Editable calculator

An editable calculator that lets you change the input, and keep the work.

Build the calculation once, then adjust the assumptions instead of clearing the page and typing everything again.

App StoreGoogle Play
Local-first calculations
iOS, Mac & Android

Loan & Down Payment Comparison

Edit the home price and see the loan amount adjust instantly

Property Purchase Price$450,000.00
Down Payment (20%)$90,000.00
= $450,000.00 × 20%
Required Loan Amount$360,000.00
= $450,000.00 - $90,000.00
Loan Origination Fee (1%)+$3,600.00
= $360,000.00 × 1%
Estimated Legal & Closing$4,200.00
Total Upfront Cash Needed
$97,800.00
Why it fits

A calculator for questions that change

When the price, rate, or quantity moves, the useful part is seeing what else changes with it.

01Edit where it lives

Common calculator

Inputs are often hidden behind a reset-and-retype cycle.

FlexiCalc

Tap the value or label directly on the page.

02Keep dependencies visible

Common calculator

A final number can hide which assumption produced it.

FlexiCalc

Keep linked rows and intermediate totals in view.

03Compare the next case

Common calculator

Testing a second option can mean duplicating the whole calculation.

FlexiCalc

Change a source value and inspect the new outcome.

Direct Tap-to-Edit

Any number, formula, or label on the page is directly clickable and editable.

Dynamic Dependency Links

Formulas reference previous line items seamlessly, building a live calculation chain.

Save as Reusable Template

Turn your recurring calculation structures into one-tap templates.

How an editable calculator works

Change the input, keep the work

Build the calculation once, then adjust the assumptions instead of starting over.

  1. 01

    Set up the page

    Put inputs, labels, and formulas in the order you can review.

  2. 02

    Edit a source value

    Tap a price, rate, or quantity directly where it appears.

  3. 03

    Check the cascade

    Related totals update so you can compare the next option.

Designed for Real-World Tasks

Calculate with Context & Clarity

Mortgage & Loan Scenarios

Finance

Compare monthly payments with 15% vs 20% down payment or varying interest rates.

Purchase Price - Down Payment -> Loan Amount -> Monthly Payment

Sales & Tiered Discounts

Shopping

Test different promo codes, volume discounts, and shipping thresholds.

Retail Price - 15% Promo - $10 Voucher + Tax

Cost Estimation & Quoting

Business

Adjust billable hours and material costs while staying on a live call with a client.

Labor (hrs * rate) + Materials + Contingency buffer

Event & Party Budgeting

Events

Change guest counts and see per-head catering and venue totals adjust instantly.

Guest Count * Meal Cost + Venue Deposit + Drinks
Guides & Tutorials

Explore Detailed Walkthroughs

View all docs

Editable Calculator Guide

Deep dive into building reusable, editable calculation pages for complex numbers.

Read Guide

Core Features & Navigation

Learn how cascade recalculation and formula references work under the hood.

Read Guide

Quote & Cost Calculator Guide

How to build commercial client quotes that adjust with scope changes.

Read Guide
Guides & Tutorials

Continue with a calculation page

Compare changing scenarios

Link variables on an editable page, then change rates, volumes, or prices to compare different outcomes without rebuilding the model.

Explore feature

A budget you can revise

Plan income, bills, flexible spending, and savings on an editable budget page that you can revise as the month changes.

Explore feature

Soulver alternative

Compare Soulver natural-language sheets with FlexiCalc editable rows, touch controls, Android access, pages, and templates before you switch.

Explore feature
FAQ

Frequently Asked Questions

Everything you need to know about calculating with FlexiCalc

What makes FlexiCalc an editable calculator?
Unlike basic calculators where numbers vanish into a history log, FlexiCalc presents calculations as an editable canvas. You can jump back to any previous step, alter a value, and watch all linked formulas update automatically.
Can I reference a result from several lines above?
Yes. Formulas can reference earlier line items or subtotals. When the parent number is modified, all dependent calculations cascade and recalculate instantly.
How is this different from an Excel or Google spreadsheet?
Spreadsheets require complex grid layouts and are difficult to use on touchscreen phones. FlexiCalc is purpose-built for mobile with clean vertical layout, large touch targets, and zero syntax clutter.
Is my data saved automatically?
Yes, every edit is saved locally in real time. You can close the app anytime and pick up exactly where you left off.
FlexiCalc

Make every calculation clear, editable, and reusable

Download FlexiCalc to model budgets, loans, quotes, and everyday decisions on pages that update with you.

App StoreGoogle Play