Comparison

Unit Converter vs Keypop

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

Head to head
About

Unit Converter

Read full description

This is an efficient tool app that integrates a professional calculator with multi-unit conversion functionality. Supports complex expression calculations and multiple categories of physical unit conversions, meeting various calculation needs in study, work, and daily life. 【Core Feature Highlights】 Powerful Expression Calculation Engine οΏ­ Supports complex mathematical operations (e.g., 2.5 Γ— 3.8 + 1.2 Γ· 0.4) οΏ­ Scientific notation display οΏ­ Real-time calculation result preview οΏ­ Customizable decimal precision Comprehensive Unit Conversion Support οΏ­ Length, Mass, Time, Current, Temperature, Acceleration, Area, Charge, Force, Frequency, Plane Angle, Solid Angle, Speed, Volume User-Friendly Experience οΏ­ Save frequently used unit pairs for quick access οΏ­ Switch freely between dark and light themes οΏ­ Simple and intuitive interface Smart Conversion Experience οΏ­ One-tap unit swap function οΏ­ Copy calculation results and full formulas

About

Keypop

Features
Read full description

Keypop is a real keyboard with keycap themes you can type with anywhere β€” messages, notes, search bars. β€’ Make your own in a few steps β€” start from a concept (designed keycaps, designed keyboard or custom), then pick shape, color, outline, background and sound. β€’ Designed keycaps β€” one photo spread across every key, or clear keys over a photo background. β€’ Shapes β€” square, rounded, round, hearts, clouds and flowers. Set width and height freely. β€’ Outlines & depth β€” gold, rainbow, candy or double lines for keys and the board. β€’ Typing sounds & haptics β€” crisp clicks, deep thocks, bubbly pops. β€’ Market β€” browse keyboards others made, heart your favorites and apply them. β€’ Your languages β€” choose up to three of 29 languages and switch with one key. Hold a letter for accents. β€’ A little dino buddy that walks along as you type. β€’ Private by design β€” the keyboard never stores or sends what you type and has no ads or network code. No login. Keypop Plus (monthly, yearly or lifetime) gives you more keyboard slots, unlimited favorites and no ads. Subscriptions renew automatically unless cancelled at least 24 hours before the period ends; manage them in your account's subscription settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://loungees.net/keycapboard/privacy

Screenshots

Unit Converter4 screens
Keypop4 screens

Verdict

The call

The clearest difference is ads: Unit Converter at none against Keypop's shown. Unit Converter also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.4). Keypop's advantage is update cadence (daily vs every 2 weeks). On price and in-app purchases there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Unit Converter sells 1 one-off in-app purchase and Keypop sells 3 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Unit Converter ships an update every 2 weeks, Keypop daily. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

Scorecard4 real differences Β· 2 level
Unit Converter versus Keypop: the parameters behind the verdict, then further details
ParameterUnit ConverterKeypop
PriceFreeFree
Update frequencyEvery 2 weeksDaily β€” better
AdsNo β€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPod β€” betteriPhone
Requires iOS12.0 β€” better16.4
Further details β€” not scored
Size29 MB99 MB
Age rating4+4+
Developer伟鹏 李DAE HYUN KIM

In-app purchases

1 purchases

Unit Converter

One-time1
  • Unlock Premium Membership$0.99
3 purchases

Keypop

Subscriptions2
  • Keypop Plus Monthly$1.991 Month
  • Keypop Plus Yearly$11.991 Year
One-time1
  • Keypop Plus Lifetime$19.99

Questions

Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Is Keypop free?
Keypop is free to download, with in-app purchases available.
Do Unit Converter or Keypop have ads?
Keypop shows ads; Unit Converter does not.
Which is updated more often, Unit Converter or Keypop?
Unit Converter ships an update every 2 weeks, and Keypop daily. Most recently, Unit Converter was updated on November 9, 2026 and Keypop on November 6, 2026.

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