# Unique Grown Diamond vs Invoice Generator

The clearest difference is in-app purchases: Unique Grown Diamond at none against Invoice Generator's 3. Invoice Generator's advantage is update cadence (weekly vs monthly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice Generator sells 3 in-app purchases, starting at $0.99 per 7 days. Unique Grown Diamond asks for nothing beyond the download.

Unique Grown Diamond ships an update monthly, Invoice Generator weekly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Unique Grown Diamond | Invoice Generator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Size | 16 MB | 48 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [OOZEE TECHNOLOGIES](https://appshunter.io/developer/1017657067) | [Parth Sakhiya](https://appshunter.io/developer/1876907859) |

## What reviewers say

### Unique Grown Diamond

[App page](https://appshunter.io/ios/app/unique-grown-diamond/id6502449573)

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

**In-app purchases:** none


### Invoice Generator

[App page](https://appshunter.io/ios/app/invoice-generator-invly/id6759104264)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Maker - Weekly Subscription | $0.99 | per 7 days |
| Invoice Maker Monthly Subscription | $1.99 | per month |
| Invoice Maker - Yearly Subscription | $19.99 | per year |


## Frequently asked questions

### Is Unique Grown Diamond free?

Unique Grown Diamond is free to download, with no in-app purchases.

### Is Invoice Generator free?

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

### Do Unique Grown Diamond or Invoice Generator have ads?

Neither Unique Grown Diamond nor Invoice Generator shows ads.

### Which is updated more often, Unique Grown Diamond or Invoice Generator?

Unique Grown Diamond ships an update monthly, and Invoice Generator weekly. Most recently, Unique Grown Diamond was updated on October 25, 2026 and Invoice Generator on October 25, 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.*