Calculator + vs AirMicroPad
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator +
This app offers a free basic and scientific calculator with an elegant interface. Upgrade for advanced features like graphing, equation solving, and unit conversions. Supports fractions, percentages, and multiple themes.
- Free basic and scientific calculator
- Elegant and intuitive interface
- Advanced editing and equation display
- Fraction and percent support
- Graphing and equation solving
- Base converter and multiple themes
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Award winning calculator app for iPad and iPhone. Designed with simplicity, usability and beauty in mind! FEATURES: - Free basic calculator - Free scientific calculator - Elegant & Intuitive interface - Advanced editing by easily going back and forth - Displays both the equation & the result at the same time - Supports Fraction & Percent - Supports many scientific functions If you are looking for more advanced features you can upgrade to one or more of the following: - Fraction Calculator with feet, inches & cm support! - Solving for x with a polynomial Calculator for solving quadratic & cubic equations 2x³ - 4x² - 22x + 24 = 0 - Linear Equations Solver for solving system of linear equations 2x – y = 9 3x + 4y = –14 - Graphing Calculator to find the local min, max & intersection points y = 2x³ – 4x (x² + y²)³ = -27y²x² - Triangle Calculator - Cone Calculator - Arc Calculator - Circle Calculator - Base Converter ( HEX OCT BIN DEC ) - Multiple themes Enjoy the FREE Scientific calculator on your iPhone & iPad. If you like it, support us by upgrading or giving us a positive review. Thanks :) Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
AirMicroPad
View and save images from wireless microscopes like AirMicro and ProScope Mobile. Ideal for skin checks and educational purposes, it connects to your device via Wi-Fi for live video and image capture.
- Live video display
- Still image capture
- Wi-Fi connectivity
- Adjustable resolution
- Supports multiple devices
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This application is for wireless microscope "AirMicro" and also "ProScope Mobile". It can display and preserve a picture captured with "AirMicro" and "ProScope Mobile" as well. Please use them for skin-check and education,etc. Made by Scalar Corporation, the original inventors of handheld microscopy, the AirMicro App and AirMicroPad App are made for the Scalar AirMicro and Bodelin ProScope Mobile, the first wireless handheld microscopes made specifically for the Apple iPad, iPhone, and iPod touch. The AirMicro App allows the AirMicro/ProScope Mobile hardware to view live video and capture still images directly into the photo library on your Apple Mobile device. Combined with the hardware the AirMicro creates it's own WiFi network so it can be used on as many as 253 Apple Mobile Devices simultaneously. The image fills the screen and resolution can be adjusted from QVGA to VGA. Simple to use yet robust for an entire classroom, clinic or CSI team to use in the field, AirMicro and ProScope Mobile have set a new level for true mobile scientific discovery. The AirMicro Handheld Microscope is sold and distributed exclusively in Japan and Asia by Scalar Corporation http://www.scalar.co.jp/ The ProScope Mobile is sold and distributed exclusively in North America by US partner Bodelin Technologies http://www.bodelin.com/proscopehr/proscope_mobile/
Screenshots
Verdict
The clearest difference is review sentiment: Calculator + at 85% against AirMicroPad's 33%. Calculator + also leads on rating (4.6 vs 2.0) and update cadence (every 5 days vs every 2 months). AirMicroPad's advantage is in-app purchases (none vs 10) and ads (none vs shown). On price and device support 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 + sells 10 in-app purchases, starting at $4.99 per month. AirMicroPad asks for nothing beyond the download.
Calculator + holds the better App Store score, 4.6 against 2.0. That said, the two scores are not equally well evidenced: Calculator + has 10K ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 85% of Calculator +'s written reviews are positive against 33% of AirMicroPad's.
Calculator + ships an update every 5 days, AirMicroPad every 2 months. The most recent releases landed on November 14, 2026 and November 1, 2026 respectively.
| Parameter | Calculator + | AirMicroPad |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (10K ratings) — better | 2.0 (3 ratings) |
| Positive reviews | 84.9% of reviews — better | 33.3% of reviews |
| Number of ratings | 10K — better | 3 |
| Update frequency | Every 5 days — better | Every 2 months |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad — better | iPad |
| Requires iOS | 16.4 | 8.0 — better |
| Further details — not scored | ||
| Size | 50 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | xNeat.com | SCALAR CORP. |
Customer experience
Calculator +
AirMicroPad
Bugs and requests
Calculator +
Reported bugs
5 issues- Fraction calculator has TWO subtraction buttons and NO division button
- Decimals seem to be changed to fraction with no apparent way of changing it back
- Functionality is dropped by forcing you to the main menu every time you open it
- Currency converter broken
- Login screen freezes
Requested features
5 requests- Add mod function
- Add commas
- Add 1/x function
- Support for Retina Display
- Add number 4 with two lines
AirMicroPad
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Calculator +
- Scientific Calculator3 Days trial$4.991 Month
- Calculator7 Days trial$39.991 Year
- Linear Calculator$2.99
- Factoring Calculator$2.99
- Handwriting Calculator$2.99
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- Graphing Calculator$3.99
- Fraction Calculator$3.99
- Scientific Calculator$4.99
- Calculator Plus$4.99
- Calculator$16.99
AirMicroPad
No in-app purchases









