# RVV1990 vs KlankKr8 Op School

The clearest difference is price: KlankKr8 Op School at Free against RVV1990's $8.99. KlankKr8 Op School also leads on update cadence (monthly vs every 6 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

KlankKr8 Op School is free to download; RVV1990 costs $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

RVV1990 ships an update every 6 months, KlankKr8 Op School monthly. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | RVV1990 | KlankKr8 Op School |
| --- | --- | --- |
| Price | $8.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Size | 57 MB | 460 MB |
| Requires iOS | **12.3** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Verjo BV](https://appshunter.io/developer/670294042) | [RID](https://appshunter.io/developer/1507768954) |

## What reviewers say

### RVV1990

[App page](https://appshunter.io/ios/app/rvv1990/id670294039)

**In-app purchases:** none


### KlankKr8 Op School

[App page](https://appshunter.io/ios/app/klankkr8-op-school/id6447011591)

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

**In-app purchases:** none


## Frequently asked questions

### Is RVV1990 free?

RVV1990 costs $8.99, with no in-app purchases.

### Is KlankKr8 Op School free?

KlankKr8 Op School is free to download, with no in-app purchases.

### Do RVV1990 or KlankKr8 Op School have ads?

Neither RVV1990 nor KlankKr8 Op School shows ads.

### Which is updated more often, RVV1990 or KlankKr8 Op School?

RVV1990 ships an update every 6 months, and KlankKr8 Op School monthly. Most recently, RVV1990 was updated on October 10, 2026 and KlankKr8 Op School on October 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.*