Comparison

Calculator HD Pro Lite vs Fast Write down

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

Head to head
About

Calculator HD Pro Lite

This app offers a user-friendly calculator with large buttons and extensive customization options. It features a dual-line display to see input and results simultaneously, saves your calculation history, and provides full scientific functions. Personalize layouts, themes, and even button symbols to suit your needs.

Highlights
  • Dual-line display
  • Calculation history
  • Full scientific functions
  • Customizable layouts and themes
  • Big buttons
  • Email history
Features
Read full description

A colorful calculator with big buttons, comprehensive features, and extensive customization. Used by millions. Supported by ads. SEE EVERY STEP ・Dual-line display - shows your input and result simultaneously ・Multi-line input for long equations ・Tap & hold to move the cursor or copy and paste where you want SAVE YOUR WORK ・History saves every calculation with time and date ・Label important calculations for easy reference ・Email single calculations or complete history ・Swipe down to review previous work CUSTOMIZE EVERYTHING ・6 layouts including extra-large button options ・10 color themes plus Dark Mode ・Adjustable font size and bold text ・Left-handed mode ・Show or hide features you don't need SCIENTIFIC FUNCTIONS ・Full scientific calculator when needed ・Memory buttons with values displayed ・Percentage and backspace buttons ・Automatic scientific notation ・VoiceOver accessibility OPTIONAL IN APP PURCHASES ・Today View Widget (iOS 17 and below) ・Multiple History Tapes ADDITIONAL FEATURES ・Customizable button symbols and decimal settings ・Multiple backspace button styles ・iPad Split View and 3D Touch support ・Gesture controls for quick access URL Scheme: calculatorhdprofree://

About

Fast Write down

Read full description

你是否有过瞬间的灵感在脑海中稍纵即逝、你是否有过简短的想法无法做简单的记录、你是否需要一款干净、整洁、能快速响应的记录软件,Fast Write down就是一款快速打开响应、无任何干扰、满足瞬间记录的软件,在这里没有花里胡哨的操作,让记录回归到最初的本质,一切只为简介、方便。 使用iPad配合Apple Pencil,效果更佳。 Have you ever had instant inspiration fleeting in your mind, have you ever had short thoughts that cannot be recorded simply, do you need a clean, tidy, and fast-response recording software, Fast Write down is a Quickly open the response, without any interference, and meet the instant recording software. There are no fancy operations here, and the recording returns to the original essence. Everything is just for brief introduction and convenience. Use an iPad with an Apple Pencil for even better results.

Screenshots

Calculator HD Pro Lite4 screens
Fast Write down3 screens

Verdict

The call

The clearest difference is update cadence: Fast Write down at every 3 weeks against Calculator HD Pro Lite's every 2 months. Fast Write down also leads on iOS requirement (11.0 vs 15.2). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calculator HD Pro Lite ships an update every 2 months, Fast Write down every 3 weeks. The most recent releases landed on October 17, 2026 and October 6, 2026 respectively.

Scorecard2 real differences · 8 level
Calculator HD Pro Lite versus Fast Write down: the parameters behind the verdict, then further details
ParameterCalculator HD Pro LiteFast Write down
PriceFreeFree
Rating4.6 (51K ratings) — better—
Positive reviews77.4% of reviews—
Number of ratings51K — better—
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.211.0 — better
Further details — not scored
Size47 MB75 MB
Age rating4+4+
DeveloperCider Software LLC玉波 刘

Bugs and requests

Calculator HD Pro Lite

Reported bugs

3 issues
  • Calculation errors with very large numbers
  • Crashes after recent update
  • Decimal point displayed as comma

Requested features

5 requests
  • Dark mode option
  • Ability to sync calculation history across devices
  • More advanced math functions (e.g. dms/dd)
  • Customizable button layout
  • Ability to disable ads without paying

Fast Write down

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Calculator HD Pro Lite

No in-app purchases

None

Fast Write down

No in-app purchases

Questions

Is Calculator HD Pro Lite free?
Calculator HD Pro Lite is free to download, with no in-app purchases.
Is Fast Write down free?
Fast Write down is free to download, with no in-app purchases.
Do Calculator HD Pro Lite or Fast Write down have ads?
Both Calculator HD Pro Lite and Fast Write down show ads.
Which is updated more often, Calculator HD Pro Lite or Fast Write down?
Calculator HD Pro Lite ships an update every 2 months, and Fast Write down every 3 weeks. Most recently, Calculator HD Pro Lite was updated on October 17, 2026 and Fast Write down on October 6, 2026.

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