Comparison

Note Calculator vs 4

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

Head to head
About

Note Calculator

This app allows you to perform calculations by writing equations in a text format, similar to a notebook. It supports variables, grouping, and saves your work as text files for easy sharing.

Highlights
  • Text-based calculation input
  • Supports variables and grouping
  • Saves calculations as text files
  • Easy sharing with other apps
  • Improved percentage calculations
Features
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Note Calculator is a text-based calculator. Sometimes, performing calculations involving multiple equations can be challenging with a basic calculator, right? Using an app like Excel might feel too cumbersome and heavy for such tasks. Now, with Note Calculator, there's no need to worry. Simply write down your equations as if you were jotting them in a notebook, and it will automatically calculate them for you. You don't need to remember your calculations and results either. Your work is saved as text, which can be stored as a file and shared with any program that supports text. It couldn't be easier! Additionally, it supports variables, enabling you to perform calculations similar to simple programming: a = 3 b = 2 c = a + b Is it hard to remember or input variables? With a simple touch, you can select variables from a list or easily add new ones. Plus, you can group variables using blocks, allowing for even more advanced calculations. Key Features: - Text-based calculator - Supports variables for more complex calculations with ease! - Saves all calculations and results to a file - Supports grouping with blocks (for advanced calculations) - Easily share calculations and results with other apps (Message, Whatsapp, KakaoTalk) - Show calculation results up to the current cursor position - Percentage calculation improvement (e.g. $100 - 25% = $75)

About

4

Features
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Information at your fingertips! This app gives you direct access to your account balance, location and contract information. It also gives you the ability to store and process payment and request service work and deliveries directly through the app.

Screenshots

Note Calculator4 screens
43 screens

Verdict

The call

The clearest difference is price: 4 at Free against Note Calculator's $0.99. 4 also leads on iOS requirement (12.2 vs 15.0). Note Calculator's advantage is update cadence (fortnightly vs every 7 months). On 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

4 is free to download; Note Calculator costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Note Calculator ships an update fortnightly, 4 every 7 months. The most recent releases landed on October 4, 2026 and October 1, 2026 respectively.

Scorecard3 real differences · 7 level
Note Calculator versus 4: the parameters behind the verdict, then further details
ParameterNote Calculator4
Price$0.99Free — better
Rating5.0 (4 ratings) — better—
Positive reviews86.4% of reviews—
Number of ratings4 — better—
Update frequencyFortnightly — betterEvery 7 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.012.2 — better
Further details — not scored
Size5 MB56 MB
Age rating4+4+
DeveloperwoojooinRural Computer Consultants, Inc.

In-app purchases

None

Note Calculator

No in-app purchases

None

4

No in-app purchases

Questions

Is Note Calculator free?
Note Calculator costs $0.99, with no in-app purchases.
Is 4 free?
4 is free to download, with no in-app purchases.
Do Note Calculator or 4 have ads?
Neither Note Calculator nor 4 shows ads.
Which is updated more often, Note Calculator or 4?
Note Calculator ships an update fortnightly, and 4 every 7 months. Most recently, Note Calculator was updated on October 4, 2026 and 4 on October 1, 2026.

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