# iDor Mobile vs Calculator Pro+ for iPad

The clearest difference is rating: Calculator Pro+ for iPad at 4.4 against iDor Mobile's 2.2. Calculator Pro+ for iPad also leads on ratings volume (62K vs 101) and update cadence (monthly vs every 2 months). iDor Mobile's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price there is nothing between them.

Both are free to download. Calculator Pro+ for iPad sells 5 in-app purchases, starting at $0.99 per 7 days. iDor Mobile asks for nothing beyond the download.

Calculator Pro+ for iPad holds the better App Store score, 4.4 against 2.2. That said, the two scores are not equally well evidenced: Calculator Pro+ for iPad has 62K ratings behind it against 101, so its average is the more settled of the two. Written reviews complicate that: 47% of iDor Mobile's written reviews are positive against 26% of Calculator Pro+ for iPad's, so the app with the better star average is not the one people write more warmly about.

iDor Mobile ships an update every 2 months, Calculator Pro+ for iPad monthly. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | iDor Mobile | Calculator Pro+ for iPad |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.2 (101 ratings)](https://appshunter.io/ios/app/idor-mobile/id625327510/reviews) | **[4.4 (62K ratings)](https://appshunter.io/ios/app/calculator-pro-plus-for-ipad/id749118884/reviews)** |
| Number of ratings | 101 | **62K** |
| Positive reviews | **46.7% of reviews** | 26.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 183 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPad |
| Age rating | 4+ | 17+ |
| Developer | [iDor Mobile LLC](https://appshunter.io/developer/625327513) | [Mosaic S.r.l.](https://appshunter.io/developer/570748343) |

## What reviewers say

### iDor Mobile

[App page](https://appshunter.io/ios/app/idor-mobile/id625327510)

See and speak with visitors at your door from your iPhone or iPad, whether you're home or away. Receive instant alerts when someone rings, and control access remotely. Compatible with most video intercom systems.

**Highlights:** See visitors at your door, Communicate with visitors, Remote door access control, Multiple camera view switching, Elevator call functionality, Works on 3G/4G/LTE networks

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Video is very clear
- 👍 Can see who's at the gate
- 👍 Calls phone when not home
- 👍 Works remotely
- 👍 Reliable solution

**What reviewers complain about**

- 🐛 Login failures
- 🐛 Notifications are silent
- 🐛 App crashes frequently
- 🐛 Leaves users locked out
- 🐛 Cameras blacked out

**Reported bugs**

- Login failures
- Notifications not working
- App crashes
- App offline
- App not connecting

**Requested features**

- Update the app
- Include sound and vibration options for notifications
- Move controls to the home screen
- Provide feedback when a button is tapped
- Update visuals and layout


### Calculator Pro+ for iPad

[App page](https://appshunter.io/ios/app/calculator-pro-plus-for-ipad/id749118884)

This app offers both basic and scientific calculation modes, alongside a comprehensive unit and currency converter. It supports multitasking, allowing simultaneous use with other applications, and features a history bar for tracking calculations.

**Highlights:** Basic and scientific calculator modes, Universal unit and currency converter, Multitasking mode, Calculation history bar, Customizable skins, VoiceOver accessibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly with free trial | $0.99 | per 7 days |
| Premium Weekly | $0.99 | per 7 days |
| Premium Yearly with Free Trial | $19.99 | per year |
| Premium Yearly | $19.99 | per year |
| Calculator Pro for iPad Full | $0.99 | one-time |

**What reviewers like**

- 🚀 Easily the best calculator app on iPad
- 👍 Great app and very useful
- 👍 Simple and straightforward features and functions
- 👍 Allows customization & personalization

**What reviewers complain about**

- 🚨 Lousy and annoying pop-up screen asking to subscribe
- 🚨 Too many ads that make the app unusable
- 🚨 Ads interrupt calculations and disrupt workflow
- 🚨 Ads are very intrusive and full-screen
- 🚨 Ads make the app virtually unusable without paying

**Reported bugs**

- Calculations not working correctly
- Unable to restore past purchases

**Requested features**

- More calculator themes and functionality
- Memory function
- Compatibility with iPhone


## Frequently asked questions

### Is iDor Mobile free?

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

### Is Calculator Pro+ for iPad free?

Calculator Pro+ for iPad is free to download, with in-app purchases available.

### Which has better reviews, iDor Mobile or Calculator Pro+ for iPad?

Calculator Pro+ for iPad is rated higher. iDor Mobile averages 2.2 out of 5 from 101 ratings, while Calculator Pro+ for iPad averages 4.4 from 62K ratings.

### Do iDor Mobile or Calculator Pro+ for iPad have ads?

Calculator Pro+ for iPad shows ads; iDor Mobile does not.

### Which is updated more often, iDor Mobile or Calculator Pro+ for iPad?

iDor Mobile ships an update every 2 months, and Calculator Pro+ for iPad monthly. Most recently, iDor Mobile was updated on November 1, 2026 and Calculator Pro+ for iPad on November 8, 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.*