# BETA Smart vs Underlayer

The clearest difference is in-app purchases: BETA Smart at none against Underlayer's 1. BETA Smart also leads on ads (none vs shown). Underlayer's advantage is update cadence (every 5 months vs every 11 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Underlayer sells 1 in-app purchase, starting at $2.99 per 7 days. BETA Smart asks for nothing beyond the download.

BETA Smart ships an update every 11 months, Underlayer every 5 months. Both last shipped on October 16, 2026.

## The numbers

| Metric | BETA Smart | Underlayer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 11 months | **Every 5 months** |
| Size | 224 MB | 169 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [BETA CORPORATION PTY LTD](https://appshunter.io/developer/1835258414) | [Mihail Rukavishnikov](https://appshunter.io/developer/1648782212) |

## What reviewers say

### BETA Smart

[App page](https://appshunter.io/ios/app/beta-smart/id6751463685)

**Features:** Apple Watch app

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is BETA Smart free?

BETA Smart is free to download, with no in-app purchases.

### Is Underlayer free?

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

### Do BETA Smart or Underlayer have ads?

Underlayer shows ads; BETA Smart does not.

### Which is updated more often, BETA Smart or Underlayer?

BETA Smart ships an update every 11 months, and Underlayer every 5 months. Most recently, BETA Smart was updated on October 16, 2026 and Underlayer on October 16, 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.*