Comparison

7gnuPrimeL∞R vs ReadableCalc

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

Head to head
About

7gnuPrimeL∞R

Features
Read full description

タイトル上段より [image→R]はボタン ・左に隣接する数字入力欄に奇数の数字を入力 ・仮に1を入力すると[range]1[~9]のように[範囲]が表示 ・これは1を含まない2~9の間の素数の[位置]を調べる ・上記のボタンを押す ・画面が右にスライドして結果が表示 ・結果は全て点の羅列である // ;;;;. ・これは左から// 2;3;5;7;9. を意味する ・起点が一桁までは補足として数字が下部に表示 ・二桁以降で素数の位置ではなく数字が知りたい場合は [Calc↓L]より調べる [Calc↓L]はボタン ・右に隣接する数字入力欄に奇数の数字を入力 ・仮に3を入力すると[range]9[~25]のように[範囲]が表示 ・これは11~25の間の素数を調べる意味(奇数) ・√9 = 3 ←この範囲を調べる→ √25 = 5 ・上記のボタンを押す ・画面が下部にスライドし結果が表示 ・Count:5のように素数の数も表記 [ゴミ箱]Alldeleteボタン ・テキスト文字を全て一括消去する ・メモリー記録などアプリで保存する機能はありませんのでご注意ください ・テキストは長押しでコピーやペーストが可能です

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

7gnuPrimeL∞R1 screens
ReadableCalc3 screens

Verdict

The call

The clearest difference is price: ReadableCalc at Free against 7gnuPrimeL∞R's $0.99. ReadableCalc also leads on iOS requirement (12.0 vs 14.2). On update cadence, 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

ReadableCalc is free to download; 7gnuPrimeL∞R costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly weekly. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

Scorecard2 real differences · 4 level
7gnuPrimeL∞R versus ReadableCalc: the parameters behind the verdict, then further details
Parameter7gnuPrimeL∞RReadableCalc
Price$0.99Free — better
Update frequencyWeeklyWeekly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS14.212.0 — better
Further details — not scored
Size3 MB28 MB
Age rating4+4+
DeveloperMasaru SasakiYONAGARE LAB

In-app purchases

None

7gnuPrimeL∞R

No in-app purchases

None

ReadableCalc

No in-app purchases

Questions

Is 7gnuPrimeL∞R free?
7gnuPrimeL∞R costs $0.99, with no in-app purchases.
Is ReadableCalc free?
ReadableCalc is free to download, with no in-app purchases.
Do 7gnuPrimeL∞R or ReadableCalc have ads?
Neither 7gnuPrimeL∞R nor ReadableCalc shows ads.
Which is updated more often, 7gnuPrimeL∞R or ReadableCalc?
7gnuPrimeL∞R ships an update weekly, and ReadableCalc weekly. Most recently, 7gnuPrimeL∞R was updated on November 3, 2026 and ReadableCalc on October 25, 2026.

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