# WebEnv Scada vs LineKeeper

The clearest difference is in-app purchases: WebEnv Scada at none against LineKeeper's 1. LineKeeper's advantage is update cadence (every 4 days vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. LineKeeper sells 1 one-off in-app purchase. WebEnv Scada asks for nothing beyond the download.

WebEnv Scada ships an update every 2 months, LineKeeper every 4 days. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | WebEnv Scada | LineKeeper |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 days** |
| Size | 20 MB | 19 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Lifelan Technology Co.,Ltd.](https://appshunter.io/developer/1165308488) | [Oleksandr Makarov](https://appshunter.io/developer/6791371576) |

## What reviewers say

### WebEnv Scada

[App page](https://appshunter.io/ios/app/webenv-scada/id1579826967)

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

**In-app purchases:** none


### LineKeeper

[App page](https://appshunter.io/ios/app/linekeeper/id6791371574)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Write Unlock | $59.99 | one-time |


## Frequently asked questions

### Is WebEnv Scada free?

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

### Is LineKeeper free?

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

### Do WebEnv Scada or LineKeeper have ads?

Neither WebEnv Scada nor LineKeeper shows ads.

### Which is updated more often, WebEnv Scada or LineKeeper?

WebEnv Scada ships an update every 2 months, and LineKeeper every 4 days. Most recently, WebEnv Scada was updated on October 14, 2026 and LineKeeper on October 4, 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.*