# Shadow SISB vs abic

The clearest difference is update cadence: abic at weekly against Shadow SISB's every 6 months. 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.

Shadow SISB ships an update every 6 months, abic weekly. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Shadow SISB | abic |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Weekly** |
| Size | 28 MB | 7 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shadow alarma](https://appshunter.io/developer/1863790793) | [Diego Vega](https://appshunter.io/developer/1713615660) |

## What reviewers say

### Shadow SISB

[App page](https://appshunter.io/ios/app/shadow-sisb/id1587048800)

**Features:** macOS Compatibility

**In-app purchases:** none


### abic

[App page](https://appshunter.io/ios/app/abic/id6470395369)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Shadow SISB free?

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

### Is abic free?

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

### Do Shadow SISB or abic have ads?

Neither Shadow SISB nor abic shows ads.

### Which is updated more often, Shadow SISB or abic?

Shadow SISB ships an update every 6 months, and abic weekly. Most recently, Shadow SISB was updated on October 4, 2026 and abic on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*