# PiPhone vs Open Invoice & Estimate Maker

The clearest difference is in-app purchases: PiPhone at none against Open Invoice & Estimate Maker's 5. PiPhone also leads on update cadence (every 4 days vs every 3 weeks). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Open Invoice & Estimate Maker sells 5 in-app purchases, starting at $12.99 per month. PiPhone asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for PiPhone against 5.0 for Open Invoice & Estimate Maker. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

PiPhone ships an update every 4 days, Open Invoice & Estimate Maker every 3 weeks. The most recent releases landed on October 8, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | PiPhone | Open Invoice & Estimate Maker |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/piphone/id1555120878/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/open-invoice-and-estimate-maker/id6759610007/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 5 MB | 77 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Payne](https://appshunter.io/developer/1535693722) | [CANOPAS SOFTWARE LLP](https://appshunter.io/developer/1570951266) |

## What reviewers say

### PiPhone

[App page](https://appshunter.io/ios/app/piphone/id1555120878)

Create and customize animated pie charts with drag-and-drop annotations. Personalize text, highlight slices, and add currency symbols. Save and share your visual data easily.

**Highlights:** Animated pie charts, Drag-and-drop annotations, Customizable font size, Slice highlighting, Currency symbol options, Save and share charts

**Features:** macOS Compatibility

**In-app purchases:** none


### Open Invoice & Estimate Maker

[App page](https://appshunter.io/ios/app/open-invoice-and-estimate-maker/id6759610007)

Create professional invoices and job estimates quickly for your small business. Get paid faster with online payment options and track outstanding bills. Designed for contractors and service professionals.

**Highlights:** Create invoices and estimates in seconds, Customizable professional templates, Enable online payments, Track expenses and outstanding payments, Convert estimates to invoices, Digital signature for estimates

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OpenInvoice Pro | $12.99 | per month |
| OpenInvoice Pro 1 Month | $14.99 | per month |
| OpenInvoice Pro 1 Year | $49.99 | per year |
| OpenInvoice Pro 1 Year | $49.99 | per year |
| OpenInvoice Pro | $99.99 | per year |


## Frequently asked questions

### Is PiPhone free?

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

### Is Open Invoice & Estimate Maker free?

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

### Which has better reviews, PiPhone or Open Invoice & Estimate Maker?

PiPhone and Open Invoice & Estimate Maker are both rated 5.0 out of 5 on the App Store, from 3 and 4 ratings respectively.

### Do PiPhone or Open Invoice & Estimate Maker have ads?

Neither PiPhone nor Open Invoice & Estimate Maker shows ads.

### Which is updated more often, PiPhone or Open Invoice & Estimate Maker?

PiPhone ships an update every 4 days, and Open Invoice & Estimate Maker every 3 weeks. Most recently, PiPhone was updated on October 8, 2026 and Open Invoice & Estimate Maker 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.*