Comparison

KetaKeta vs ReadableCalc

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

Head to head
About

KetaKeta

Read full description

KetaKeta is a simple multiple length arithmetic calculator with Flat UI. Features - Swipe left or right on screen to switch the themes. KetaKeta shipped with 6 color themes - Swipe down on screen to copy the displaying number to the pasteboard - Swipd up on screen to copy the number from the pasteboard - You can open this app by ketaketa: URL scheme

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

KetaKeta4 screens
ReadableCalc3 screens

Verdict

The call

The clearest difference is update cadence: ReadableCalc at weekly against KetaKeta's every 34 months. ReadableCalc also leads on iOS requirement (12.0 vs 15.6). 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

KetaKeta ships an update every 34 months, ReadableCalc weekly. The most recent releases landed on October 12, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 4 level
KetaKeta versus ReadableCalc: the parameters behind the verdict, then further details
ParameterKetaKetaReadableCalc
PriceFreeFree
Update frequencyEvery 34 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size1 MB28 MB
Age rating4+4+
DeveloperMasanori MikawaYONAGARE LAB

In-app purchases

None

KetaKeta

No in-app purchases

None

ReadableCalc

No in-app purchases

Questions

Is KetaKeta free?
KetaKeta is free to download, with no in-app purchases.
Is ReadableCalc free?
ReadableCalc is free to download, with no in-app purchases.
Do KetaKeta or ReadableCalc have ads?
Neither KetaKeta nor ReadableCalc shows ads.
Which is updated more often, KetaKeta or ReadableCalc?
KetaKeta ships an update every 34 months, and ReadableCalc weekly. Most recently, KetaKeta was updated on October 12, 2026 and ReadableCalc on October 7, 2026.

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