Comparison

PrefixCalc vs Calculator

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

Head to head
About

PrefixCalc

Features
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This calculator supports Metric‑prefix such as kilo and giga. The calculator supports quetta (10^30) and quecto (10^-30), which were added in 2022. Main Functions ・Support for arithmetic operations (+ - ×÷) ・Results converted to Japanese numerals for display ・Delete one character at a time with the "DEL" button  Press and hold to delete all ・Press and hold to copy calculation formulas and results  English (Short scale, Long scale) and  Chinese numerals can also be selected. ・Calculations that include prefixes such as 2M+1k, 2M×1μ, etc. Note: ・Very large numbers that exceed 200 digits may be rounded off for display and calculation purposes.  Please note this when precision is required. ・Short scale and Long scale are currently supported up to 10^198. ・Kanji notation is supported up to 10^72.  If it is greater than the number, it will be displayed in Arabic numerals.

About

Calculator

Features
Read full description

Calculator - SLOX is a simple yet powerful calculator app with a beautiful dark interface. FEATURES: • Basic arithmetic operations: +, −, ×, ÷ • Percentage calculations • Plus/minus toggle • Decimal point support • Clear and delete functions • Clean, modern dark design • Haptic feedback for button presses HIGHLIGHTS: • No permissions required • Works completely offline • 15 languages supported • No ads • Battery efficient • Fast and responsive Perfect for everyday calculations. Download now!

Screenshots

PrefixCalc2 screens
Calculator3 screens

Verdict

The call

PrefixCalc and Calculator are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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.

ScorecardNo meaningful differences
PrefixCalc versus Calculator: the parameters behind the verdict, then further details
ParameterPrefixCalcCalculator
PriceFreeFree
Update frequency—Every 3 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size28 MB19 MB
Age rating4+4+
DeveloperYONAGARE LABSEOKWON YANG

In-app purchases

None

PrefixCalc

No in-app purchases

None

Calculator

No in-app purchases

Questions

Is PrefixCalc free?
PrefixCalc is free to download, with no in-app purchases.
Is Calculator free?
Calculator is free to download, with no in-app purchases.
Do PrefixCalc or Calculator have ads?
Neither PrefixCalc nor Calculator shows ads.

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