos combines memory, reminders, voice conversations, and adjustable personalities in a free iOS app. Users should note that messages go to their configured model and may reach selected cloud inference providers.

Questions

How much does Syntrofos cost?

Syntrofos is free to download and use on iOS.

Which devices support Syntrofos?

The listed platform is iOS.

Where is conversation history stored?

History is stored locally by default. Users can optionally sync it through their private iCloud keychain.

Does Syntrofos sell messages or use them for training?

The maker says it does not sell user data or use messages to train third-party models.

Can I export or delete my conversations?

Yes. The app provides controls to export or delete conversation history. Account deletion permanently erases associated server-side records.

How does Syntrofos handle language-model providers?

Messages are sent to the language model configured by the user, and data may be disclosed to the cloud inference providers they select.

Facts from Syntrofos's own pages

Audience limit: Syntrofos says it is not directed at children under 13 and that it does not knowingly collect their personal information. · syntrofos.app, 10 Oct 2026
Data controls: Users can export or delete conversation history in the app; account deletion permanently erases associated server-side records. · syntrofos.app, 10 Oct 2026
Data use: The maker says it does not sell user data or use messages to train third-party models. · syntrofos.app, 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. · syntrofos.app, 10 Oct 2026
Maker: The maker describes Syntrofos as built by a small team of designers and engineers focused on one product. · syntrofos.app, 10 Oct 2026
Memory: It can remember preferences, important dates, and names, then bring them up when relevant. · syntrofos.app, 10 Oct 2026
Personalization: The app offers eight preset personalities and lets users create their own by adjusting traits, tone, and humour. · syntrofos.app, 10 Oct 2026
Platforms: Syntrofos is live on iPhone via the App Store; the maker says more platforms are planned without giving a timeline. · syntrofos.app, 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. · syntrofos.app, 10 Oct 2026
Product: Syntrofos is an AI companion with long-term memory, smart reminders, customizable personalities, a personal AI profile, and natural conversations. · syntrofos.app, 10 Oct 2026
Reminders: Users can set reminders in plain language, and Syntrofos can pick up important dates from conversation. · syntrofos.app, 10 Oct 2026
Support: The contact page says the team typically responds within two business days, and acknowledges security disclosures within 72 hours. · syntrofos.app, 10 Oct 2026

Where Syntrofos stands on Freedom251

AI Companion Apps#29 of 35