When inspiration strikes, make it yours to keep.
AI can generate almost anything — but a fleeting spark belongs only to you. IdeaNook captures text, photos, and voice into private silicon memory on your iPhone. Offline capture, local AI, zero cloud.
iOS 26.0+ · Android coming soon
Every format, understood
Type, snap, or hold to talk — voice memos become searchable transcripts, photos get on-device semantic descriptions.
Dual-track on-device AI
Apple Intelligence on supported devices with zero download, or Gemma 4 E2B as a full offline fallback.
Privacy by design
No network permission. Data never leaves your phone — not even for AI inference.
As simple as texting yourself
When inspiration strikes, just send it. Text, photos, and voice all flow into one idea stream — each understood and preserved on your iPhone.
Jot it down
Send a thought the moment it arrives — natural as a chat, instantly searchable.
Snap what you see
From camera or library in one second. On-device AI generates a semantic description you can search and categorize.
Hold to talk, get a transcript
Hold to record, release to send. Speech-to-text runs on-device — transcripts appear in the bubble and are fully searchable.
Send and forget — AI files it for you
Text, voice transcripts, and image descriptions — all categorized on-device. No waiting, no data leaving your phone.
On supported devices, choose Apple Intelligence in Settings → AI Engine — no model download needed. On other devices, download Gemma once (~2.4 GB) to enable AI. See setup guide
Send
Write down any thought
Sorting
A “⏳ sorting” chip appears
Tagged
Turns into a real category tag
Browse
See all ideas of one kind
10 smart categories, all inferred locally
Text, voice, and photos — all in your digest
Richer summaries that weave together everything you captured. Every digest is generated on-device — the content never leaves your phone.
Automatic weekly digest
A Sunday-evening notification reminds you; reopen the app to auto-generate last week's review — text, transcripts, and image descriptions included.
Trigger anytime
Today, this week, or a custom range — generate a summary whenever you want.
Summarize from here to now
Long-press any message to build a tailored review spanning any time period.
An input bar redesigned for iOS 26
Built on iOS 26's native Liquid Glass — three elements flow and breathe as one. Hold to talk with live speech-to-text; the transcript lands right in your message bubble.
- Native .glassEffect() fluid material
- Text/voice modes switch with SF Symbol replace animation
- Hold to talk with on-device transcription in the bubble
Your thoughts stay on your phone
Privacy isn't a feature — it's the baseline. IdeaNook makes data leaks architecturally impossible.
Zero network requests
The app requests no network permission, so it simply cannot upload data.
Data never leaves
Everything lives in the app sandbox; even system backups stay under your control.
AI runs locally
Apple Intelligence or Gemma 4 E2B — whichever engine you choose, inference stays on your iPhone with no cloud API.
Minimal permissions
Photos write-only, microphone & camera on demand — used then released.
Dual-track, all on-device
Apple Intelligence when available, Gemma when needed — plus system Speech and Vision for transcription and image understanding. We keep the complexity so you get the smoothness.
Apple Intelligence path
Foundation Models for categorization and summaries — zero model download on supported devices.
Gemma 4 E2B offline fallback
Google's on-device multimodal LLM via LiteRT-LM — full AI on any compatible iPhone.
On-device speech-to-text
Apple Speech framework transcribes voice memos locally — language packs managed by iOS.
On-device image understanding
Vision analysis + local LLM generates semantic descriptions for your photos.
SwiftUI + SwiftData
An all-Apple native stack using the latest iOS 26 APIs, including Liquid Glass.
Local SwiftData sandbox
All data stays in the app sandbox, with optional encrypted iCloud backup.
Your inspiration, embodied
Capture comes first. Download IdeaNook — private silicon memory that lives only on your iPhone.