# Knowtifs vs Bluuub

The clearest difference is in-app purchases: Knowtifs at none against Bluuub's 2. Bluuub's advantage is ads (none vs shown) and update cadence (every 9 days vs every 7 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Bluuub sells 2 in-app purchases, starting at $7.99 per month. Knowtifs asks for nothing beyond the download.

Knowtifs ships an update every 7 months, Bluuub every 9 days. The most recent releases landed on October 20, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Knowtifs | Bluuub |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/bluuub/id6758102697/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 7 months | **Every 9 days** |
| Monetization | — | Free |
| Size | 24 MB | 86 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [M Services GmbH](https://appshunter.io/developer/1396477404) | [The Ginger Collective Limited](https://appshunter.io/developer/1808152864) |

## What reviewers say

### Knowtifs

[App page](https://appshunter.io/ios/app/knowtifs/id6744073812)

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

**In-app purchases:** none


### Bluuub

[App page](https://appshunter.io/ios/app/bluuub/id6758102697)

This app bridges the gap between beginner and intermediate language learners by focusing on real conversation practice. It offers personalized feedback and exercises based on individual struggles, helping users move beyond basic interactions to true connection.

**Highlights:** AI conversational partner, Personalized feedback, Dynamic story generation, Managed flashcards, Learn in your mother tongue

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bluuub Pro | $7.99 | per month |
| Bluuub Pro | $79.99 | per year |


## Frequently asked questions

### Is Knowtifs free?

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

### Is Bluuub free?

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

### Do Knowtifs or Bluuub have ads?

Knowtifs shows ads; Bluuub does not.

### Which is updated more often, Knowtifs or Bluuub?

Knowtifs ships an update every 7 months, and Bluuub every 9 days. Most recently, Knowtifs was updated on October 20, 2026 and Bluuub on October 6, 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.*