Comparison

Patterns Calc Pro vs Simple Noise Meter

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

Head to head
About

Patterns Calc Pro

A visually customizable calculator with a focus on ease of use and quick calculations. Offers one-handed mode, adjustable colors, and intuitive memo functions. Supports iPad and provides a simple interface for everyday math needs.

Highlights
  • One-handed mode
  • Automatic color changes
  • Easy screenshot sharing
  • Multiple beautiful patterns
  • Large, readable numbers
  • Intuitive memo function
  • Drag and drop button customization
Features
Read full description

Features of Patterns Calc Pro ◉ One-handed mode ◉ Change the color automatically ◉ Share your screenshot easily ◉ Many beautiful patterns ◉ Large, easy-to-read numbers ◉ Easy to press buttons ◉ Easy "memo" function ◉ Drag and drop the "memo" button for easy calculation. ◉ Drag and drop the "%" button to easily change the value to include tax. ◉ Switch between "+", "-", "×", "÷" as many times as you like even if you make a mistake ◉ Swipe right to correct. ◉ Swipe left to correct the corrected a single number. ◉ You can change the color of the buttons. ◉ Change button color from black ⇄ white. ◉ iPad compatible! What you can't do The calculation method is not a "formula" method. The calculation method is not an "equation" method. The calculation is done in order, so「 x, ÷」 is not calculated first until you press "=" exsample is ( 10 + 20) × 3 = 90. Maximum numbers will be performed up to 9,999,999,999 or -9,999,999,999 to damage the screen design For those who are not like at patterns, we have created a calculator called Newmo Calc,It's a simple colorful calculator so please use that. More info ◉ satomic apps web site https://satomic.net ◉ satomic twitter twitter https://twitter.com/satomic13

About

Simple Noise Meter

Measure ambient sound levels in decibels with this straightforward utility. It provides a simple interface to start, stop, and reset noise measurements, offering a supplementary tool for understanding your environment's acoustics.

Highlights
  • Real-time decibel measurement
  • Start, stop, and reset functions
  • Calibration for accuracy
  • Supplementary measurement tool
  • Easy-to-use interface
Features
Read full description

Simple and easy-to-use noise level meter app. It displays the noise level of your surroundings in decibels. ● How to use Tap the “START” button to start measurement. Tapping the “STOP” button pauses the measurement, and pressing the “START” button again resumes the measurement. Reset can be done by tapping the button at the bottom of the screen. ● Notes Smartphones are not equipped with the high-performance microphones found in actual noise meters. Therefore, it may not be able to recognize very loud sound, or there may be an error with the actual sound level meter value. Please use it as a supplementary tool only. If you have an actual sound level meter, you can adjust the value to match your noise meter by using the calibration function in the app. To calibrate, tap the +- icon in the lower left corner of the screen to display the setting screen.

Screenshots

Patterns Calc Pro3 screens
Simple Noise Meter4 screens

Verdict

The call

The clearest difference is price: Simple Noise Meter at Free against Patterns Calc Pro's $12.99. Patterns Calc Pro's advantage is review sentiment (100% vs 57%) and in-app purchases (none vs 2). On update cadence, device support and iOS requirement 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

Simple Noise Meter is free to download; Patterns Calc Pro costs $12.99 up front. Simple Noise Meter sells 2 one-off in-app purchases. Patterns Calc Pro asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
Patterns Calc Pro versus Simple Noise Meter: the parameters behind the verdict, then further details
ParameterPatterns Calc ProSimple Noise Meter
Price$12.99Free — better
Rating—4.0 (1 ratings) — better
Positive reviews100.0% of reviews — better57.1% of reviews
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 2 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size105 MB42 MB
Age rating4+4+
DeveloperHikaru SatomiNAOYA ONO

Customer experience

Patterns Calc Pro

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Simple Noise Meter

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews7 reviews
Positive57.1%
Neutral14.3%
Negative28.6%

In-app purchases

None

Patterns Calc Pro

No in-app purchases

2 purchases

Simple Noise Meter

One-time2
  • Support Developer$0.99
  • Remove ads$3.99

Questions

Is Patterns Calc Pro free?
Patterns Calc Pro costs $12.99, with no in-app purchases.
Is Simple Noise Meter free?
Simple Noise Meter is free to download, with in-app purchases available.
Do Patterns Calc Pro or Simple Noise Meter have ads?
Simple Noise Meter shows ads; Patterns Calc Pro does not.
Which is updated more often, Patterns Calc Pro or Simple Noise Meter?
Patterns Calc Pro ships an update every 2 months, and Simple Noise Meter every 2 months. Most recently, Patterns Calc Pro was updated on November 3, 2026 and Simple Noise Meter on November 3, 2026.

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