# Pii Stock vs Pro Invoice Builder

The clearest difference is in-app purchases: Pii Stock at none against Pro Invoice Builder's 1. Pii Stock also leads on update cadence (weekly vs every 6 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Pro Invoice Builder sells 1 in-app purchase, starting at $6.99 per 7 days. Pii Stock asks for nothing beyond the download.

Pii Stock ships an update weekly, Pro Invoice Builder every 6 months. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Pii Stock | Pro Invoice Builder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 6 months |
| Size | 55 MB | 6 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [chheng Kimchheang](https://appshunter.io/developer/1812856406) | [Oksana Tkachenko](https://appshunter.io/developer/1850946713) |

## What reviewers say

### Pii Stock

[App page](https://appshunter.io/ios/app/pii-stock/id6751764063)

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

**In-app purchases:** none


### Pro Invoice Builder

[App page](https://appshunter.io/ios/app/pro-invoice-builder/id6754019406)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Weekly | $6.99 | per 7 days |


## Frequently asked questions

### Is Pii Stock free?

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

### Is Pro Invoice Builder free?

Pro Invoice Builder is free to download, with in-app purchases available.

### Do Pii Stock or Pro Invoice Builder have ads?

Neither Pii Stock nor Pro Invoice Builder shows ads.

### Which is updated more often, Pii Stock or Pro Invoice Builder?

Pii Stock ships an update weekly, and Pro Invoice Builder every 6 months. Most recently, Pii Stock was updated on November 5, 2026 and Pro Invoice Builder 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.*