# SIS VHL vs BatLib

The clearest difference is update cadence: SIS VHL at every 10 months against BatLib's every 26 months. SIS VHL also leads on iOS requirement (11.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SIS VHL ships an update every 10 months, BatLib every 26 months. The most recent releases landed on September 18, 2026 and December 13, 2025 respectively.

## The numbers

| Metric | SIS VHL | BatLib |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 months** | Every 26 months |
| Size | 34 MB | 38 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CACI bv](https://appshunter.io/developer/961337312) | [Elekon AG](https://appshunter.io/developer/1591447845) |

## What reviewers say

### SIS VHL

[App page](https://appshunter.io/ios/app/sis-vhl/id1454211225)

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

**In-app purchases:** none


### BatLib

[App page](https://appshunter.io/ios/app/batlib/id6469684050)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SIS VHL free?

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

### Is BatLib free?

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

### Do SIS VHL or BatLib have ads?

Neither SIS VHL nor BatLib shows ads.

### Which is updated more often, SIS VHL or BatLib?

SIS VHL ships an update every 10 months, and BatLib every 26 months. Most recently, SIS VHL was updated on September 18, 2026 and BatLib on December 13, 2025.

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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.*