Comparison

Calta vs PuchCalc

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

Head to head
About

Calta

This calculator app offers advanced features like equation display, calculation history, and redo/undo functionality for easier use. Customize backgrounds and button shapes, and perform tax calculations with adjustable rates. It supports up to 20 digits and respects order of operations.

Highlights
  • Equation display
  • Calculation history
  • Redo and Undo functions
  • Customizable background
  • Customizable button shape
  • Tax calculation
  • Order of operations support
Features
Read full description

Caltaでは、履歴の再利用・RedoやUndoなど独自の機能を持っていますが、使い方は簡単でこれらの機能は電卓をより便利にしてくれます。 Caltaには四則演算に加え様々な優れた機能があります。 ・数式が表示される ・履歴リスト ・好きな背景に変更 ・ボタンの形状を変更 ・税計算ができる ・演算の優先順位を考慮:例)「1 - 2 × 3 = -5」 ・最大で20桁の有効桁数 ・数式のRedo, Undo 【履歴リスト】 「時計マークの履歴ボタン」を押すことで、過去の計算を閲覧することができます。それぞれの計算をタップすることで「数式の答え」をペーストできます。また、長押しすることで「数式のペースト」「名前の変更」ができます。 【背景の変更】 「歯車マークの設定ボタン」「背景を変更」からフォトライブラリの画像から好きな画像を選択することができます。また、一部分のみをくり抜くことができます。 【ボタンの形状を変更】 「歯車マークの設定ボタン」「ボタンの形状を四角にする」からボタンの形状を丸と四角に切り替えることができます 【税計算】 「税」ボタンを押すことで「税込」、長押しすることで「税抜」の計算ができます。また、設定から税率を8%と10%に切り替えられます。 【数式のRedo, Undo】 左右の矢印を押すことで、数式を一個前の状態に戻したり進めたりすることができます。

About

PuchCalc

Features
Read full description

<Fashionable function> You can choose the design from 13 themes. You can also change the shape and font of the buttons, expanding the range of designs. <Convenient for shopping> Just add them in the order of purchase, and the total amount will be displayed in the history. ・In parentheses are tax-included ・When automatic recalculation is on, the calculation history can be recalculated.  Even if you add it by mistake, it will be automatically recalculated by deleting the wrong line. ・Consumption tax calculation is also displayed automatically. <Calculation history function> The calculation remains as a history and can be reconfirmed after the calculation. The calculation history can be shared externally, and can be sent to e-mail, Twitter, etc. Features) ・Fashionable function:You can choose the overall design, button shape and font. ・Calculation history function:The calculation remains as a calculation history. ・Calculation history sharing function:The calculation history can be sent to an external compatible app. ・Compatible with iPad ・Language support:It is displayed in the supported languages according to the set languages of Japanese, English, and iOS. *Advertisement will be displayed. *Advertisement non-display PuchCalc Pro is also available, please use it.

Screenshots

Calta4 screens
PuchCalc4 screens

Verdict

The call

The clearest difference is update cadence: Calta at every 3 days against PuchCalc's monthly. Calta also leads on iOS requirement (11.0 vs 14.1). 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

Calta ships an update every 3 days, PuchCalc monthly. The most recent releases landed on June 4, 2026 and September 15, 2026 respectively.

Scorecard2 real differences · 6 level
Calta versus PuchCalc: the parameters behind the verdict, then further details
ParameterCaltaPuchCalc
PriceFreeFree
Positive reviews100.0% of reviews—
Update frequencyEvery 3 days — betterMonthly
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.0 — better14.1
Further details — not scored
Size23 MB5 MB
Age rating4+4+
DeveloperHiroki OkaJutaro Kimura

In-app purchases

None

Calta

No in-app purchases

None

PuchCalc

No in-app purchases

Questions

Is Calta free?
Calta is free to download, with no in-app purchases.
Is PuchCalc free?
PuchCalc is free to download, with no in-app purchases.
Do Calta or PuchCalc have ads?
Both Calta and PuchCalc show ads.
Which is updated more often, Calta or PuchCalc?
Calta ships an update every 3 days, and PuchCalc monthly. Most recently, Calta was updated on June 4, 2026 and PuchCalc on September 15, 2026.

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