# PBuilder vs FlowStack

The clearest difference is in-app purchases: FlowStack at none against PBuilder's 3. FlowStack also leads on ads (none vs shown). PBuilder's advantage is update cadence (every 4 days vs every 5 months) and iOS requirement (17.6 vs 26.2). On price and device support there is nothing between them.

Both are free to download. PBuilder sells 3 in-app purchases, starting at $5.99 per month. FlowStack asks for nothing beyond the download.

PBuilder ships an update every 4 days, FlowStack every 5 months. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | PBuilder | FlowStack |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 days** | Every 5 months |
| Size | 38 MB | 1 MB |
| Requires iOS | **17.6** | 26.2 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [BySho2](https://appshunter.io/developer/1847886751) | [David Castellano](https://appshunter.io/developer/1892146693) |

## What reviewers say

### PBuilder

[App page](https://appshunter.io/ios/app/pbuilder/id6754330212)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Light Plan | $5.99 | per month |
| Basic Plan | $9.99 | per month |
| PremiumPlan | $14.99 | per month |


### FlowStack

[App page](https://appshunter.io/ios/app/flowstack-ai/id6761936853)

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

**In-app purchases:** none


## Frequently asked questions

### Is PBuilder free?

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

### Is FlowStack free?

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

### Do PBuilder or FlowStack have ads?

PBuilder shows ads; FlowStack does not.

### Which is updated more often, PBuilder or FlowStack?

PBuilder ships an update every 4 days, and FlowStack every 5 months. Most recently, PBuilder was updated on October 13, 2026 and FlowStack on October 10, 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.*