Comparison

Basic Calc Plus vs Calta

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

Head to head
About

Basic Calc Plus

Features
Read full description

It is a calculator app basic for the iPhone. Set of sound and color settings, can be turned on and off of the consumption tax calculation. [Function] Four arithmetic operations % Calculation Memory facility 12-digit display Consumption tax calculation [Settings] Color: blue, yellow, red, green Sound: Normal, coins, punch, mute Consumption tax: ON, OFF Consumption tax rate:%

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
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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。

Screenshots

Basic Calc Plus3 screens
Calta4 screens

Verdict

The call

The clearest difference is update cadence: Calta at every 3 days against Basic Calc Plus's every 17 months. Calta also leads on iOS requirement (11.0 vs 17.6). 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

Basic Calc Plus ships an update every 17 months, Calta every 3 days. The most recent releases landed on October 3, 2026 and September 18, 2026 respectively.

Scorecard2 real differences · 6 level
Basic Calc Plus versus Calta: the parameters behind the verdict, then further details
ParameterBasic Calc PlusCalta
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 17 monthsEvery 3 days — better
AdsYesYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhoneiPhone, iPod — better
Requires iOS17.611.0 — better
Further details — not scored
Size5 MB23 MB
Age rating4+4+
DeveloperOsamu IshigamiHiroki Oka

In-app purchases

None

Basic Calc Plus

No in-app purchases

None

Calta

No in-app purchases

Questions

Is Basic Calc Plus free?
Basic Calc Plus is free to download, with no in-app purchases.
Is Calta free?
Calta is free to download, with no in-app purchases.
Do Basic Calc Plus or Calta have ads?
Both Basic Calc Plus and Calta show ads.
Which is updated more often, Basic Calc Plus or Calta?
Basic Calc Plus ships an update every 17 months, and Calta every 3 days. Most recently, Basic Calc Plus was updated on October 3, 2026 and Calta on September 18, 2026.

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