# Predictable Deutsch vs Knock Knock with Bato

The clearest difference is price: Knock Knock with Bato at $0.99 against Predictable Deutsch's $159.99. Knock Knock with Bato also leads on iOS requirement (12.0 vs 15.5). Predictable Deutsch's advantage is update cadence (every 2 months vs every 21 months). On ads, in-app purchases, monetization model and device support there is nothing between them.

Predictable Deutsch costs $159.99 and Knock Knock with Bato $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Predictable Deutsch ships an update every 2 months, Knock Knock with Bato every 21 months. The most recent releases landed on October 10, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Predictable Deutsch | Knock Knock with Bato |
| --- | --- | --- |
| Price | $159.99 | **$0.99** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/knock-knock-with-bato/id1064430008/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 21 months |
| Monetization | Paid | Paid |
| Size | 1.7 GB | 102 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Prentke Romich Company](https://appshunter.io/developer/474446992) | [OTATAA](https://appshunter.io/developer/928416622) |

## What reviewers say

### Predictable Deutsch

[App page](https://appshunter.io/ios/app/predictable-deutsch/id577387374)

This app assists individuals with communication challenges by offering text-to-speech capabilities. It features intelligent word prediction, customizable phrase organization, and integration with various tools to enhance communication speed and ease.

**Highlights:** Intelligent word prediction, Customizable phrase organization, Multilingual support (43 languages), Multiple access methods, Integration with ChatGPT and drawing tools, Customizable voice settings

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

**In-app purchases:** none


### Knock Knock with Bato

[App page](https://appshunter.io/ios/app/knock-knock-with-bato/id1064430008)

Help a little bat collect friends from their homes by guessing who lives behind each door based on sounds. This interactive game encourages children to develop listening skills, concentration, and creativity through music and playful animations.

**Highlights:** Guess friends based on sounds, Interactive music barn, Develop listening skills, Playful animations and clues, Discover 12 unique characters, 13 interactive scenes

**In-app purchases:** none


## Frequently asked questions

### Is Predictable Deutsch free?

Predictable Deutsch costs $159.99, with no in-app purchases.

### Is Knock Knock with Bato free?

Knock Knock with Bato costs $0.99, with no in-app purchases.

### Do Predictable Deutsch or Knock Knock with Bato have ads?

Neither Predictable Deutsch nor Knock Knock with Bato shows ads.

### Which is updated more often, Predictable Deutsch or Knock Knock with Bato?

Predictable Deutsch ships an update every 2 months, and Knock Knock with Bato every 21 months. Most recently, Predictable Deutsch was updated on October 10, 2026 and Knock Knock with Bato on October 8, 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.*