# KNX V2 vs RollerText 3

The clearest difference is in-app purchases: KNX V2 at none against RollerText 3's 4. KNX V2 also leads on iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. RollerText 3 sells 4 in-app purchases, starting at $0.49 per month. KNX V2 asks for nothing beyond the download.

## The numbers

| Metric | KNX V2 | RollerText 3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Size | 56 MB | 8 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Feller AG](https://appshunter.io/developer/525095492) | [Tomoyuki Okawa](https://appshunter.io/developer/421623755) |

## What reviewers say

### KNX V2

[App page](https://appshunter.io/ios/app/knx-v2/id1343197447)

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

**In-app purchases:** none


### RollerText 3

[App page](https://appshunter.io/ios/app/rollertext-3/id6748550297)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month Unlimited | $0.49 | per month |
| 3 months Unlimited | $1.99 | per 3 months |
| 6 months Unlimited | $2.99 | per 6 months |
| 1 year Unlimited | $4.99 | per year |


## Frequently asked questions

### Is KNX V2 free?

KNX V2 is free to download, with no in-app purchases.

### Is RollerText 3 free?

RollerText 3 is free to download, with in-app purchases available.

### Do KNX V2 or RollerText 3 have ads?

Neither KNX V2 nor RollerText 3 shows ads.

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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.*