# DetectGPT vs Invoice Maker

The clearest difference is ads: DetectGPT at none against Invoice Maker's shown. DetectGPT also leads on device support (3 vs 1). Invoice Maker's advantage is update cadence (every 3 days vs every 2 weeks). On price, rating, ratings volume and in-app purchases there is nothing between them.

Both are free to download. DetectGPT sells 9 in-app purchases, starting at $5.99 per 7 days and Invoice Maker sells 4 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for DetectGPT against 4.8 for Invoice Maker. Both are backed by a comparable volume of ratings — 16 and 25 respectively.

DetectGPT ships an update every 2 weeks, Invoice Maker every 3 days. Both last shipped on October 30, 2026.

## The numbers

| Metric | DetectGPT | Invoice Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (16 ratings)](https://appshunter.io/ios/app/detectgpt-trusted-ai-detector/id6744414595/reviews) | **[4.8 (25 ratings)](https://appshunter.io/ios/app/invoice-maker-bill-generator/id6746938705/reviews)** |
| Number of ratings | 16 | **25** |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 48 MB | 31 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Consultech Ventures LLC](https://appshunter.io/developer/1806383235) | [John Paley](https://appshunter.io/developer/1819048337) |

## What reviewers say

### DetectGPT

[App page](https://appshunter.io/ios/app/detectgpt-trusted-ai-detector/id6744414595)

Instantly detect AI-generated text and rewrite it to appear human-written, bypassing AI detectors. Ideal for writers, students, and marketers seeking content originality and integrity.

**Highlights:** AI text detection, Humanize AI text, Plagiarism detection, Sentence-level analysis, Exportable reports, Academic mode, Weekly model updates

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DetectGPT Premium | $5.99 | per 7 days |
| DetectGPT Weekly Premium | $5.99 | per 7 days |
| DetectGPT Premium | $9.99 | per month |
| DetectGPT Premium | $9.99 | per month |
| DetectGPT Premium | $12.99 | per month |
| DetectGPT Premium | $14.99 | per month |
| DetectGPT Premium | $29.99 | per year |
| DetectGPT Premium | $39.99 | per year |
| DetectGPT Premium | $39.99 | per year |


### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-bill-generator/id6746938705)

Create professional invoices and estimates quickly with customizable templates. Manage clients and projects, track payments, and gain business insights with smart reports. Enhance your brand with custom logos and colors.

**Highlights:** Professional invoice and estimate creation, Client and project management, Customizable templates with branding, Flexible payment options, Smart revenue and expense reports, Unlimited invoices and estimates

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| accessWeeklySubscription | $8.99 | per 7 days |
| Invoice Maker: Bill Generator. | $8.99 | per 7 days |
| accessMonthlySubscription | $14.99 | per month |
| accessMonthlyTrialSubscription | $15.99 | per month |


## Frequently asked questions

### Is DetectGPT free?

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

### Is Invoice Maker free?

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

### Which has better reviews, DetectGPT or Invoice Maker?

Invoice Maker is rated higher. DetectGPT averages 4.8 out of 5 from 16 ratings, while Invoice Maker averages 4.8 from 25 ratings.

### Do DetectGPT or Invoice Maker have ads?

Invoice Maker shows ads; DetectGPT does not.

### Which is updated more often, DetectGPT or Invoice Maker?

DetectGPT ships an update every 2 weeks, and Invoice Maker every 3 days. Most recently, DetectGPT was updated on October 30, 2026 and Invoice Maker on October 30, 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.*