# Sir vs SurfacePro

The clearest difference is in-app purchases: Sir at none against SurfacePro's 1. Sir also leads on device support (3 vs 1) and iOS requirement (11.0 vs 18.6). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. SurfacePro sells 1 one-off in-app purchase. Sir asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Sir against 5.0 for SurfacePro. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

## The numbers

| Metric | Sir | SurfacePro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/sir-charge/id6758356111/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/surfacepro-area-caculator/id6761861093/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Monthly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 10 MB |
| Requires iOS | **11.0** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [SirCharge LLC](https://appshunter.io/developer/1872523022) | [EDUARD MARIUS ROBERT PANTAZI](https://appshunter.io/developer/1891808266) |

## What reviewers say

### Sir

[App page](https://appshunter.io/ios/app/sir-charge/id6758356111)

This app provides on-demand mobile EV charging delivered directly to your vehicle. It offers fast Level 3 DC charging, real-time tracking of your charger, and easy scheduling for convenient power when and where you need it.

**Highlights:** On-demand mobile charging, Fast Level 3 DC charging, Real-time charger tracking, Easy scheduling, Simple, clear pricing, Reduces range anxiety

**Features:** macOS Compatibility

**In-app purchases:** none


### SurfacePro

[App page](https://appshunter.io/ios/app/surfacepro-area-caculator/id6761861093)

Measure any surface area using your iPhone's camera with AR or GPS. Get instant readings for area, perimeter, and terrain, with options for detailed export and annotation. Works indoors or outdoors, on any iPhone.

**Highlights:** AR and GPS measurement modes, Real-time area and perimeter calculation, Terrain analysis (altitude, slope), Professional PDF, KML, GPX, CSV export, Diagram annotation tools, Unlimited saves and multi-polygon support, Organize measurements into folders

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One-time Payment | $9.99 | one-time |


## Frequently asked questions

### Is Sir free?

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

### Is SurfacePro free?

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

### Which has better reviews, Sir or SurfacePro?

Sir and SurfacePro are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do Sir or SurfacePro have ads?

Neither Sir nor SurfacePro shows ads.

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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.*