NumPad: Calculator Keyboard
by More Voltage
- Productivity
- Paid
- Small & simple · 100
- 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 methodScreenshots
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.
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 worksVersion history
- 2.1.1LatestReleased Oct 1, 2026