# SIS vs SHIELDTECH by Redea Institute

The clearest difference is iOS requirement: SHIELDTECH by Redea Institute at 15.1 against SIS's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

SIS ships an update monthly, SHIELDTECH by Redea Institute every 2 weeks. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | SIS | SHIELDTECH by Redea Institute |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Size | 30 MB | 40 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [YAYASAN PENDIDIKAN ASIAN PASIFIK](https://appshunter.io/developer/1811065861) | [Yunardi Yunardi](https://appshunter.io/developer/1868302794) |

## What reviewers say

### SIS

[App page](https://appshunter.io/ios/app/sis-connect/id6745161349)

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

**In-app purchases:** none


### SHIELDTECH by Redea Institute

[App page](https://appshunter.io/ios/app/shieldtech-by-redea-institute/id6757688872)

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

**In-app purchases:** none


## Frequently asked questions

### Is SIS free?

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

### Is SHIELDTECH by Redea Institute free?

SHIELDTECH by Redea Institute is free to download, with no in-app purchases.

### Do SIS or SHIELDTECH by Redea Institute have ads?

Neither SIS nor SHIELDTECH by Redea Institute shows ads.

### Which is updated more often, SIS or SHIELDTECH by Redea Institute?

SIS ships an update monthly, and SHIELDTECH by Redea Institute every 2 weeks. Most recently, SIS was updated on October 30, 2026 and SHIELDTECH by Redea Institute on November 5, 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.*