# HPP Calculator vs Invoice maker

The clearest difference is in-app purchases: HPP Calculator at none against Invoice maker's 3. HPP Calculator also leads on ads (none vs shown) and update cadence (daily vs every 2 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Invoice maker sells 3 in-app purchases, starting at $1.99 per 7 days. HPP Calculator asks for nothing beyond the download.

HPP Calculator ships an update daily, Invoice maker every 2 weeks. The most recent releases landed on September 17, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | HPP Calculator | Invoice maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (7 ratings)](https://appshunter.io/ios/app/invoice-maker-easy-invoice/id6744629511/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 2 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 44 MB | 41 MB |
| Requires iOS | 14.0.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Daeb International Pty Ltd](https://appshunter.io/developer/1222546330) | [Avocado Studio Pty Ltd](https://appshunter.io/developer/1760280675) |

## What reviewers say

### HPP Calculator

[App page](https://appshunter.io/ios/app/hpp-calculator/id6742813723)

**Features:** macOS Compatibility

**In-app purchases:** none


### Invoice maker

[App page](https://appshunter.io/ios/app/invoice-maker-easy-invoice/id6744629511)

Create and send professional invoices quickly and easily. Manage line items with automatic calculations and export invoices as PDFs to share with clients. Designed for freelancers and small businesses, it prioritizes speed and local data privacy.

**Highlights:** Create invoices instantly, Export as PDF, Smart line item management, Automatic total and tax calculations, Fast, simple, and secure, Privacy-friendly local data storage

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Productivity Pack (Weekly) | $1.99 | per 7 days |
| Premium Pass | $2.99 | per 7 days |
| Productivity Pack (Yearly) | $49.99 | per year |


## Frequently asked questions

### Is HPP Calculator free?

HPP Calculator 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 HPP Calculator or Invoice maker have ads?

Invoice maker shows ads; HPP Calculator does not.

### Which is updated more often, HPP Calculator or Invoice maker?

HPP Calculator ships an update daily, and Invoice maker every 2 weeks. Most recently, HPP Calculator was updated on September 17, 2026 and Invoice maker on June 4, 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.*