# LEHMANN Smart Secure vs Boost Cleaner

The clearest difference is ads: LEHMANN Smart Secure at none against Boost Cleaner's shown. LEHMANN Smart Secure also leads on iOS requirement (8.0 vs 16.0). Boost Cleaner's advantage is update cadence (every 8 days vs every 6 weeks). On price, in-app purchases and device support there is nothing between them.

Both are free to download. LEHMANN Smart Secure sells 3 one-off in-app purchases and Boost Cleaner sells 2 in-app purchases, starting at $9.99 per 7 days. Whichever you choose, the download price is not the number that matters.

LEHMANN Smart Secure ships an update every 6 weeks, Boost Cleaner every 8 days. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | LEHMANN Smart Secure | Boost Cleaner |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 8 days** |
| Size | 4 MB | 33 MB |
| Requires iOS | **8.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lehmann Vertriebsges. mbH & Co. KG](https://appshunter.io/developer/980603055) | [Emiliya LTD](https://appshunter.io/developer/1763812031) |

## What reviewers say

### LEHMANN Smart Secure

[App page](https://appshunter.io/ios/app/lehmann-smart-secure/id980603056)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Administration | $0.99 | one-time |
| Comfort | $1.99 | one-time |
| Group | $1.99 | one-time |


### Boost Cleaner

[App page](https://appshunter.io/ios/app/boost-cleaner-boost-and-clean/id6780785390)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $9.99 | per 7 days |
| Premium Yearly | $59.99 | per year |


## Frequently asked questions

### Is LEHMANN Smart Secure free?

LEHMANN Smart Secure is free to download, with in-app purchases available.

### Is Boost Cleaner free?

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

### Do LEHMANN Smart Secure or Boost Cleaner have ads?

Boost Cleaner shows ads; LEHMANN Smart Secure does not.

### Which is updated more often, LEHMANN Smart Secure or Boost Cleaner?

LEHMANN Smart Secure ships an update every 6 weeks, and Boost Cleaner every 8 days. Most recently, LEHMANN Smart Secure was updated on October 26, 2026 and Boost Cleaner on October 25, 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.*