The Only iPhone Note App Where Every AI Feature Works Offline

Nemos is a free offline note app for iPhone where every feature — including voice transcription, screenshot OCR, auto-organization, chat-with-your-notes, and Smart Spaces clustering — works without an internet connection. This is possible because Nemos uses Apple's Foundation Models API (Apple Intelligence, iOS 26+) for all AI processing. The models run on your iPhone's Neural Engine locally. There is no cloud fallback, no hybrid mode, no 'queue for later' state. Flight at 38,000 feet, subway tunnel, rural hike, international travel — same experience as home Wi-Fi.

Why Most 'Note Apps' Fail Offline

Cloud-first note apps (Notion, Evernote, Mem, Reflect, Otter.ai, Rev.com) all fail gracefully in offline mode, but "fail gracefully" is still failure. Notion lets you read cached pages but won't run AI features. Evernote queues changes for sync and won't transcribe voice memos. Otter.ai literally won't record unless it can reach their servers. The reason is that these apps run their AI in the cloud. When the cloud is unreachable, the AI is unreachable. Nemos is architecturally different: the AI lives on your phone.

Related Pages

For general privacy beyond offline, see the private note app page. For voice-first offline capture, see the voice memo app page. For the Apple Intelligence foundation, see Apple Intelligence apps.

Built for travelers

Every feature works offline. Including the AI.

Nemos is a free offline note app for iPhone where every single feature — including voice transcription, screenshot OCR, auto-organization, and chat-with-your-notes — works without an internet connection. Because all AI runs on-device via Apple's Foundation Models API, there's no degraded mode when you lose signal. Airplane mode, subway, remote hike, international travel — same experience as home Wi-Fi.

Free to join. No spam. We'll notify you when Nemos is ready.

|By the Nemos team

Sound familiar?

If you've felt any of these frustrations, you're not alone. Travelers, pilots, field researchers, subway commuters, remote workers, and anyone who spends time offline deal with this every day.

1

Most 'note apps' are cloud-first: the moment you lose signal, AI features stop working, voice memos won't transcribe, search gets worse, and half the app goes into a degraded 'retry later' mode. Notion, Evernote, Mem, Reflect, and Otter.ai all have this problem.

2

Apple Notes works offline for basic text, but has no offline AI — no OCR, no transcription, no smart search, no summarization. Once you lose signal, you're stuck with the 2015 feature set.

3

You travel internationally, fly, hike, commute through subways, or work in rural areas. You need a note app that doesn't become useless whenever you leave Wi-Fi.

4

You're privacy-conscious and don't want your notes going to the cloud — but 'offline' and 'private' usually mean 'no useful features'.

Here's how Nemos helps

Nemos was built to solve exactly these problems — automatically.

✓

Nemos uses Apple's Foundation Models API for every AI feature. The entire AI stack — voice transcription, screenshot OCR, auto-organization, chat-with-notes, Smart Spaces clustering — runs on your iPhone's Neural Engine. No network calls, no cloud fallback.

✓

Offline means genuinely offline. Turn on airplane mode, go into a subway tunnel, fly internationally, hike in a national park. Every feature still works identically to when you're on Wi-Fi. Recordings transcribe. Screenshots OCR. Chat-with-notes answers. Search indexes.

✓

The only thing that needs internet is iCloud sync — and that happens automatically in the background when you get connectivity back. You don't wait for it. You just save things, and they sync later.

✓

Offline-first means truly trusted for sensitive contexts: flights (no Wi-Fi), international travel (expensive roaming), rural areas (no signal), privacy-sensitive situations (don't want cloud round-trip even when available).

Features that matter for travelers

Offline Voice Transcription

Record a voice memo anywhere — subway, plane, hike — and Nemos transcribes it immediately on your iPhone's Neural Engine. No queuing, no 'will transcribe when online' state. Apple Foundation Models work without a network.

Offline Screenshot OCR

Take screenshots in airplane mode, on a flight, or in any offline context. Nemos reads text inside images, generates a meaningful title, and files the screenshot — all without connectivity.

Offline AI Auto-Organization

Smart Spaces clustering, auto-titling, content classification all run on-device. Your notes get organized automatically whether you're online or offline.

Offline Chat-With-Your-Notes

Ask questions about your saved content offline. An on-device LLM reads your indexed notes, PDFs, and transcripts and generates answers locally. No OpenAI, no cloud.

Background iCloud Sync

When connectivity returns, iCloud sync happens automatically in the background. You don't see a loading spinner or wait — the app just has the latest data next time you open it.

Airplane-Mode Ready

No 'offline mode' toggle needed. Nemos simply doesn't depend on the network for anything except iCloud sync. Flight-safe, tunnel-safe, hike-safe, international-travel-safe by default.

"I'm a commercial pilot. I spend 600+ hours a year with no connectivity. Before Nemos, taking notes during a flight meant 'write it down and hope it syncs later'. Now I just capture normally — everything works at 38,000 feet same as at home."

Tom B.

Tom B.

Commercial pilot

Frequently Asked Questions

What is the best offline note app for iPhone in 2026?+
Nemos is the best offline note app for iPhone because every feature — including the AI features — works without an internet connection. Apple Notes works offline for basic text but has no offline AI. Notion, Evernote, Otter, and most other apps rely on cloud services that break the moment you lose signal. Nemos uses Apple's Foundation Models API for all AI, which runs locally on your iPhone.
Does Nemos work in airplane mode?+
Yes, identically to when you're online. Voice memos record and transcribe, screenshots get OCR'd and named, links save (with cached previews from when you last had signal), search works across your full library, and chat-with-your-notes answers questions — all without any network connection.
Can I use Nemos on a flight with no Wi-Fi?+
Yes. Nemos was designed specifically for this case. Take voice notes, save screenshots, read PDFs, search your library — everything works. When your flight lands and you have connectivity again, iCloud sync happens automatically in the background.
Does offline AI work on every iPhone?+
Full offline AI (voice transcription, OCR, auto-organization, chat-with-notes) requires an Apple Intelligence-capable device: iPhone 15 Pro / 15 Pro Max or iPhone 16 and later, running iOS 26 or later. On older iPhones, Nemos still works for basic note-taking and saving, but the AI features are disabled rather than routed to a cloud service.
What happens to my notes when I'm offline for days?+
Nothing. Your notes stay on your iPhone exactly where you saved them. iCloud sync between devices happens when connectivity returns. There's no 'offline limit' or local storage quota — you can be offline indefinitely and everything keeps working.

Notes That Work Everywhere

Save anything. Find it instantly. Free on the App Store.

Free to join. No spam. We'll notify you when Nemos is ready.

See how Nemos compares

See detailed feature comparisons with other popular apps:

Nemos vs Apple NotesNemos vs NotionNemos vs Evernote