Comparison

PrefixCalc vs TextMath

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

Head to head
About

PrefixCalc

Features
Read full description

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

TextMath

Features
Read full description

TextMath redefines how calculators work. No need to memorize complex button sequences - just input in natural language and get instant results. 【Core Features】 • Multi-tab management for organized calculations • Natural language input - type "15% of 200" or "100 USD to EUR" • Real-time calculation display with paper-style interface • Smart toolbar with mathematical and currency symbols • Supports basic math, percentages, currency & unit conversion • Automatic data saving and offline operation • Dark mode support 【Perfect For】 • Daily shopping calculations • Travel currency exchange • Work reports and data analysis • Students learning mathematics 【Technical Excellence】 • Precise calculation engine • Optimized performance • Local data storage for privacy • Regular updates Through natural language input and paper-style interface design, TextMath brings calculation back to its essence, becoming an extension of your thinking process. Download TextMath now and experience a different way of calculating.

Screenshots

PrefixCalc2 screens
TextMath4 screens

Verdict

The call

The clearest difference is in-app purchases: PrefixCalc at none against TextMath's 1. PrefixCalc also leads on iOS requirement (12.0 vs 15.1). 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. TextMath sells 1 one-off in-app purchase. PrefixCalc asks for nothing beyond the download.

Scorecard2 real differences · 4 level
PrefixCalc versus TextMath: the parameters behind the verdict, then further details
ParameterPrefixCalcTextMath
PriceFreeFree
Update frequency—Every 5 days
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size28 MB41 MB
Age rating4+4+
DeveloperYONAGARE LABMHOST LTD

In-app purchases

None

PrefixCalc

No in-app purchases

1 purchases

TextMath

One-time1
  • Unlimited Pages$1.99

Questions

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

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