# SMK53 vs Invoice Maker & Estimat

The clearest difference is in-app purchases: SMK53 at none against Invoice Maker & Estimat's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Invoice Maker & Estimat sells 2 in-app purchases, starting at $3.99 per 7 days. SMK53 asks for nothing beyond the download.

SMK53 ships an update every 2 months, Invoice Maker & Estimat every 3 months. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SMK53 | Invoice Maker & Estimat |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 4 MB | 42 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Husain Musaji](https://appshunter.io/developer/1654721258) | [Lamar Bain](https://appshunter.io/developer/1825843660) |

## What reviewers say

### SMK53

[App page](https://appshunter.io/ios/app/smk53/id6448306246)

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice Maker & Estimat

[App page](https://appshunter.io/ios/app/invoice-maker-and-estimat/id6749022332)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $3.99 | per 7 days |
| Premium | $3.99 | per 7 days |


## Frequently asked questions

### Is SMK53 free?

SMK53 is free to download, with no in-app purchases.

### Is Invoice Maker & Estimat free?

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

### Do SMK53 or Invoice Maker & Estimat have ads?

Neither SMK53 nor Invoice Maker & Estimat shows ads.

### Which is updated more often, SMK53 or Invoice Maker & Estimat?

SMK53 ships an update every 2 months, and Invoice Maker & Estimat every 3 months. Most recently, SMK53 was updated on October 30, 2026 and Invoice Maker & Estimat on October 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*