iDor Mobile vs Calculator Pro+ for iPad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iDor Mobile
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.
- 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
Read full descriptionHide full description
The doorbell rings, but you’re not expecting visitors. With the iDor Mobile™ app, you can immediately see who’s at your door. Using your iPhone or iPad, you can now communicate with your visitors from your home or remotely on a 3G/4G/LTE network. • When someone rings your doorbell or presses the call button, an image automatically appears on your iPhone, iPad, iPod Touch and Apple Watch. You can now talk directly with your visitor and decide if you want to open the door. • If you have multiple cameras installed, you can also switch between interior and exterior views of your home. You can use a soft button to call up the elevator to your floor or even your apartment. As long as you are within the wireless range of your home or are accessing a 3G/4G/LTE network, iDor Mobile is always ready for you — it’s the most useful innovation since the invention of the doorbell! All you need to control the iDor Mobile app is the controller, an iPhone, iPad, iPod Touch, Apple Watch with Version 11 and up, a Siedle or iDor Mobile video intercom system, and a wireless or 3G/4G/LTE connection. Is your intercom system older? No problem — iDor Mobile is compatible with most video intercom systems
Calculator Pro+ for iPad
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.
- Basic and scientific calculator modes
- Universal unit and currency converter
- Multitasking mode
- Calculation history bar
- Customizable skins
- VoiceOver accessibility
Read full descriptionHide full description
A simple calculator for your iPad with unit & currency converter and multitasking mode. Get it now for free! Calculator Pro main features: - Basic calculator in Portrait Mode - Scientific calculator in Landscape Mode - Universal converter for Currency, Length, Time, Weight, Pressure, Temperature, Fuel Consumption, Speed and many more categories - Multitasking mode: use Calculator Pro and any other app simultaneously Calculator Pro+ for iPad is designed for everyone looking for simplicity and functionality. Enjoy basic calculations in Portrait Mode with big handy buttons, or make complex calculations in scientific calculator, available in Landscape Mode. Calculator Pro is the only one calculator needed for math classes from primary school through college. The app is great in basic everyday calculations and solving complex problems in physics, astronomy or chemistry as well. Need to convert one unit to another? With the intuitive and beautifully designed converter, you can easily switch between currencies, temperatures, length, speed and other numerous units, and continue calculation without interruptions. Features: • Two modes are available: do basic calculations in Portrait Mode or go advanced in Landscape Mode • Degrees and Radians calculations • History Bar: see your full calculation history directly on the screen • Track Calculations History: view, save, delete selected equation or clear all • Universal converter with 19 categories, including Currency, Length, Time, Weight, Pressure, Temperature, Area, Data Size, Energy, Force, Frequency, Power, Acceleration, Density, Angle, Typography, Volume, Fuel Consumption and Speed • Handy text search to find categories and units instantly • Multitasking mode: bring in Calculator Pro while viewing web pages, photos, taking notes and more to get results instantly! • Calculator Pro is now accessible via VoiceOver as well • Smart Keyboard support: take full advantage of seamless and intuitive calculations on your iPad Pro • Pick the look from a bunch of skins to suit your own preference (Modern, Rose, Wood, Old, Doodle, Minimalistic, Zombie, Yellow, New Year) • Memory buttons to help you out with complex calculations • Accidentally input the wrong number? Just swipe with your finger to edit it! • Copy and paste results and expressions directly into the current calculation • Comment on the equation and send the calculation results with comments via email Now you can do calculations on the go seamlessly! For complete access to all Calculator Pro+ for iPad features, you will need to allow access to the following: *Location data - this will enable automatic currency selection in the Converter. Privacy Policy: http://apalon.com/privacy_policy.html EULA: http://www.apalon.com/terms_of_use.html California Privacy Notice: https://apalon.com/privacy_policy.html#h AdChoices: https://apalon.com/privacy_policy.html#i
