CalcLab: Smart Unit Converter

$<5k revenue, 4.4 rating

App Tracking Permission
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Onboarding flow, Paywall & Inside the App

Watch the full screen-by-screen UX video of CalcLab: Smart Unit Converter with onboarding, paywall, and every core flow.

Utility splash screen displaying an AI QuickSolver label and a central grid of mathematical and measurement icons.
Permission request modal for AI QuickSolver asking to track activity across other apps, with Ask App Not to Track and Allow buttons.
Paywall screen offering a three-day free trial with a hero illustration of a scanning interface and a Free trial button.
Paywall screen featuring a sketchpad mockup, a three-day free trial toggle, and a free trial call-to-action button.
Paywall screen with a central conversion app mockup, a three-day free trial toggle, and a 0$ Free trial button.
App Store subscription confirmation modal for AI QuickSolver showing a 3-day free trial and a Confirm with Side Button action.
Purchase confirmation screen displaying a success modal with an OK button over subscription options for a math-solving app.
Tool dashboard displaying grouped sections for daily life utilities and unit conversion grids, with a bottom navigation bar.
Data statistics calculator screen with a sample data input field, statistical result labels, and a bottom numeric keypad.Unlock Pro
Data statistics screen displaying calculated metrics such as total sum, average, and standard deviation for sample data.Unlock Pro
Date calculation form with three input fields and a validation error stating Date A must be earlier than date B.Unlock Pro
Date calculation form with stacked input fields and a bottom-anchored date picker modal displaying May 16, 2012.Unlock Pro
Date calculation form showing filled Date A and Date B inputs along with the calculated interval days and a validation helper text.Unlock Pro
Health measurement form with input fields for height, weight, gender, and age, accompanied by a numeric keypad.Unlock Pro
Health measurement form with input fields for height, weight, age, and a gender selection modal open at the bottom.Unlock Pro
Health measurement form displaying input fields for height, weight, gender, and age, with calculated BMI and BMR results at the bottom.Unlock Pro
Currency exchange rate calculator showing input fields for CNY and USD with a numeric keypad below.Unlock Pro
Currency selection modal overlaying an exchange rate converter, with a search input and a vertical list showing CNY selected.Unlock Pro
Currency exchange rate screen showing USD to EUR conversion with stacked input cards and a swap icon.Unlock Pro
Angle conversion screen displaying stacked degree, radian, and gradian fields with a filled input value and a bottom numeric keypad.Unlock Pro
Length unit conversion screen showing stacked meter and centimeter input fields with a central swap button and a numeric keypad.Unlock Pro
Length conversion tool with input fields for meters and centimeters, and a bottom modal list with meters selected.Unlock Pro
Storage unit conversion screen showing KB set to one and bytes set to 1024, with a central swap icon and a numeric keypad.Unlock Pro
System permission modal requesting camera access for AI QuickSolver, displayed over a dark camera viewfinder with Allow and Don't Allow buttons.Unlock Pro
Math solver camera viewfinder screen displaying a document with math problems, with the PhotoSolve tab selected and a shutter button.Unlock Pro
PhotoSolve result screen displaying a captured image of math equations with a timestamp and a back button.Unlock Pro
Math problem list containing a production optimization word problem, a summation expression, and a quadratic equation.Unlock Pro
Writing board editor screen featuring a dot-grid canvas, a bottom tool palette with drawing instruments, and vertical floating action buttons on the right.Unlock Pro
Editor screen featuring a dot-grid canvas with a bottom drawing toolbar and right-aligned action buttons including brush and text tools.Unlock Pro
Writing board editor displaying a digital canvas with handwritten notes, a bottom tool menu, and a right-aligned tool stack.Unlock Pro
Editor screen displaying a writing board with a central handwritten note, floating tool buttons on the right, and a bottom toolbar with eraser settings.Unlock Pro
