# LEHMANN Smart Secure vs 小库存升级版

The clearest difference is update cadence: 小库存升级版 at weekly against LEHMANN Smart Secure's every 6 weeks. LEHMANN Smart Secure's advantage is iOS requirement (8.0 vs 16.6). On price, ads, 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 小库存升级版 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

LEHMANN Smart Secure ships an update every 6 weeks, 小库存升级版 weekly. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | LEHMANN Smart Secure | 小库存升级版 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Size | 4 MB | 27 MB |
| Requires iOS | **8.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lehmann Vertriebsges. mbH & Co. KG](https://appshunter.io/developer/980603055) | [忠和 朱](https://appshunter.io/developer/693145014) |

## 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 |


### 小库存升级版

[App page](https://appshunter.io/ios/app/id1425757719)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月度费用 | $1.99 | one-time |
| 年度费用 | $13.99 | one-time |
| 年度费用 | $19.99 | one-time |


## Frequently asked questions

### Is LEHMANN Smart Secure free?

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

### Is 小库存升级版 free?

小库存升级版 is free to download, with in-app purchases available.

### Do LEHMANN Smart Secure or 小库存升级版 have ads?

Neither LEHMANN Smart Secure nor 小库存升级版 shows ads.

### Which is updated more often, LEHMANN Smart Secure or 小库存升级版?

LEHMANN Smart Secure ships an update every 6 weeks, and 小库存升级版 weekly. Most recently, LEHMANN Smart Secure was updated on October 2, 2026 and 小库存升级版 on October 1, 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.*