Comparison

CalcFlex vs FormulaPad

Price, ratings, monetisation and update history for both apps, side by side β€” with what reviewers say about each.

Head to head
About

CalcFlex

Read full description

Discover CalcFlex: Flexible, Free and Ad-Free Calculator App! Unlock the full potential of your calculations with CalcFlex, the flexible calculator app designed to cater to all your needs. Whether you're dealing with complex equations, unit conversions, financial calculations, or scientific formulas, CalcFlex has got you covered. Key Features: Multiple Calculators in Parallel: Seamlessly switch between different calculators for efficiency. Built-in Tools: Access unit converters, finance calculators, math and physics equations all in one app. Custom Equations: Create, save, and reuse your own equations with specific variables tailored to your needs. User-Friendly Design: Start with the familiar calculator layout, free to customize based on preference. Completely Free: No ads, no hidden fees, just pure calculating power. Download CalcFlex now and experience the freedom of a truly flexible and comprehensive calculator app!

About

FormulaPad

A local-first math notebook calculator for iPhone. Type natural formulas, reuse variables, and save calculations as notes. Includes practical templates and unit conversions for everyday math needs.

Highlights
  • Natural formula input
  • Variable reuse
  • Calculation history
  • Math notes
  • Practical templates
  • Unit conversion
  • Function plotting
Features
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FormulaPad is a local-first math notebook calculator for iPhone. Type natural formulas, reuse variables, keep calculation history, save useful results as notes, and use practical templates for everyday math. FormulaPad is built for students, teachers, engineers, and anyone who wants calculations to stay organized after the answer appears. Key features: - Natural formula input and scientific functions - Variables such as price = 299 and count = 12 - Calculation history with reuse and favorites - Math notes with title, category, remarks, and result - Templates for percentage, discount, compound interest, BMI, loan payment, average, triangle area, and speed - Unit conversion for length, weight, area, volume, temperature, time, and speed - Simple function plotting for expressions such as x^2 and sin(x) - Local data storage, no account required - FormulaPad Pro is a one-time unlock, not a subscription FormulaPad does not include ads, third-party analytics, tracking, or a custom account system.

Screenshots

CalcFlex4 screens
FormulaPad4 screens

Verdict

The call

The clearest difference is update cadence: CalcFlex at every 9 days against FormulaPad's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. CalcFlex sells 3 one-off in-app purchases and FormulaPad sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CalcFlex ships an update every 9 days, FormulaPad every 2 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

Scorecard1 real difference Β· 7 level
CalcFlex versus FormulaPad: the parameters behind the verdict, then further details
ParameterCalcFlexFormulaPad
PriceFreeFree
Positive reviewsβ€”100.0% of reviews
Update frequencyEvery 9 days β€” betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
Monetizationβ€”Free with in-app purchases
DevicesiPhoneiPhone
Requires iOS17.017.0
Further details β€” not scored
Size2 MB3 MB
Age rating4+4+
DeveloperDaniel Chiu Loong Ng小倩 徐

In-app purchases

3 purchases

CalcFlex

One-time3
  • +3 New Variables2 variants$1.99
  • +20 New Equation Slots2 variants$1.99
  • +1 New Calculator2 variants$3.99
1 purchases

FormulaPad

One-time1
  • FormulaPad Pro$0.99

Questions

Is CalcFlex free?
CalcFlex is free to download, with in-app purchases available.
Is FormulaPad free?
FormulaPad is free to download, with in-app purchases available.
Do CalcFlex or FormulaPad have ads?
Neither CalcFlex nor FormulaPad shows ads.
Which is updated more often, CalcFlex or FormulaPad?
CalcFlex ships an update every 9 days, and FormulaPad every 2 months. Most recently, CalcFlex was updated on October 6, 2026 and FormulaPad on October 15, 2026.

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