Editor screen featuring a dot-grid writing board with floating tools and a centered modal window offering eraser selections.Unlock Pro
Editor screen with a writing board canvas, a central ruler tool, and surrounding vertical and horizontal toolbars for drawing and text.Unlock Pro
Digital writing board editor featuring a dot grid background, a central ruler, and floating tool menus for drawing instruments and adding text.Unlock Pro
Writing board editor displaying a dot grid canvas with a digital ruler, floating brush and text tools, and a bottom toolbar.Unlock Pro
Writing board editor displaying freehand drawings, a digital ruler, a brush tool, and a bottom toolbar for drawing instruments.Unlock Pro
Digital writing board editor displaying a central canvas with a diagonal digital ruler, floating brush settings menu, and drawing tools.Unlock Pro
Writing board editor displaying a central grid canvas with freehand scribbles, a digital ruler, right-side tool menus, and a bottom tool dock.Unlock Pro
Color selection modal with the Grid tab selected, displaying a color palette and an opacity slider set to 100%.Unlock Pro
Color selection modal with a spectrum tab selected, an opacity slider set to 100%, and a writing board background.Unlock Pro
Color adjustment modal on a writing board screen displaying RGB sliders with numerical values and a hex color code input.Unlock Pro
Writing board editor screen with a text input field, abstract brush strokes, floating tool buttons, and a system keyboard.Unlock Pro
Page management screen with a close button and a card for creating a new page.Unlock Pro
Writing board editor displaying a dot-grid canvas with a diagonal ruler and floating action buttons for drawing, text, and new pages.Unlock Pro
Writing board editor with a blank canvas, a diagonal ruler graphic, and a vertical stack of floating action buttons in the bottom right corner.Unlock Pro
Calculator screen displaying a rating modal for AI QuickSolver with star selection, Cancel, and Submit buttons.Unlock Pro
Calculator app interface with a rating modal overlay asking Enjoying AI QuickSolver with submit and cancel buttons.Unlock Pro
Calculator app screen displaying a feedback modal with star ratings, Write a Review and OK buttons, and a bottom navigation bar.Unlock Pro
Calculator home screen with a numeric keypad, display area showing zero, and bottom navigation tabs for Tool, PhotoSolve, Calculator, and Writing board.Unlock Pro
Calculator home screen displaying a calculation and numeric keypad, with the Calculator tab selected in the bottom navigation bar.Unlock Pro
Scientific calculator screen displaying the input sin90 and result with a function keypad and bottom navigation bar.Unlock Pro
Calculator history screen displaying past calculations in a list, a recent calculation card, and a clear history action.Unlock Pro
Calculator history screen displaying a confirmation modal to clear all history, with Cancel and OK buttons.Unlock Pro
Calculator history screen in an empty state with a top navigation bar, a trash icon, and a vertical column of blue operator buttons on the right.Unlock Pro
Tool dashboard displaying card-based sections for daily life utilities and unit conversion categories with a back button in the header.Unlock Pro
Settings screen featuring a membership banner, audio preferences, tactile feedback toggle, and grouped list options for keyboard configuration, legal notices, and feedback.Unlock Pro
Keyboard settings screen with operator toggles for multiplication and division, alongside three calculator theme preview cards.Unlock Pro
Utility dashboard displaying a daily life section and a unit conversion grid, with the Tool tab selected in the bottom navigation bar.Unlock Pro
Calculator app home screen displaying a numeric keypad with a selected calculator tab in the bottom navigation bar.Unlock Pro
Keyboard settings screen displaying two toggle controls for math symbols and a grid of three calculator theme preview cards.Unlock Pro
Terms of Service document reader displaying the Calculator User Of Terms with an update date and browser navigation controls.Unlock Pro
Feedback form with an email input field, a feedback description text area, and a Submit button.Unlock Pro

About CalcLab: Smart Unit Converter

An all-in-one utility app featuring a photo math solver, scientific calculator, unit converter, and various daily life calculation tools.

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