# Leaf: Eco AI Chat — Private Offline LLM Assistant

> Private Offline LLM Assistant (iPhone/iPad app by Big Numbers, Inc..)

- Source: https://appshunter.io/ios/app/leaf-eco-ai-chat/id6757168284 (this page in markdown: same URL + `.md`)
- Developer: [Big Numbers, Inc.](https://appshunter.io/developer/1806217941)
- Category: Productivity, Utilities
- Price: Free
- Age rating: 17+
- Requires: iOS 26.0 · 7 MB
- Languages: American English
- Released: 2026-01-13
- Data updated: 2026-10-24

## What is Leaf?

Private, offline AI chat that lives entirely on your iPhone.

Leaf pairs a calm, botanical interface with Apple’s on-device Foundation Model so you can brainstorm, write, summarize notes, and work through code—even in Airplane Mode. No cloud servers. No accounts. No subscriptions.

WHY LEAF IS DIFFERENT

• 100% On-Device & Offline — Every prompt and response is generated locally on your iPhone using Apple Intelligence. Zero data leaves your device, and zero water or cloud data-center energy is used.
• 4-Layer Context & Memory Engine — Inspired by modern LLM memory systems, Leaf combines session context, long-term user memories, recent chat summaries, and a smart token-based sliding window so it remembers who you are across conversations.
• Transparent, Editable Memory — Leaf automatically learns your preferences, skills, and goals as you chat—or you can add, edit, and delete memories anytime in the built-in Memory & Context Inspector.
• Smart Cross-Chat Summaries — When you switch topics, Leaf summarizes past threads on-device so you can pick up right where you left off.
• No Account & No Subscription — Open Leaf and start chatting immediately. No sign-up, no email, no token paywalls, and no recurring fees.

BUILT FOR REAL WORK & EVERYDAY THINKING

• Summarize rough meeting or lecture notes into crisp checklists
• Draft warm, concise replies and emails without filler
• Debug code, compare architectures, and brainstorm weekend projects
• Pin important threads and inspect real-time token capacity at a glance

YOUR WORDS STAY YOURS

In a world of cloud AI that harvests conversations for training, Leaf takes a quieter, local-first approach. Your thoughts stay on your phone—we can’t read them, and we never will.

## Is Leaf safe?

Not enough ratings yet to assess Leaf.

## Is Leaf legit?

Leaf: Eco AI Chat appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Leaf is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 4 releases)

### 1.3 — 2026-10-20

Welcome to Leaf 1.3 — a calm, botanical redesign for private on-device AI:
• All-new warm sage-paper interface with unboxed editorial responses and fluid navigation
• Upgraded 4-layer Apple Intelligence context engine for sharper reasoning, memory personalization, and cross-chat recall
• Smarter automatic fact extraction and categorization in Memory
• Improved handling for model refusals and context limits so conversations stay smooth
• Starter prompts and faster session prewarming so you can jump right into a thought

### 1.2 — 2026-04-18

Updated chat system!

### 1.1 — 2026-01-15

Performance improvements and bug fixes!

### 1.0 — 2026-01-13

No release notes.

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| [Pallas Chat](https://appshunter.io/ios/app/pallas-chat/id6746582808) | — | Free | Productivity |
| [AI Offline LLM Chat: Lapis](https://appshunter.io/ios/app/ai-offline-llm-chat-lapis/id6754216427) | 2.3 (3) | Free | Productivity |
| [OmegaGPT - Offline AI Chat](https://appshunter.io/ios/app/omegagpt-offline-ai-chat/id6751235569) | 3.3 (3) | Free | Productivity |

## More apps by Big Numbers, Inc.

- [Blast Off: Boosted Board App](https://appshunter.io/ios/app/blast-off-boosted-board-app/id6744127495)
- [Big Numbers: Budget Tracker](https://appshunter.io/ios/app/big-numbers-budget-tracker/id6744486423)
- [Bia: Powerlifting Community](https://appshunter.io/ios/app/bia-powerlifting-community/id6752627186)
- [Next One's On Me: Tab Tracker](https://appshunter.io/ios/app/next-ones-on-me-tab-tracker/id6756637210)

All apps by Big Numbers, Inc.: https://appshunter.io/developer/1806217941

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-24.*