# Atomic Chat vs Lockdeo

The clearest difference is in-app purchases: Atomic Chat at none against Lockdeo's 2. Atomic Chat also leads on iOS requirement (16.2 vs 26.0). Lockdeo's advantage is update cadence (every 5 days vs fortnightly). On price, ads and device support there is nothing between them.

Both are free to download. Lockdeo sells 2 in-app purchases, starting at $1.99 per month. Atomic Chat asks for nothing beyond the download.

Atomic Chat ships an update fortnightly, Lockdeo every 5 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Atomic Chat | Lockdeo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (12 ratings)](https://appshunter.io/ios/app/atomic-chat-private-local-ai/id6761720226/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free | — |
| Size | 84 MB | 3 MB |
| Requires iOS | **16.2** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 9+ | 4+ |
| Developer | [Atomic Mail](https://appshunter.io/developer/1831027051) | [世杰 戴](https://appshunter.io/developer/1896061356) |

## What reviewers say

### Atomic Chat

[App page](https://appshunter.io/ios/app/atomic-chat-private-local-ai/id6761720226)

This AI assistant runs entirely on your device, offering complete privacy and offline functionality. It allows you to ask questions, brainstorm ideas, draft content, and more without needing an internet connection or an account.

**Highlights:** 100% on-device AI processing, Complete privacy, no cloud servers, Offline functionality, No account or sign-up required, Choose from curated language models, Optimized for Apple Silicon

**In-app purchases:** none


### Lockdeo

[App page](https://appshunter.io/ios/app/lockdeo/id6793459122)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $1.99 | per month |
| Lifetime Subscription | $3.99 | one-time |


## Frequently asked questions

### Is Atomic Chat free?

Atomic Chat is free to download, with no in-app purchases.

### Is Lockdeo free?

Lockdeo is free to download, with in-app purchases available.

### Do Atomic Chat or Lockdeo have ads?

Neither Atomic Chat nor Lockdeo shows ads.

### Which is updated more often, Atomic Chat or Lockdeo?

Atomic Chat ships an update fortnightly, and Lockdeo every 5 days. Most recently, Atomic Chat was updated on October 24, 2026 and Lockdeo on October 25, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*