Comparison

Inflation Calculator vs DumbKeyboard

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

Head to head
About

Inflation Calculator

Easily determine the present-day value of past prices using up-to-date inflation data. This tool supports 22 international currencies and provides yearly updates, making it simple to understand historical cost comparisons.

Highlights
  • Calculate dollar value from 1800-2025
  • Supports 22 international currencies
  • Yearly inflation data updates
  • Apple Watch companion app
  • Simple and intuitive interface
Features
Read full description

NEW: TIME MACHINE AND ASK - Time Machine: pick any year and see what everyday things cost, with charts of prices over time. - Ask: ask anything about money and the past, answered with real inflation data. - Share any result or chart with a friend. Ever see a price from the past and wonder how much that would cost today? With Inflation Calculator, the answer is just a tap away. Features include: - Calculate the value of the dollar over time from 1800 to 2026. - Support for 22 international currencies: - US Dollar - Euro - British Pound - Canadian Dollar - Australian Dollar - New Zealand Dollar - Japanese Yen - Swiss Franc - Chinese Yuan - Swedish Krona - Mexican Peso - Norwegian Krone - South Korean Won - Turkish Lira - Brazilian Real - South African Rand - Indian Rupee - Russian Ruble - Israeli Sheqel - Indonesian Rupiah - Saudi Arabian Riyal - Colombian Peso - Yearly updates with the latest inflation data. - Simple and intuitive. No ads or distracting popups. PREMIUM Premium adds charts for every price and as many Ask questions as you like. Choose a yearly subscription (new subscribers get a 7-day free trial) or a one-time lifetime purchase. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the current period, and you can manage or cancel them anytime in your Apple Account settings. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://dyoburon.com/inflation-calc-privacy-policy

About

DumbKeyboard

Features
Read full description

Dumb Keyboard is a lightweight custom iOS keyboard focused on the basics: quick typing, clean layout, and no clutter. How to enable Open Settings > General > Keyboard > Keyboards Tap Add New Keyboard... Select Dumb Keyboard Tap Dumb Keyboard and enable Allow Full Access (required for haptics) Dumb Keyboard is built for people who want a straightforward keyboard experience.

Screenshots

Inflation Calculator4 screens
DumbKeyboard1 screens

Verdict

The call

The clearest difference is in-app purchases: DumbKeyboard at none against Inflation Calculator's 4. DumbKeyboard also leads on update cadence (every 2 days vs every 3 months). Inflation Calculator's advantage is iOS requirement (16.0 vs 26.2). On price, ads 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. Inflation Calculator sells 4 in-app purchases, starting at $7.49 per year. DumbKeyboard asks for nothing beyond the download.

UpkeepUpdate frequency

Inflation Calculator ships an update every 3 months, DumbKeyboard every 2 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Inflation Calculator versus DumbKeyboard: the parameters behind the verdict, then further details
ParameterInflation CalculatorDumbKeyboard
PriceFreeFree
Rating4.9 (3.6K ratings) — better—
Positive reviews85.1% of reviews—
Number of ratings3.6K — better—
Update frequencyEvery 3 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree—
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better26.2
Further details — not scored
Size4 MB1 MB
Age rating4+4+
DeveloperDylan BurtonCassandra Sandquist

Bugs and requests

Inflation Calculator

Reported bugs

2 issues
  • Not updated beyond 2024
  • Caps out at 2020 for some countries

Requested features

4 requests
  • Update to 2025
  • Add support for more currencies
  • Improve design and usability
  • Allow direct data input

DumbKeyboard

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Inflation Calculator

Subscriptions2
  • Premium (yearly)$7.491 Year
  • Premium (yearly)7 Days trial$14.991 Year
One-time2
  • Premium (lifetime)$14.99
  • Premium (lifetime)$29.99
None

DumbKeyboard

No in-app purchases

Questions

Is Inflation Calculator free?
Inflation Calculator is free to download, with in-app purchases available.
Is DumbKeyboard free?
DumbKeyboard is free to download, with no in-app purchases.
Do Inflation Calculator or DumbKeyboard have ads?
Neither Inflation Calculator nor DumbKeyboard shows ads.
Which is updated more often, Inflation Calculator or DumbKeyboard?
Inflation Calculator ships an update every 3 months, and DumbKeyboard every 2 days. Most recently, Inflation Calculator was updated on November 6, 2026 and DumbKeyboard on November 5, 2026.

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