# Shadow SISB vs FAST TRACKER

The clearest difference is update cadence: FAST TRACKER at every 5 weeks 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, FAST TRACKER every 5 weeks. The most recent releases landed on September 17, 2026 and May 19, 2026 respectively.

## The numbers

| Metric | Shadow SISB | FAST TRACKER |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Size | 28 MB | 62 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shadow alarma](https://appshunter.io/developer/1863790793) | [Daniel Chavarria Ospina](https://appshunter.io/developer/1579035297) |

## What reviewers say

### Shadow SISB

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

**Features:** macOS Compatibility

**In-app purchases:** none


### FAST TRACKER

[App page](https://appshunter.io/ios/app/fast-tracker/id6466875773)

**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 FAST TRACKER free?

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

### Do Shadow SISB or FAST TRACKER have ads?

Neither Shadow SISB nor FAST TRACKER shows ads.

### Which is updated more often, Shadow SISB or FAST TRACKER?

Shadow SISB ships an update every 6 months, and FAST TRACKER every 5 weeks. Most recently, Shadow SISB was updated on September 17, 2026 and FAST TRACKER on May 19, 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.*