# CISK vs Radical Technology

CISK and Radical Technology are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on June 1, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | CISK | Radical Technology |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | — |
| Size | 33 MB | 112 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [SPECTRUM COMPUTER AND MANAGEMENT CONSULTANCY PRIVATE LIMITED](https://appshunter.io/developer/948135840) | [Melimu Edutech Pvt Ltd](https://appshunter.io/developer/1295625580) |

## What reviewers say

### CISK

[App page](https://appshunter.io/ios/app/cisk/id1274500176)

This communication platform connects parents, teachers, and students with school updates. It offers real-time access to digital diaries, homework, attendance, and student performance via push notifications. The app provides a simple and efficient way to stay informed about school activities and student progress.

**Highlights:** Push notifications for school messages, Digital diary and homework access, Track attendance and student performance, Manage child/staff profiles, Send/receive mass and personalized messages, Message history and delivery tracking

**Features:** macOS Compatibility

**In-app purchases:** none


### Radical Technology

[App page](https://appshunter.io/ios/app/radical-technology/id6445942241)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CISK free?

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

### Is Radical Technology free?

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

### Do CISK or Radical Technology have ads?

Neither CISK nor Radical Technology shows ads.

### Which is updated more often, CISK or Radical Technology?

CISK ships an update every 3 months, and Radical Technology every 3 months. Most recently, CISK was updated on June 1, 2026 and Radical Technology on September 18, 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.*