# Pro Osteo vs Klasbord Ouderapp

The clearest difference is in-app purchases: Pro Osteo at none against Klasbord Ouderapp's 1. Klasbord Ouderapp's advantage is update cadence (monthly vs every 7 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Klasbord Ouderapp sells 1 one-off in-app purchase. Pro Osteo asks for nothing beyond the download.

Pro Osteo ships an update every 7 months, Klasbord Ouderapp monthly. The most recent releases landed on October 26, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Pro Osteo | Klasbord Ouderapp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (13 ratings)](https://appshunter.io/ios/app/klasbord-ouderapp/id1437881961/reviews)** |
| Number of ratings | — | **13** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | — | Free |
| Size | 66 MB | 53 MB |
| Requires iOS | 15.5 | **15.4** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Panta Rhei Opleidingen B.V.](https://appshunter.io/developer/1484811979) | [web2work](https://appshunter.io/developer/777672815) |

## What reviewers say

### Pro Osteo

[App page](https://appshunter.io/ios/app/pro-osteo/id950070129)

**Features:** Vision Pro support

**In-app purchases:** none


### Klasbord Ouderapp

[App page](https://appshunter.io/ios/app/klasbord-ouderapp/id1437881961)

Stay updated on your child's school activities and communications. This app allows parents to receive timeline messages, manage group chats, sign up for events, and report absences. It provides a direct line to the school for important information and updates.

**Highlights:** Receive timeline messages (text, photos, documents), Group and one-on-one messaging, Sign up for school events and parent-teacher meetings, Report child absences, View school calendar and shared links, Direct contact with school via phone, email, website, Push notifications for updates

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus-account | $3.99 | one-time |


## Frequently asked questions

### Is Pro Osteo free?

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

### Is Klasbord Ouderapp free?

Klasbord Ouderapp is free to download, with in-app purchases available.

### Do Pro Osteo or Klasbord Ouderapp have ads?

Neither Pro Osteo nor Klasbord Ouderapp shows ads.

### Which is updated more often, Pro Osteo or Klasbord Ouderapp?

Pro Osteo ships an update every 7 months, and Klasbord Ouderapp monthly. Most recently, Pro Osteo was updated on October 26, 2026 and Klasbord Ouderapp on November 2, 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.*