Comparison

Calculator Watch Pro Free vs ReadableCalc

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

Head to head
About

Calculator Watch Pro Free

Perform calculations directly on your wrist with this Apple Watch calculator. Syncs with your phone for continued work, offering standard and scientific modes. Customize themes to match your device.

Highlights
  • Perform calculations on Apple Watch
  • Syncs calculations with phone
  • Standard and scientific modes on phone
  • Customizable themes
  • Access history results
  • Degrees and Radians calculators
  • Copy and paste numbers
Features
Read full description

Calculator Watch Pro Free - First Calculator on Apple Watch! The most convenient way to use calculator is here. Now you can use the calculator on your wrist. With Calculator Watch Pro, you can choose theme of the calculator to match with your watch model. Anything you type on your watch will sync back and forth and appear on your phone, so you can continue work on the phone without re-typing allover again. Moreover you can enjoy both standard option or landscape scientific mode on your phone. ( *scientific mode not available on watch ) Features: • 3 themes are available for Free Version ( Up to 16 themes for Full Version! ) • 2 Modes are available: basic calculations in Standard Mode or Scientific Mode in landscape orientation • Access history results and use it as input ( Need upgrade to Full Version ) • Glances to view the latest result on your watch • Degrees and Radians calculators • Memory the result to use later • Copy and past numbers into display • Swipe finger to delete number one by one (This feature only available on the phone)

About

ReadableCalc

Features
Read full description

ReadableCalc is a calculator app that displays large numbers—like 3 trillion 500 billion—in readable units. It’s designed to make extremely large numbers more intuitive at a glance. Main Features • Supports four basic operations (+, −, ×, ÷) • Displays results in English numeric units for easy readability • Handles decimals and negative numbers • DEL button for deleting one character at a time (Long press to clear the entire expression) • Long press on expressions or results to copy • Tap on the “readable” result to toggle display between: • Short scale / Long scale / Kanji numerals Additional features in landscape mode: • “00”, “000”, and “0000” buttons for quickly adding zeros • “x²” and “x³” buttons for quick exponentiation Note: • Numbers exceeding 200 digits may be rounded due to calculation and display limitations. Please be cautious if you need high precision. • Short scale and Long scale support numbers up to 10^198. • Kanji numeral display supports up to 10^72. Larger numbers are shown in Arabic numerals instead.

Screenshots

Calculator Watch Pro Free4 screens
ReadableCalc3 screens

Verdict

The call

The clearest difference is in-app purchases: ReadableCalc at none against Calculator Watch Pro Free's 1. ReadableCalc also leads on update cadence (weekly vs every 6 weeks). Calculator Watch Pro Free's advantage is iOS requirement (8.2 vs 12.0). On price, ads 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. Calculator Watch Pro Free sells 1 one-off in-app purchase. ReadableCalc asks for nothing beyond the download.

UpkeepUpdate frequency

Calculator Watch Pro Free ships an update every 6 weeks, ReadableCalc weekly. The most recent releases landed on November 1, 2026 and November 8, 2026 respectively.

Scorecard3 real differences · 7 level
Calculator Watch Pro Free versus ReadableCalc: the parameters behind the verdict, then further details
ParameterCalculator Watch Pro FreeReadableCalc
PriceFreeFree
Rating2.3 (9 ratings) — better—
Positive reviews28.6% of reviews—
Number of ratings9 — better—
Update frequencyEvery 6 weeksWeekly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS8.2 — better12.0
Further details — not scored
Size11 MB28 MB
Age rating4+4+
DeveloperMuzeYONAGARE LAB

In-app purchases

1 purchases

Calculator Watch Pro Free

One-time1
  • Full Version include History Logs & 13 Extra Themes$0.99
None

ReadableCalc

No in-app purchases

Questions

Is Calculator Watch Pro Free free?
Calculator Watch Pro Free is free to download, with in-app purchases available.
Is ReadableCalc free?
ReadableCalc is free to download, with no in-app purchases.
Do Calculator Watch Pro Free or ReadableCalc have ads?
Neither Calculator Watch Pro Free nor ReadableCalc shows ads.
Which is updated more often, Calculator Watch Pro Free or ReadableCalc?
Calculator Watch Pro Free ships an update every 6 weeks, and ReadableCalc weekly. Most recently, Calculator Watch Pro Free was updated on November 1, 2026 and ReadableCalc on November 8, 2026.

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