# Prompt 3 vs MarkChart

The clearest difference is review sentiment: MarkChart at 73% against Prompt 3's 22%. MarkChart also leads on monetization model (free with in-app purchases vs paid) and iOS requirement (18.2 vs 26.0). Prompt 3's advantage is rating (4.3 vs 4.0) and ratings volume (376 vs 14). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Prompt 3 sells 2 in-app purchases, starting at $9.99 per year and MarkChart sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Prompt 3 holds the better App Store score, 4.3 against 4.0. That said, the two scores are not equally well evidenced: Prompt 3 has 376 ratings behind it against 14, so its average is the more settled of the two. Written reviews complicate that: 22% of Prompt 3's written reviews are positive against 73% of MarkChart's, so the app with the better star average is not the one people write more warmly about.

Prompt 3 ships an update every 6 weeks, MarkChart every 3 weeks. Both last shipped on October 30, 2026.

## The numbers

| Metric | Prompt 3 | MarkChart |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (376 ratings)](https://appshunter.io/ios/app/prompt-3/id1594420480/reviews)** | [4.0 (14 ratings)](https://appshunter.io/ios/app/markchart-mermaid-editor/id6475648822/reviews) |
| Number of ratings | **376** | 14 |
| Positive reviews | 21.7% of reviews | **72.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#23** | #164 |
| Size | 46 MB | 56 MB |
| Requires iOS | 26.0 | **18.2** |
| Devices | **iPhone, iPad, Mac, Vision Pro** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Panic, Inc.](https://appshunter.io/developer/403388568) | [Alexandre Colucci](https://appshunter.io/developer/1478787437) |

## What reviewers say

### Prompt 3

[App page](https://appshunter.io/ios/app/prompt-3/id1594420480)

**Currently charting:** #23 Top Grossing · Developer Tools, #151 Top Free · Developer Tools (US App Store)

A fully-native terminal emulator for Apple devices, offering robust connectivity for SSH, Mosh, and more. It features fast emulation, customizable clips, secure authentication, and cross-device syncing for a seamless experience.

**Highlights:** Native terminal emulator, SSH, Mosh, Eternal Terminal, Telnet support, Panic Sync for cross-device server syncing, Superfast emulation with GPU acceleration, Customizable clips for commands, FaceID/TouchID authentication, Jump Hosts and Agent Forwarding

**Features:** Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prompt 3 iOS + Mac (Annual) | $9.99 | per year |
| Prompt 3 One Time | $49.99 | one-time |

**What reviewers like**

- 🚀 Fast and powerful
- 🔒 Secure with Secure Enclave support
- 👍 Great admin tool
- 👍 Continues to improve over time
- 👍 Fantastic terminal emulator on iPad

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Buggy and unreliable
- 🚫 Subscription required for full functionality
- 💰 Extremely expensive, especially for existing users
- 🤔 Lacks features compared to competitors

**Reported bugs**

- Server list randomly disappears with Panic Sync
- Crashes when connected to external monitor
- Black screen issues with custom font configurations
- Sync issues causing data loss
- Vertical display sync issues

**Requested features**

- Shortcuts support on macOS
- Ability to click and select within commands
- Local shell option
- Run clips on server connection
- Export/backup clips


### MarkChart

[App page](https://appshunter.io/ios/app/markchart-mermaid-editor/id6475648822)

**Currently charting:** #164 Top Grossing · Developer Tools (US App Store)

This app allows you to easily create and preview diagrams using a Markdown-inspired text syntax. It offers templates for various diagram types and supports automatic updates when used with external editors. Export your creations to common image formats.

**Highlights:** Mermaid diagram editing, Real-time preview, Built-in templates, Automatic updates, Export to PDF, PNG, SVG, Syntax highlighting, Dark Mode support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MarkChart Pro | $12.99 | one-time |


## Frequently asked questions

### Is Prompt 3 free?

Prompt 3 is free to download, with in-app purchases available.

### Is MarkChart free?

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

### Which has better reviews, Prompt 3 or MarkChart?

Prompt 3 is rated higher. Prompt 3 averages 4.3 out of 5 from 376 ratings, while MarkChart averages 4.0 from 14 ratings.

### Do Prompt 3 or MarkChart have ads?

Neither Prompt 3 nor MarkChart shows ads.

### Which is updated more often, Prompt 3 or MarkChart?

Prompt 3 ships an update every 6 weeks, and MarkChart every 3 weeks. Most recently, Prompt 3 was updated on October 30, 2026 and MarkChart on October 30, 2026.

### Which is more popular, Prompt 3 or MarkChart?

Prompt 3 currently peaks at #23 in the App Store charts, and MarkChart at #164. Chart position reflects recent download velocity rather than total install base.

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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.*