Koinka review
A focused iOS converter with live rates, tax tools, and Pro custom calculations.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Koinka is an iOS currency-converter app for travelers, international shoppers, business users, and anyone checking foreign-exchange values. It provides real-time rates for 80 currencies, an arithmetic conversion calculator, historical exchange-rate charts with trend statistics, and a tax-refund calculator. The app is ad-free and supports home-screen widgets, iCloud sync across devices, and Apple Watch currency conversion. Its focus suits Apple users who want travel calculations alongside everyday rate checks.
The freemium model includes a free plan and a 14-day free trial. Koinka Pro Monthly and Koinka Pro Yearly add unlimited custom items, formula support, a credit-card and tax-refund template marketplace, and link sharing. Koinka Pro Travel Pass provides Pro features for a single trip, while Koinka Pro Lifetime provides lifetime access. These paid options matter most for travelers or shoppers who need repeatable, specialized calculations rather than basic currency conversion.
Platform fit is the main constraint: Koinka runs on iOS devices, with Apple Watch support listed, so it is not suited to Android or desktop workflows. iCloud sync helps keep information aligned across supported Apple devices, and widgets provide quick access without opening the app. Email is the listed support channel. Choose Koinka if you travel with Apple hardware and value tax-refund tools, custom formulas, and shareable conversion items; choose another converter if cross-platform access or broader support options are priorities.
Koinka pros and cons
- Where it wins
- Real-time conversion across 80 currencies with arithmetic tools
- Tax-refund calculator, historical charts, and trend statistics
- Widgets, iCloud sync, Apple Watch support, and link sharing
- Where it doesn't
- Available only on iPhone, iPad, and Apple Watch platforms
- Custom formulas and unlimited items require a Pro plan
- Support is listed through email rather than broader channels
Koinka fact sheet, pricing and score →
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