# AI Prompt Editor vs Prompts by E

The clearest difference is in-app purchases: AI Prompt Editor at none against Prompts by E's 1. AI Prompt Editor also leads on update cadence (every 6 days vs every 2 months) and iOS requirement (13.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. Prompts by E sells 1 in-app purchase, starting at $0.99 per month. AI Prompt Editor asks for nothing beyond the download.

AI Prompt Editor ships an update every 6 days, Prompts by E every 2 months. The most recent releases landed on September 19, 2026 and June 24, 2026 respectively.

## The numbers

| Metric | AI Prompt Editor | Prompts by E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (5 ratings)](https://appshunter.io/ios/app/prompts-by-e-string/id6450276417/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 15 MB | 18 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Rei Okiyama](https://appshunter.io/developer/1685621844) | [E-String Technologies, Inc.](https://appshunter.io/developer/294199643) |

## What reviewers say

### AI Prompt Editor

[App page](https://appshunter.io/ios/app/ai-prompt-editor/id6448696132)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prompts by E

[App page](https://appshunter.io/ios/app/prompts-by-e-string/id6450276417)

This app helps you create, manage, and use AI prompt templates. It generates easy-to-fill forms for your prompts and copies the final output to your clipboard for use in other generative AI applications.

**Highlights:** Create and manage prompt templates, Generate easy-to-fill forms for prompts, Copy generated prompts to clipboard, Use with generative AI apps, Intuitive interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prompts Pro Monthly | $0.99 | per month |


## Frequently asked questions

### Is AI Prompt Editor free?

AI Prompt Editor is free to download, with no in-app purchases.

### Is Prompts by E free?

Prompts by E is free to download, with in-app purchases available.

### Do AI Prompt Editor or Prompts by E have ads?

Neither AI Prompt Editor nor Prompts by E shows ads.

### Which is updated more often, AI Prompt Editor or Prompts by E?

AI Prompt Editor ships an update every 6 days, and Prompts by E every 2 months. Most recently, AI Prompt Editor was updated on September 19, 2026 and Prompts by E on June 24, 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.*