Product Spotlight
Turn your voice into structured knowledge
NoteWhisper captures voice recordings and transforms them into searchable, organized notes with AI-powered transcription, smart summaries and flexible output formats.
- Year
- 2024 – Present
- Platform
- iOS & watchOS
- Role
- Design, Engineering, AI
Voice notes are broken
You record a meeting, a quick idea or a brainstorming session. Then what? The recording sits in your phone, unsearchable and unusable. Scrubbing through 45 minutes of audio to find one detail isn't a workflow. it's a punishment.
Voice is the fastest way to capture ideas. But raw recordings are worthless without structure. NoteWhisper bridges that gap.
What we built
An AI-native voice-to-notes app for iPhone and Apple Watch
- Swift 6 / SwiftUI
- gpt-4o-transcribe
- GPT-4.1
- Modal
- Next.js API
- CloudFlare R2
- RevenueCat
AI Transcription
Every word captured, every speaker identified
Powered by OpenAI's gpt-4o-transcribe, NoteWhisper delivers accurate transcription across 50+ languages. Speaker diarization distinguishes who said what and custom dictionaries handle your domain-specific terminology.
Recordings up to 90 minutes are processed through our server-side pipeline, returning structured transcripts in seconds.
Smart Summaries
From raw speech to polished output
GPT-4.1 generates concise summaries from your transcriptions. distilling key points, action items and decisions from even the longest recordings.
Need a different format? Reformat any transcription into a blog post, professional email, meeting minutes or social media thread with a single tap.
Full Ecosystem
Record anywhere, access everywhere
Start a recording on your Apple Watch during a walk, review the transcription on your iPhone and paste the summary into an email with the keyboard extension. NoteWhisper fits into how you already work.
Live Activities keep your recording visible and webhook integrations push notes to Notion, Slack or any tool in your stack.
Built for real work
NoteWhisper is designed around the features that matter for daily use.
- Languages supported
- 50+
- Max recording duration
- 90 min
- Platforms (iPhone, Watch, Keyboard)
- 3
- Output format styles
- 6
Search & Organization
Find notes by meaning, not keywords
Semantic search powered by AI lets you find notes based on what they're about, not just exact words. Search “budget discussion” and find that recording where someone mentioned Q4 revenue targets.
Auto-categorization sorts your notes into customizable categories. Meetings, Ideas, Journal, Work. so everything has a place without manual filing.
Architecture
Native client, server-side AI
NoteWhisper is a fully native Swift 6 app built with SwiftUI and strict concurrency. Audio is recorded on-device, uploaded to our processing pipeline via a Next.js API layer and returned as structured data.
The AI pipeline chains gpt-4o-transcribe for transcription with GPT-4.1, running on Modal for GPU compute, for summarization, speaker identification and format transformation. Audio is stored temporarily on CloudFlare R2, processed, then deleted.
Swift 6
Native iOS
SwiftUI
UI Framework
4o-transcribe
Transcription
GPT-4.1
Intelligence
Modal
GPU Compute
Next.js
API Layer
R2
Object Storage
Try NoteWhisper
Available on the App Store for iPhone and Apple Watch. Free to start, Pro for power users.
Work with us
Want us to build something like this for your business? Let's talk about your project.