# Vocabulary Builder · Palabring vs knowra

The clearest difference is update cadence: Vocabulary Builder · Palabring at every 2 weeks against knowra's every 7 months. Vocabulary Builder · Palabring also leads on iOS requirement (15.6 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Vocabulary Builder · Palabring sells 2 in-app purchases, starting at $4.99 per month and knowra sells 4 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Vocabulary Builder · Palabring ships an update every 2 weeks, knowra every 7 months. The most recent releases landed on November 8, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | Vocabulary Builder · Palabring | knowra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 7 months |
| Size | 39 MB | 11 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Aleksandr Subbotin](https://appshunter.io/developer/1759227161) | [瑞基 张](https://appshunter.io/developer/1862070303) |

## What reviewers say

### Vocabulary Builder · Palabring

[App page](https://appshunter.io/ios/app/vocabulary-builder-palabring/id6574508945)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $4.99 | per month |
| Pro Yearly | $49.99 | per year |


### knowra

[App page](https://appshunter.io/ios/app/knowra/id6756664484)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Monthly | $9.99 | per month |
| Pro Yearly | $99.00 | per year |
| Pro Yearly | $99.99 | per year |


## Frequently asked questions

### Is Vocabulary Builder · Palabring free?

Vocabulary Builder · Palabring is free to download, with in-app purchases available.

### Is knowra free?

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

### Do Vocabulary Builder · Palabring or knowra have ads?

Neither Vocabulary Builder · Palabring nor knowra shows ads.

### Which is updated more often, Vocabulary Builder · Palabring or knowra?

Vocabulary Builder · Palabring ships an update every 2 weeks, and knowra every 7 months. Most recently, Vocabulary Builder · Palabring was updated on November 8, 2026 and knowra on November 9, 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.*