# LocalEngine — Private on-device AI runtime

> On-device AI runtime for private, offline language and vision model interaction. (iPhone/iPad app by GUOYU WANG.)

- Source: https://appshunter.io/ios/app/localengine/id6779024828 (this page in markdown: same URL + `.md`)
- Developer: [GUOYU WANG](https://appshunter.io/developer/1873302677)
- Category: Productivity, Developer Tools
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 17.0 · 44 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan)
- Released: 2026-06-25
- Data updated: 2026-11-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/localengine/id6779024828/reviews.md

## What is LocalEngine?

LocalEngine runs open-source AI language models entirely on your iPhone and iPad. Everything happens on-device: your prompts, conversations, and images never leave your device and are never sent to any server.

Built in pure Swift with SwiftUI, LocalEngine runs models through a Metal-accelerated llama.cpp engine, so you get fast, low-latency AI completely offline — no account, no sign-in, no cloud.

WHAT YOU CAN DO

• Chat — Hold multi-turn conversations with a local model. Replies stream token-by-token in real time. Start a new chat or stop a response at any time.

• See images — Turn on vision in Settings, attach photos to your message, and ask about them. Images are understood entirely on-device by a vision-capable model.

• Download models — Browse a curated catalog of open models and download the one that fits your device. Downloads run as resumable background jobs with live progress, and the screen can stay awake while a large model downloads.

• Tune generation — Adjust the response length (max tokens) and the temperature to shape how the model replies.

• Unlock larger models — LocalEngine is free to use with starter models. A one-time Pro upgrade unlocks larger catalog downloads on iPhone and iPad.

CURATED MODELS

LocalEngine is ready to chat out of the box with a small, fast default model, and its catalog includes compact vision-language models you can grow into:

• Qwen3.5 — 0.8B and 2B free, with 4B available through Pro
• Gemma 4 — E2B free, with E4B available through Pro

Smaller models are quick and light on storage; larger Pro models are more capable on newer devices. Each vision model pairs with a multimodal projector so it can understand images — all on-device.

PRIVATE BY DESIGN

• 100% on-device inference — no cloud, no telemetry, no analytics.
• No account and no sign-in required.
• Runs fully offline once a model is downloaded.
• Built to App Store privacy and security standards.

REQUIREMENTS

• iOS / iPadOS 17.0 or later
• A recent iPhone or iPad is recommended, especially for the larger models
• Free storage space for the models you choose to download

LocalEngine puts the power of modern AI — text and vision — in your pocket, without giving up your privacy.

## Key features

- On-device AI inference
- Offline conversations
- Image analysis
- Model catalog download
- Customizable generation settings
- Private by design

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Professional | $9.99 | one-time |
| Local Engine Pro | $2.99 | one-time |
| LocalEngine Pro | $4.99 | one-time |


## Is LocalEngine safe?

Not enough ratings yet to assess LocalEngine.

## Is LocalEngine legit?

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

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/localengine/id6779024828/reviews.md

### 4/5 — It’s a great app,

*2026-10-28*

The only reason I didn’t put 5/5 stars, is I can’t seem to figure out how to import gguf files, even though it says I can,

## Frequently asked questions about LocalEngine

### What is LocalEngine?

LocalEngine is a productivity app that allows you to run open-source AI language and vision models entirely on your iPhone and iPad. It prioritizes privacy by keeping all data on-device and operating offline.

### Does LocalEngine have ads?

No, LocalEngine does not contain advertisements. It is built to App Store privacy and security standards and operates fully offline once models are downloaded.

### How much does LocalEngine cost?

LocalEngine is free to use with starter models. A one-time Pro upgrade is available to unlock larger model downloads on iPhone and iPad.

### What devices support LocalEngine?

LocalEngine is available on iPhone and iPad, requiring iOS/iPadOS 17.0 or later. A recent device is recommended for larger models.

### Can I use LocalEngine offline?

Yes, LocalEngine is designed to run fully offline once you have downloaded the desired AI models. Your prompts and conversations never leave your device.

### How do I download models in LocalEngine?

You can browse a curated catalog of open-source models within LocalEngine and download them. Downloads are resumable background jobs with live progress indicators.

### What age rating is LocalEngine?

LocalEngine has an age rating of 12+, indicating it is suitable for users aged 12 and older.

### How often is LocalEngine updated?

The latest version of LocalEngine is 0.7.0, last updated on October 29, 2026. Updates typically focus on improving performance and expanding model compatibility.

## Version history (last 5 releases)

### 0.7.1 — 2026-11-07

• Updated on-device engine.
• Fixed an issue where LFM and Qwen 3.5 models could carry over text from a previous conversation into a new one.

Everything still runs 100% on-device — no account, no cloud, no telemetry.

### 0.7.0 — 2026-10-29

• LFM3 1.7B — Liquid AI's compact multilingual model that thinks before it answers. Free, 1.1 GB download.
• LFM3-VL 2B — ask questions about your photos and images. Free, about 1.3 GB download.
• Updated on-device engine with support for the latest model architectures.

Everything still runs 100% on-device — no account, no cloud, no telemetry.

### 0.6.8 — 2026-10-24

Version 0.6.8

• Spark X2.6 4B — a compact English and Chinese model for coding, agent and long-context tasks. It thinks before it answers. 3.8 GB download, best on newer iPhone and iPad models.

Everything still runs 100% on-device — no account, no cloud, no telemetry.

### 0.6.7 — 2026-10-23

• Example prompts — a new chat now offers ready-made prompts for everyday tasks: summarize, translate, rewrite, explain code, draft an email, write meeting minutes. Tap "All prompts" for 20 templates across writing, language, data, coding and work.
• Fill in a short form and start the chat. Long fields can be filled straight from a file, including text, Markdown and PDF.
• Prompts follow the app language, in all 10 supported languages.
• The app warns you before sending when the input is too long for the current model.
• Support iPhone Duo.

Everything still runs 100% on-device — no account, no cloud, no telemetry.

### 0.6.6 — 2026-10-21

Version 0.6.6

• Example prompts — a new chat now offers ready-made prompts for everyday tasks: summarize, translate, rewrite, explain code, draft an email, write meeting minutes. Tap "All prompts" for 20 templates across writing, language, data, coding and work.
• Fill in a short form and start the chat. Long fields can be filled straight from a file, including text, Markdown and PDF.
• Prompts follow the app language, in all 10 supported languages.
• The app warns you before sending when the input is too long for the current model.

Everything still runs 100% on-device — no account, no cloud, no telemetry.

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## More apps by GUOYU WANG

- [PrivyMermaid: AI Diagram](https://appshunter.io/ios/app/privymermaid-ai-diagram/id6758518978)
- [FlightLedger](https://appshunter.io/ios/app/flightledger/id6758533176)
- [PrivyPDF: PDF Agent](https://appshunter.io/ios/app/privypdf-pdf-agent/id6758668283)
- [PrivyFeed: News Butler](https://appshunter.io/ios/app/privyfeed-news-butler/id6758854675)
- [PrivyMermaid Pro: AI Diagram](https://appshunter.io/ios/app/privymermaid-pro-ai-diagram/id6759026916)
- [Tenmo](https://appshunter.io/ios/app/tenmo/id6759307802)

All apps by GUOYU WANG: https://appshunter.io/developer/1873302677

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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 2026-11-10.*