# 發Q vs Invoice Barcode

The clearest difference is price: 發Q at Free against Invoice Barcode's $0.99. 發Q also leads on review sentiment (40% vs 0%) and update cadence (every 4 weeks vs every 8 months). Invoice Barcode's advantage is ads (none vs shown). On in-app purchases and device support there is nothing between them.

發Q is free to download; Invoice Barcode costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

發Q ships an update every 4 weeks, Invoice Barcode every 8 months. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 發Q | Invoice Barcode |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | **40.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 4 weeks** | Every 8 months |
| Monetization | **Ad-supported** | Paid |
| Size | 30 MB | 1 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [BAT Mobile Inc.](https://appshunter.io/developer/1190563974) | [Ming Tsay](https://appshunter.io/developer/1645120064) |

## What reviewers say

### 發Q

[App page](https://appshunter.io/ios/app/q/id1413228414)

This app helps you track personal spending by combining cloud and paper invoices. It offers a unique, multi-language voice-guided experience for checking lottery winning numbers, making the process fun and educational. Easily manage your electronic receipts and reduce paper waste.

**Highlights:** Cloud and paper invoice tracking, Multi-language voice-guided lottery checking, Customizable voice options, Invoice scanning with sound effects, Electronic receipt management, Desktop widget for quick access

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice Barcode

[App page](https://appshunter.io/ios/app/invoice-barcode/id1645120062)

Display your invoice barcodes directly on your home or lock screen. This utility app allows for quick access to your essential barcodes without needing to open the main application.

**Highlights:** Display invoice barcodes on home screen, Display invoice barcodes on lock screen, Quick access to barcodes, Contact developer via email

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

**In-app purchases:** none


## Frequently asked questions

### Is 發Q free?

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

### Is Invoice Barcode free?

Invoice Barcode costs $0.99, with no in-app purchases.

### Do 發Q or Invoice Barcode have ads?

發Q shows ads; Invoice Barcode does not.

### Which is updated more often, 發Q or Invoice Barcode?

發Q ships an update every 4 weeks, and Invoice Barcode every 8 months. Most recently, 發Q was updated on September 29, 2026 and Invoice Barcode on October 6, 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.*