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NumPad: Calculator Keyboard

by More Voltage

  • Productivity
  • Paid
  • Small & simple · 100
View on the App Store
Rating
4.2
232 ratings · US storefront
Top 96%among 73 Productivity apps
Last update
Oct 1, 2026
Version 2.1.1
Size
8 MB
Category
Productivity
Tracked since
Oct 10, 2026

Estimated revenue

A model estimate with a likely range, not a reported figure.

No estimate. Apps outside the grossing charts, and some countries, have no reliable rank-to-revenue curve, so we show nothing rather than a guess.

How this estimate is made

Rank: we take the app's best Top Grossing rank on the latest chart day. Category ranks are converted into an equivalent overall rank, because a #10 in Finance earns far less than a #10 overall.

Curve: that equivalent rank is read off a rank-to-revenue curve anchored on public company revenue and market-data reports for the US iPhone App Store.

Country: the curve is scaled per country (Japan is roughly a third of the US, Türkiye under 1%). Where we have no scale, such as China, there is no estimate.

Range: the likely range widens with country, category and chart depth. It is a plausible span, not a statistical confidence interval.

Not included: ads, payments outside the App Store, and any difference between gross sales and what the developer keeps. Low confidence means indirect data; medium means several independent sources agree.

Full method

Screenshots

As shown on the App Store listing.

About this app

Text from the App Store listing.

Type a number, get an answer.

NumPad puts a full numeric keypad and calculator right inside your iPhone keyboard. Type "1200*0.0825" and the answer floats above your cursor before you even reach for "=". Tap it to insert, or keep typing to refine.

LIVE MATH, WHILE YOU TYPE
Start any expression — "84.50*1.18", "250-20%", "3*12+40" — and a floating result chip appears above the cursor as you type. Same engine as the "=" key and Siri, with zero extra taps.

KEYBOARDS FOR YOUR ACTUAL WORK
Swap in a specialty key layout for what you're doing — six packs included:

  • Finance — currency symbols for fast price entry
  • Symbols & Science — π, √, ^, ° and math notation
  • Programmer — hex prefixes and bitwise operators
  • Date & Time — today's date or the current time in one tap
  • Units & Conversion — length, mass, temperature with a live offline converter
  • Cooking & Baking — fraction keys (½ ⅓ ¼) plus cups-to-millilitres converter

PRO SHORTCUTS
Long-press "%" for a two-step tax + tip calculator. Long-press "." for reusable text snippets. Long-press "0" for clipboard history. Long-press "=" for the unit and recipe converter. Every calculation lands on a running result tape you can revisit anytime.

BUILT FOR THE LATEST iOS
NumPad speaks Siri: "Calculate with NumPad," "Convert units with NumPad," and "Calculate a tip with NumPad" work the moment the app is installed — no setup. Every pack runs fully offline. On the latest iOS, the optional Glass theme uses real Liquid Glass, matched for light and dark mode.

YOUR LAYOUT, YOUR CALL
A custom keyboard with the layout you choose — full keypads, compact rows, your arrangement. If you enter numbers anywhere — payments, spreadsheets, expenses, code, recipes — NumPad pays for itself the first day.

What’s new

Release notes for the latest version, as written by the developer.

v2.1.1
Original · root

Bug Fixes

  • Maintenance update

Rank history

Daily position in the Afghanistan charts. #1 is at the top.

Best rank
#1
Current rank
#1
Days charting
7 of 7

On the charts today

Small & simple score

How realistic it is for a small team to build something like this.

100/100

Small & simple

  • Developer size100% · 25

    Developer: 1 app on the charts

  • Audience size100% · 20

    Ratings: 232

  • App size100% · 10

    Size: 8 MB

  • Price model100% · 15

    Price model: paid

  • Demand proof100% · 30

    Best rank #1, 18 countries

An indicator, not a fact. We can't see team size. Calculated Oct 24, 2026 · method i2

How the score works

Version history

  • 2.1.1LatestReleased Oct 1, 2026