# uidChecker vs Invoice Maker

The clearest difference is in-app purchases: uidChecker at none against Invoice Maker's 3. uidChecker also leads on ads (none vs shown) and iOS requirement (7.0 vs 17.2). On price, update cadence and device support there is nothing between them.

Both are free to download. Invoice Maker sells 3 in-app purchases, starting at $3.99 per month. uidChecker asks for nothing beyond the download.

uidChecker ships an update every 6 days, Invoice Maker weekly. The most recent releases landed on December 14, 2025 and September 12, 2026 respectively.

## The numbers

| Metric | uidChecker | Invoice Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (8 ratings)](https://appshunter.io/ios/app/invoice-maker-simple-and-pro/id6444819043/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 71.4% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 6 days** | Weekly |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 8 MB |
| Requires iOS | **7.0** | 17.2 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Reinhard Haug](https://appshunter.io/developer/829811495) | [MANIME - Marketing Services](https://appshunter.io/developer/1657093561) |

## What reviewers say

### uidChecker

[App page](https://appshunter.io/ios/app/uidchecker/id829811492)

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice Maker

[App page](https://appshunter.io/ios/app/invoice-maker-simple-and-pro/id6444819043)

Easily create and send professional invoices directly from your mobile device. Track customers and manage your billing with features like custom logos, signatures, discounts, and tax calculations. Supports multiple currencies for global business needs.

**Highlights:** Add signature and logo, Share/Email invoices directly, Multiple currencies support, Discount options, Add taxes percentage, Customer tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Invoice Maker Monthly | $3.99 | per month |
| Smart Invoice Maker: 3 Months | $9.99 | per 3 months |
| Invoice Simple Yearly | $29.99 | per year |


## Frequently asked questions

### Is uidChecker free?

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

### Is Invoice Maker free?

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

### Do uidChecker or Invoice Maker have ads?

Invoice Maker shows ads; uidChecker does not.

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

uidChecker ships an update every 6 days, and Invoice Maker weekly. Most recently, uidChecker was updated on December 14, 2025 and Invoice Maker on September 12, 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.*