Comparison

ShoppingCalculator byNSDev vs Geek Math

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

Head to head
About

ShoppingCalculator byNSDev

Features
Read full description

This app was created to easily calculate discount items when shopping. You can calculate immediately with fixed value buttons such as 5%, 10%, 20%, 30%, 40%, 50% 60%. Other than that, I made it possible to select from 1% -99% selection screen. You can subtract it from the total amount with the + - buttons on the left and right of the amount. History can be displayed. When you enter a budget, we automatically calculate the balance that can be purchased. Use the AC button to make it all 0s and history is cleared. The C button sets the current item's amount to 0. The BS button deletes the current amount by one digit. The currency is the Japanese yen. Please fill out the request in the review. We will correspond as much as possible.

About

Geek Math

This calculator app features an intuitive column layout for multiple equations, allowing real-time modification of numbers and operators. It offers interactive linking of numbers and a unique lock feature to protect important values.

Highlights
  • Intuitive column layout
  • Real-time equation modification
  • Linked numbers for interactive calculation
  • Lock feature for number protection
  • Multi-line display
  • Theme selection
Features
Read full description

* Intuitive column layout displaying multiple equations on the same screen * Ability to modify operands and operators at any time * Linked numbers that calculate interactively in real-time The calculator's display and operation have been redesigned from the ground up. Calculator Features: - Multi-line Display: Equations are clearly displayed line by line, with the length of numbers and operators automatically adjusted to fit the screen width. - Equation Modification: Freely select and change numbers within equations. Operators can also be modified to alter the results. - Linking and Interaction: Numbers in links update interactively. A single number can be linked to multiple numbers. - Theme Selection: Choose from white, black, brown, and more than three different theme colors. - Delete Functions: "AC" for full clear, erasing the entire calculator screen. "R" for line clear, removing one line from the list. "C" for clear, resetting a number to zero. "BS" for backspace, deleting the previous input. - Lock Feature: Replaces traditional memory functions with a more intuitive lock feature. Protect numbers you don't want to delete with a single button lock. - Save Previous Equations: Even if you restart your device, leave the application unopened for an extended period, or switch between applications, previous equations will be saved. Give the Geek Calculator a try! Perhaps this is the perfect calculator application for you.

Screenshots

ShoppingCalculator byNSDev3 screens
Geek Math4 screens

Verdict

The call

The clearest difference is in-app purchases: ShoppingCalculator byNSDev at none against Geek Math's 1. ShoppingCalculator byNSDev also leads on ads (none vs shown). Geek Math's advantage is update cadence (every 10 months vs every 39 months) and iOS requirement (12.0 vs 15.6). On price 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. Geek Math sells 1 one-off in-app purchase. ShoppingCalculator byNSDev asks for nothing beyond the download.

UpkeepUpdate frequency

ShoppingCalculator byNSDev ships an update every 39 months, Geek Math every 10 months. The most recent releases landed on October 8, 2026 and October 24, 2026 respectively.

Scorecard4 real differences · 6 level
ShoppingCalculator byNSDev versus Geek Math: the parameters behind the verdict, then further details
ParameterShoppingCalculator byNSDevGeek Math
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 39 monthsEvery 10 months — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size4 MB29 MB
Age rating4+4+
DeveloperNIHON SYSTEM DEVELOPER CORPORATIONQQ TSUBASA

In-app purchases

None

ShoppingCalculator byNSDev

No in-app purchases

1 purchases

Geek Math

One-time1
  • Premium No ad & more math rows$1.99

Questions

Is ShoppingCalculator byNSDev free?
ShoppingCalculator byNSDev is free to download, with no in-app purchases.
Is Geek Math free?
Geek Math is free to download, with in-app purchases available.
Do ShoppingCalculator byNSDev or Geek Math have ads?
Geek Math shows ads; ShoppingCalculator byNSDev does not.
Which is updated more often, ShoppingCalculator byNSDev or Geek Math?
ShoppingCalculator byNSDev ships an update every 39 months, and Geek Math every 10 months. Most recently, ShoppingCalculator byNSDev was updated on October 8, 2026 and Geek Math on October 24, 2026.

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