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | iDor Mobile | Calculator Pro+ for iPad |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (101 ratings) | 4.4 (62K ratings) — better |
| Positive reviews | 46.7% of reviews — better | 26.0% of reviews |
| Number of ratings | 101 | 62K — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPad |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 30 MB | 183 MB |
| Age rating | 4+ | 17+ |
| Developer | iDor Mobile LLC | Mosaic S.r.l. |
Customer experience
iDor Mobile
Calculator Pro+ for iPad
User reviews
iDor Mobile
From 101 App Store ratingsWhat we love
- 👍 Video is very clear
- 👍 Can see who's at the gate
- 👍 Calls phone when not home
- 👍 Works remotely
- 👍 Reliable solution
Room to improve
- 🐛 Login failures
- 🐛 Notifications are silent
- 🐛 App crashes frequently
- 🐛 Leaves users locked out
- 🐛 Cameras blacked out
Calculator Pro+ for iPad
From 62K App Store ratingsWhat we love
- 🚀 Easily the best calculator app on iPad
- 👍 Great app and very useful
- 👍 Simple and straightforward features and functions
- 👍 Allows customization & personalization
Room to improve
- 🚨 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
Bugs and requests
iDor Mobile
Reported bugs
55 issues- Login failures
- Notifications not working
- App crashes
- App offline
- App not connecting
Show 50 moreShow fewer
- App not working
- App sync issues
- Cameras blacked out
- Gate open buttons missing
- App constantly offline
- Missed deliveries
- Silent pop-ups
- App crashes when opening
- Unnoticeable chime/vibration
- Not intuitive to let people in
- Crashes on WiFi
- Hard to use design
- Poorly thought out app
- Never works
- Never connects to allow entry
- Only works as a security camera
- Always down, locked out
- Never worked as advertised
- Controls never work
- Bugs out after notification
- No customer service number
- Horribly designed
- Full of bugs
- Poor design choices
- Terrible app
- Doesn't notify
- Update removed settings
- Cannot hear buzzer remotely
- Cannot answer intercom remotely
- Cannot call elevator remotely
- App stopped working
- Blank screen on open
- Notification issues
- Terrible user experience
- Bugs out after notification
- Only allows door opening when ringing
- Very short window to open door
- Kills phone battery life
- Routinely crashes
- Blank offline screen
- Randomly ceased functioning
- Doesn't ring when someone buzzes
- No camera feed
- Outdated UI
- App shuts down quickly
- Does nothing when trying to call
- SIP issues
- Crashes after a few moments
- Newest update removed ability to answer/open door
- Cannot see camera feed
Requested features
19 requests- 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
Show 14 moreShow fewer
- Improve user experience
- Allow multiple alert options
- Set up alerts that keep vibrating or ringing
- Debug the app
- Fix the app
- Add more recent updates
- Make volume louder
- Provide options for alert sounds
- Make doorbell alerts more noticeable
- Add dark mode option
- Improve notification delivery
- Fix SIP issues
- Add ability to answer and open door
- Restore camera feed functionality
Calculator Pro+ for iPad
Reported bugs
2 issues- Calculations not working correctly
- Unable to restore past purchases
Requested features
3 requests- More calculator themes and functionality
- Memory function
- Compatibility with iPhone
In-app purchases
iDor Mobile
No in-app purchases
Calculator Pro+ for iPad
- Premium Weekly with free trial7 Days trial$0.997 Days
- Premium Weekly$0.997 Days
- Premium Yearly with Free Trial7 Days trial$19.991 Year
Show 1 moreShow fewer
- Premium Yearly$19.991 Year
- Calculator Pro for iPad Full$0.99
Questions
Is iDor Mobile free?
Is Calculator Pro+ for iPad free?
Which has better reviews, iDor Mobile or Calculator Pro+ for iPad?
Do iDor Mobile or Calculator Pro+ for iPad have ads?
Which is updated more often, iDor Mobile or Calculator Pro+ for iPad?
Other comparisons















