Comparison

IsI Calculator vs CalBasic

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

Head to head

★ 5.03 ratingsView app →

About

IsI Calculator

Features

Read full description

This app offers a complete calculator with many well-known features for your everyday calculations required. functions: addition subtraction multiplication Division Percent account Potentiation high 2 and 3 Since Version 1.2 the app is now useable on Apple Watch.

About

CalBasic

A straightforward calculator app designed for simplicity. It features color-coded buttons for easy identification and a clean interface. Ideal for quick calculations on your mobile device.

Highlights

Basic calculator functionality
Color-coded buttons
Simple and clean interface
Designed for quick calculations

Features

Read full description

A basic calculator with color coded buttons.

Screenshots

IsI Calculator2 screens

CalBasic1 screens

Verdict

The call

The clearest difference is update cadence: IsI Calculator at fortnightly against CalBasic's every 22 months. IsI Calculator also leads on iOS requirement (9.0 vs 15.0). 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

IsI Calculator ships an update fortnightly, CalBasic every 22 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 8 level

IsI Calculator versus CalBasic: the parameters behind the verdict, then further details
Parameter	IsI Calculator	CalBasic
Price	Free	Free
Rating	—	5.0 (3 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	3 — better
Update frequency	Fortnightly — better	Every 22 months
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPad, iPod, Apple Watch — better	iPhone, iPad, iPod
Requires iOS	9.0 — better	15.0
Further details — not scored
Size	15 MB	1 MB
Age rating	4+	4+
Developer	Dominic Barra	Arun Mahasenan

In-app purchases

None

IsI Calculator

No in-app purchases

None

CalBasic

No in-app purchases

Questions

Is IsI Calculator free?

IsI Calculator is free to download, with no in-app purchases.

Is CalBasic free?

CalBasic is free to download, with no in-app purchases.

Do IsI Calculator or CalBasic have ads?

Neither IsI Calculator nor CalBasic shows ads.

Which is updated more often, IsI Calculator or CalBasic?

IsI Calculator ships an update fortnightly, and CalBasic every 22 months. Most recently, IsI Calculator was updated on November 6, 2026 and CalBasic on November 3, 2026.