# SDIS vs H3 Pre

The clearest difference is update cadence: H3 Pre at weekly against SDIS's every 2 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.

SDIS ships an update every 2 months, H3 Pre weekly. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SDIS | H3 Pre |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/sdis/id1559355142/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 49 MB | 24 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Vaibhav Desai](https://appshunter.io/developer/1124773630) | [ADM Systems Private Limited](https://appshunter.io/developer/834792694) |

## What reviewers say

### SDIS

[App page](https://appshunter.io/ios/app/sdis/id1559355142)

This app provides parents with daily updates on their children's school activities, including attendance, homework, and important notices. It sends instant notifications for academic progress, circulars, and fee dues, allowing access to historical information.

**Highlights:** Daily attendance updates, Homework tracking, School notices and circulars, Event notifications, Fee due alerts, Historical information access

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

**In-app purchases:** none


### H3 Pre

[App page](https://appshunter.io/ios/app/h3-pre-school/id6443613553)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SDIS free?

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

### Is H3 Pre free?

H3 Pre is free to download, with no in-app purchases.

### Do SDIS or H3 Pre have ads?

Neither SDIS nor H3 Pre shows ads.

### Which is updated more often, SDIS or H3 Pre?

SDIS ships an update every 2 months, and H3 Pre weekly. Most recently, SDIS was updated on November 7, 2026 and H3 Pre on November 3, 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.*