TriTab Calc Flex: Calculator
Tax, Tip, Split Bill & Percent
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
The base app is free for a limited time! Ad-free themes and scientific calculator tools are optional one-time purchases.
Three calculations, one clear screen.
TriTab Calc Flex gives you three independent calculator tabs—A, B, and C—so you can switch between figures without losing your results or history. It is useful for comparing prices, shopping, estimates, travel, and splitting a bill.
Key features
- Three independent calculator tabs
- Results and history retained for each tab
- Copy results from history
- +Tax for tax-inclusive prices
- -Tax for calculating the pre-tax amount
- 8%, 10%, or a custom tax rate
- Square root, square, and percentage
- Swipe to undo and redo
- Compare the total and difference across all three tabs
- Split bills with optional rounding
- English, Japanese, Simplified Chinese, and Traditional Chinese
Add only what you need
The one-time Ad-Free & Display Pack removes the banner ad and unlocks high-contrast and dark themes plus larger text.
The one-time Scientific Calculator Pack unlocks trigonometric and inverse trigonometric functions, log, ln, exponentials, square root, square, reciprocal, pi, e, DEG/RAD switching, and Night mode.
There is no monthly or annual subscription. Every purchase is one time only, and purchases can be restored in this app using the same Apple ID.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The app has been renamed from “TriTab Calc Lite” to “TriTab Calc Flex.”
The new name better reflects the flexibility to add the features you need through optional one-time purchases. Your calculation history, settings, and purchased features remain unchanged.
The developer, HIROKI MURAI, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- HIROKI MURAI
- Size
- 6.7 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 3 more
- English, Japanese, Simplified Chinese, Traditional Chinese
- Age Rating
13+
- 13+
- Contains
Advertising
- In-App Purchases
Yes
- Scientific Calculator Pack $1.99
- Display & Ad-Free Pack $2.99
- Copyright
- © 2026 HIROKI MURAI