Last verified on 26 April 2026. Pricing, features, and policies change – check the source if anything looks off.
Ostler: $49.99 + $24.99/mo – replaces $87/mo of cloud AI subscriptions.
Omi: $89 hardware + subscription – wearable mic with cloud transcription.
Omi is a wearable pendant that records your conversations and transcribes them in the cloud. Ostler captures conversations too – but it also processes them locally, connects them to your relationship graph, and turns them into searchable knowledge. Capture versus understanding.
| Ostler | Omi | |
|---|---|---|
| Your data | Stays on your Mac | Sent to Omi's cloud |
| Transcription | Local (Whisper on your Mac) | Cloud transcription |
| Price | $49.99 once + $24.99/mo | $89 hardware + subscription |
| Capture method | iOS app + macOS app | Wearable pendant (always-on) |
| Relationship intelligence | Yes (warmth, reciprocity, history) | No |
| Conversation coaching | Longitudinal behavioural analysis | No |
| Multi-platform import | 20 platforms via GDPR | Conversations only |
| Personal wiki | Auto-generated, 21 page types | No |
| AI assistant | iMessage, WhatsApp, email | Via app |
| Works offline | Yes | No (needs cloud for transcription) |
| Open source | No | Yes |
Omi solves the capture problem elegantly. You wear a small pendant, it records conversations, and transcripts appear on your phone. It is a clever piece of hardware. The open-source approach is admirable.
But what happens after capture? Omi gives you a transcript. A wall of text. You can search it. That is about it.
Ostler takes that same transcript and extracts facts, identifies people, maps relationships, detects communication patterns, and files everything into a knowledge graph that connects to your entire digital history. The transcript becomes part of your life's searchable record, cross-referenced with 20 years of LinkedIn messages, email, and social media data.
Recording a conversation is useful. Understanding what it means in the context of your entire relationship with that person – that is the hard part, and that is what Ostler does.
Omi records your voice and sends it to cloud servers for transcription. Your most private conversations – with your partner, your doctor, your lawyer – are processed on someone else's infrastructure. They promise to protect it. You have to trust that promise.
Ostler transcribes locally using Whisper, running on your Mac. The audio never leaves your house. The transcripts are stored in local databases. There is no cloud server to breach, subpoena, or hack.
For conversation data specifically, we think the privacy difference is not just philosophical. Conversations are the most sensitive data category most people generate. Where those recordings are processed matters.
Omi has a genuine advantage here: the wearable form factor means it captures conversations automatically. You do not have to remember to press record. It is always listening.
Ostler's capture requires opening the iOS companion app or using the macOS app for Zoom and FaceTime calls. It is more deliberate. You choose what to capture. Some people prefer that – explicit consent for each conversation. Others want the always-on approach.
We designed Ostler to potentially support Omi as an input device in the future. The pendant captures, Ostler processes – best of both worlds, with local transcription.
Do you want a recording device that gives you transcripts in the cloud? Or do you want a local intelligence system that turns conversations into relationship knowledge? Omi captures audio. Ostler captures meaning. If you already have an Omi, Ostler is what makes those transcripts useful.