# MERC. vs Prayer Latch

The clearest difference is in-app purchases: MERC. at none against Prayer Latch's 2. Prayer Latch's advantage is update cadence (every 3 days vs every 8 days). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Prayer Latch sells 2 in-app purchases, starting at $4.99 per month. MERC. asks for nothing beyond the download.

MERC. ships an update every 8 days, Prayer Latch every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | MERC. | Prayer Latch |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 days | **Every 3 days** |
| Size | 63 MB | 200 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 12+ |
| Developer | [RAIHAN SABBIR UDDIN](https://appshunter.io/developer/1841332235) | [Janus Works LLC](https://appshunter.io/developer/1865018597) |

## What reviewers say

### MERC.

[App page](https://appshunter.io/ios/app/merc/id6752851209)

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

**In-app purchases:** none


### Prayer Latch

[App page](https://appshunter.io/ios/app/prayer-latch-lock-app-blocker/id6812170110)

**Features:** iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prayer Latch Plus Monthly | $4.99 | per month |
| Prayer Latch Plus Yearly | $24.99 | per year |


## Frequently asked questions

### Is MERC. free?

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

### Is Prayer Latch free?

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

### Do MERC. or Prayer Latch have ads?

Neither MERC. nor Prayer Latch shows ads.

### Which is updated more often, MERC. or Prayer Latch?

MERC. ships an update every 8 days, and Prayer Latch every 3 days. Most recently, MERC. was updated on October 30, 2026 and Prayer Latch on October 31, 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.*