# Redhill ATIS vs Chat LLM

Redhill ATIS and Chat LLM are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Redhill ATIS ships an update fortnightly, Chat LLM every 9 days. Both last shipped on October 12, 2026.

## The numbers

| Metric | Redhill ATIS | Chat LLM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Size | 5 MB | 26 MB |
| Requires iOS | **18.0** | 18.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Stefano Cislaghi](https://appshunter.io/developer/1606696294) | [David Picknell](https://appshunter.io/developer/1844054411) |

## What reviewers say

### Redhill ATIS

[App page](https://appshunter.io/ios/app/redhill-atis/id6744141393)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chat LLM

[App page](https://appshunter.io/ios/app/chat-llm/id6754822728)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Redhill ATIS free?

Redhill ATIS is free to download, with no in-app purchases.

### Is Chat LLM free?

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

### Do Redhill ATIS or Chat LLM have ads?

Neither Redhill ATIS nor Chat LLM shows ads.

### Which is updated more often, Redhill ATIS or Chat LLM?

Redhill ATIS ships an update fortnightly, and Chat LLM every 9 days. Most recently, Redhill ATIS was updated on October 12, 2026 and Chat LLM on October 12, 2026.

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