# 21K School vs SILAS.

The clearest difference is update cadence: 21K School at monthly against SILAS.'s every 12 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.

21K School ships an update monthly, SILAS. every 12 months. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | 21K School | SILAS. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/21k-school-ecampus/id1600971333/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 12 months |
| Monetization | Free | — |
| Size | 27 MB | 44 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [21Kschool](https://appshunter.io/developer/1600971335) | [eReleGo Technologies Pvt Ltd](https://appshunter.io/developer/1516161345) |

## What reviewers say

### 21K School

[App page](https://appshunter.io/ios/app/21k-school-ecampus/id1600971333)

This app provides a secure online learning environment with virtual classrooms and AI-powered personalized education. It offers interactive sessions, AI-driven assessments, and detailed progress tracking to cater to individual student needs and career paths.

**Highlights:** Secure virtual classrooms, End-to-end encryption, AI-driven personalized learning, Interactive student sessions, AI-assisted assessments, Progress tracking and analytics

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

**In-app purchases:** none


### SILAS.

[App page](https://appshunter.io/ios/app/silas/id6477161488)

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

**In-app purchases:** none


## Frequently asked questions

### Is 21K School free?

21K School is free to download, with no in-app purchases.

### Is SILAS. free?

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

### Do 21K School or SILAS. have ads?

Neither 21K School nor SILAS. shows ads.

### Which is updated more often, 21K School or SILAS.?

21K School ships an update monthly, and SILAS. every 12 months. Most recently, 21K School was updated on November 3, 2026 and SILAS. on November 8, 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.*