# Relay Check vs PULAO ECHO

The clearest difference is in-app purchases: Relay Check at none against PULAO ECHO's 6. PULAO ECHO's advantage is update cadence (every 4 days vs every 2 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. PULAO ECHO sells 6 one-off in-app purchases. Relay Check asks for nothing beyond the download.

Relay Check ships an update every 2 months, PULAO ECHO every 4 days. The most recent releases landed on September 21, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Relay Check | PULAO ECHO |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 7 MB | 146 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [JAMF Software](https://appshunter.io/developer/290965542) | [PULAO ECHO TECHNOLOGY (HONG KONG) CO., LIMITED](https://appshunter.io/developer/1870799553) |

## What reviewers say

### Relay Check

[App page](https://appshunter.io/ios/app/relay-check/id6742145178)

**Features:** Vision Pro support

**In-app purchases:** none


### PULAO ECHO

[App page](https://appshunter.io/ios/app/pulao-echo/id6758084401)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 120 Minutes Transcription Add-on | $2.00 | one-time |
| 600 Minutes Transcription Add-on | $4.00 | one-time |
| 1200 Minutes Transcription Add-on | $6.00 | one-time |
| 10M AI Token | $6.90 | one-time |
| Monthly Plan | $6.99 | one-time |
| Annual Plan | $69.99 | one-time |


## Frequently asked questions

### Is Relay Check free?

Relay Check is free to download, with no in-app purchases.

### Is PULAO ECHO free?

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

### Do Relay Check or PULAO ECHO have ads?

Neither Relay Check nor PULAO ECHO shows ads.

### Which is updated more often, Relay Check or PULAO ECHO?

Relay Check ships an update every 2 months, and PULAO ECHO every 4 days. Most recently, Relay Check was updated on September 21, 2026 and PULAO ECHO on September 13, 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.*