01 · Product
Sayo
Record a thought. Sayo transcribes it on the device and pulls out the tasks, events, and ideas buried inside it.
- One tap to record. No account to create, no API key to paste in.
- Transcription runs on the device, so a memo never has to leave the phone to become text.
- Extraction separates the transcript into tasks, events, ideas, and a summary.
- Tasks can be pushed into Apple Reminders and events into Apple Calendar.
- Folders, tags, and locked memos, for the notes that should not sit in a general list.
- Transcripts stay editable, because dictation always gets names and numbers wrong eventually.
- Daily check-ins, for keeping a recurring spoken log.
- iCloud sync across devices, plus an Apple Watch app for capture away from the phone.
Sayo is SwiftUI and SwiftData, with sync through CloudKit and purchases through StoreKit 2.
The extraction step runs against Apple's on-device foundation model rather than a hosted API. That one decision shapes the whole architecture: there is no inference server to pay for, no key that can leak, and no transcript sitting in a vendor's logs.
It also imposes a real constraint. The on-device model has a fixed context window, so a long memo cannot simply be handed over whole. It has to be split, processed, and merged back into one coherent result. Most of the engineering in Sayo lives in that seam, and that is the part a wrapper around a hosted API never has to solve.
Free to download, with in-app purchases. Prices below are the current App Store listing.
- Free
- 5 memos with full extraction
- Pro, monthly
- $6.99
- Pro, annual
- $39.99
- Pro, lifetime
- $99.99
Do my recordings get sent to a server?
No. Transcription and extraction both run on the device. iCloud sync moves data between your own devices, through your own iCloud account.
Do I need an API key or a subscription to another AI service?
No. There is nothing to configure and no third-party account to connect.
What does Pro actually unlock?
The free tier includes five memos with the full extraction pipeline. Pro removes that limit and opens the advanced features.
Is there an Android version?
No. Sayo depends on Apple's on-device model, so it runs on iPhone and Apple Watch only.
0ARCH is a one-person software studio. These apps are what gets built between client projects, and they are where a pattern gets proven before it shows up in someone's production system. The same person who shipped this wrote the ERP that replaced a distributor's spreadsheets.