Mobile app

The other half of the product.

The pendant listens. The app is where the conversation becomes something you can actually use.

Launching with the pendant

The app is in final review for the App Store and Google Play. Join the launch list and we will send you the link the day it goes live.

The app

Where the conversation becomes useful.

The pendant listens. The app is where a day of talking turns into something you can read in a minute and search in a second. These are the real screens, from the current build.

The Memory screen: Today's Memory recap of three recordings with highlights, and filters for Important, Tasks and Reminders
MemoryThe whole day on one card. What was decided, what's open, who promised what.
A recording: player with waveform, the title, Ask AI about this conversation, then the overview and key takeaways
One conversationPlay it back, read the overview, or just ask it a question.
Settings: Language, People (voices deHertz can recognise), Thought Catcher, and a Biometric Vault toggle for Face ID
Yours to controlVoices it recognises, the language it transcribes in, Face ID on the vault.
The Personalization screen: what you use deHertz for, and your native and target languages from a list of fifteen
LanguagesFifteen languages. Set once, and transcription follows the switch.
More about the app

iOS 15 and later. Android 9 and later. Included with the pendant — no separate subscription.

In the app

Everything your pendant hears, organised.

Free with your device. No separate subscription, no per-minute charge.

Pair in under a minute

Turn the pendant on, open the app, tap pair. Nothing to type in.

Record without the pendant

Phone microphone mode and audio file import, for when you left it at home.

Your memory, by day

A calendar of everything you recorded, with a digest for each day.

Search every word

Full-text search across every transcript you have ever made.

Reminders from what you said

Commitments with a date attached become notifications automatically.

15 languages

Including Arabic, Hindi and Urdu, with the right script in the transcript.

Works on both.

iOS 15 and later. Android 9 and later. Bluetooth Low Energy required.

Setup guide

Using the app

Questions about the app itself.

Do I need the app to use the pendant?
Yes. The pendant records and stores audio, but transcription, summaries and search all live in the app, and that is where recordings sync to.
Does it cost anything?
No. The app is included with your pendant — there is no separate subscription and no per-minute transcription charge.
Which devices does it run on?
iOS 15 and later, and Android 9 and later. Bluetooth Low Energy is required, which every phone from the last decade has.
Can I use it without a pendant?
Yes. Phone-microphone mode records straight from the handset, and you can import audio files you already have.
Does it drain my phone battery?
Syncing is short and infrequent — the pendant stores audio locally and transfers it in bursts rather than streaming continuously.
What happens if I change phone?
Sign in on the new device and everything is there. Recordings live in your account, not on the handset. You will need to pair the pendant again.
Is there a desktop or web version?
Not yet. It is on the roadmap; today the app is the place to read and search your memory.
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