# Japer AI vs Control Shrimp

The clearest difference is in-app purchases: Control Shrimp at none against Japer AI's 10. Control Shrimp also leads on ads (none vs shown) and update cadence (daily vs every 2 weeks). On price and device support there is nothing between them.

Both are free to download. Japer AI sells 10 in-app purchases, starting at $6.99 per 7 days. Control Shrimp asks for nothing beyond the download.

Japer AI ships an update every 2 weeks, Control Shrimp daily. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Japer AI | Control Shrimp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (570 ratings)](https://appshunter.io/ios/app/japer-ai-writbot/id1671151816/reviews)** | — |
| Number of ratings | **570** | — |
| Positive reviews | 72.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 35 MB | 42 MB |
| Requires iOS | 16.0 | **14.0.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Subhan Dastgeer](https://appshunter.io/developer/1722914219) | [Miguel Bustamante Feijoo](https://appshunter.io/developer/1785793990) |

## What reviewers say

### Japer AI

[App page](https://appshunter.io/ios/app/japer-ai-writbot/id1671151816)

This AI-powered writing assistant helps generate various content types, from essays and emails to marketing copy. It offers tools to rewrite, expand, or summarize text, brainstorm ideas, and provides over 70 templates for different writing needs. An integrated AI chat assists with refining content and answering writing-related questions.

**Highlights:** AI content generation, Email and essay writing, Marketing copy creation, Text rewriting and summarization, Idea brainstorming, Over 70 writing templates, AI chat assistant

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Pro | $6.99 | per 7 days |
| Weekly Pro | $6.99 | per 7 days |
| WritBot Premium Access | $7.99 | per month |
| WritBot Premium Access | $9.99 | per month |
| WritBot Premium Access | $11.99 | per month |
| Yearly Plan (Discounted) | $29.99 | per year |
| WritBot Premium | $39.99 | per year |
| WritBot Yearly Access | $39.99 | per year |
| WritBot Premium Access | $40.00 | per year |
| WritBot Premium Access | $59.99 | per year |


### Control Shrimp

[App page](https://appshunter.io/ios/app/control-shrimp/id6739515324)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Japer AI free?

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

### Is Control Shrimp free?

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

### Do Japer AI or Control Shrimp have ads?

Japer AI shows ads; Control Shrimp does not.

### Which is updated more often, Japer AI or Control Shrimp?

Japer AI ships an update every 2 weeks, and Control Shrimp daily. Most recently, Japer AI was updated on November 3, 2026 and Control Shrimp on October 28, 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.*