# JBT PRoLOG vs FlutterCodeX

The clearest difference is in-app purchases: JBT PRoLOG at none against FlutterCodeX's 1. JBT PRoLOG also leads on iOS requirement (11.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. FlutterCodeX sells 1 one-off in-app purchase. JBT PRoLOG asks for nothing beyond the download.

JBT PRoLOG ships an update every 3 months, FlutterCodeX every 2 months. The most recent releases landed on September 27, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | JBT PRoLOG | FlutterCodeX |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 38 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [ESYS Gesellschaft fuer Elektronische Systemtechnik . Hard- und Software mbH](https://appshunter.io/developer/917295043) | [Chengdu Feng Chui Ye Technology Co., Ltd](https://appshunter.io/developer/1608679124) |

## What reviewers say

### JBT PRoLOG

[App page](https://appshunter.io/ios/app/jbt-prolog/id1401983412)

**Features:** macOS Compatibility

**In-app purchases:** none


### FlutterCodeX

[App page](https://appshunter.io/ios/app/fluttercodex/id6749268845)

Explore and learn about Flutter widgets with live examples and source code. Manage your learning materials with a built-in Markdown editor.

**Highlights:** Flutter widget examples, View source code, Markdown document management, Learning material storage, Quick lookup of usage

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional Edition | $1.99 | one-time |


## Frequently asked questions

### Is JBT PRoLOG free?

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

### Is FlutterCodeX free?

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

### Do JBT PRoLOG or FlutterCodeX have ads?

Neither JBT PRoLOG nor FlutterCodeX shows ads.

### Which is updated more often, JBT PRoLOG or FlutterCodeX?

JBT PRoLOG ships an update every 3 months, and FlutterCodeX every 2 months. Most recently, JBT PRoLOG was updated on September 27, 2026 and FlutterCodeX on October 7, 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.*