# Underlayer vs Palmi AI

The clearest difference is price: Underlayer at Free against Palmi AI's $2.99. Underlayer also leads on device support (3 vs 1) and iOS requirement (15.1 vs 26.1). Palmi AI's advantage is in-app purchases (none vs 1) and ads (none vs shown).

Underlayer is free to download; Palmi AI costs $2.99 up front. Underlayer sells 1 in-app purchase, starting at $2.99 per 7 days. Palmi AI asks for nothing beyond the download.

## The numbers

| Metric | Underlayer | Palmi AI |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | — |
| Size | 169 MB | 1.8 GB |
| Requires iOS | **15.1** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mihail Rukavishnikov](https://appshunter.io/developer/1648782212) | [昱鹏 洪](https://appshunter.io/developer/1883380915) |

## What reviewers say

### Underlayer

[App page](https://appshunter.io/ios/app/underlayer/id6753363956)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $2.99 | per 7 days |


### Palmi AI

[App page](https://appshunter.io/ios/app/palmi-ai/id6760237647)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Underlayer free?

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

### Is Palmi AI free?

Palmi AI costs $2.99, with no in-app purchases.

### Do Underlayer or Palmi AI have ads?

Underlayer shows ads; Palmi AI does not.

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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.*