100% money-back guarantee within 90 days if not completely satisfied.


For those with an older independent loved one, Sentai is a friendly and intelligent companion who can be with them 24/7, providing peace of mind.

Monthly Subscription (first 3 months free)


Plus £49.99 one-off hardware charge.

And as a thank you, we’ll give you the first 3 months free.

You will need an Amazon Alexa device and Apple iPhone to use Sentai.

Frequently asked questions

Can I use Sentai on any mobile device?

You'll need to have an Apple iPhone to use the companion app. Although, Android mobile phones will be compatible very soon.

What is the Sentai hardware?

We include a motion sensor, a click to talk button and a Sentai Smart hub that connects your device to the internet (and Alexa) to allow it to work.

Is Sentai right for me?

If you or a loved one is living independently, Sentai can help. Offering companionship, reminders, safety and communication with family, it’s the perfect option for those looking to keep an eye on their older family members.

How do I get help if I need it?

You can either head over to our support page, or simply pop an email to support@sentai.ai.