IT電卓+

IT Calculator+ is a professional calculator app designed for engineers, network administrators, and information processing exam learners. It features four types of calculations frequently needed in IT settings, presented in an easy-to-use tab-based interface.

■ Unit Conversion
Converts between bit / B / KB / MB / GB / TB / PB in a single operation. Supports switching between SI prefixes (1000 base) and IEC prefixes (1024 base, KiB / MiB, etc.), allowing for accurate values ​​for storage capacity, memory, and data transfer volume.

■ Subnet Mask Calculation
Simply enter an IPv4 address and CIDR to instantly display the network address, broadcast address, first/last available hosts, subnet mask, wildcard mask, number of available hosts, and total number of addresses. It correctly handles special cases such as /31 (RFC 3021) and /32.

■ Radix Conversion and Bitwise Operations
Supports conversion between binary, octal, decimal, and hexadecimal numbers. The binary display is easy to read with spaces separated every four digits, and bitwise operations such as AND, OR, XOR, left shift, and right shift can be performed on the same screen.

■ Communication Speed ​​and Transfer Time
You can convert between bps / Kbps / Mbps / Gbps / B/s / KB/s / MB/s / GB/s. Entering file size and communication speed calculates the required time, which is useful for network design and download time estimation.

■ Japanese and English Support
Localized in Japanese and English.

■ Privacy
Calculation results are not sent to the server. All calculations are completed within the device.

## Billing Information

- App: Free
- In-App Billing: None
- Subscription: None
- Displayed Ads: Yes (Google AdMob banner ads are displayed at the bottom of the screen)
- There are no mechanisms to directly collect money from users other than through advertising.

In Google Play Console, under "App Content" → "Ads," select "Show ads in your app." I will not set up "Monetization" → "In-app purchases".