ÖTEK Currency Converter
Currency Converterfor Linux & Android
A single Flutter app built for both desktop and mobile - live exchange rates, a full ISO 4217 currency list, bi-directional conversion, and an hourly rate cache. One codebase, native on both platforms.
One app, two platforms,
zero compromises
Built with Flutter so the same interface, logic, and rate cache work identically whether you’re on your desktop or in your pocket.
Full ISO 4217 List
Every world currency including precious metals (XAU, XAG, XPD, XPT) and special drawing rights, sorted alphabetically by code.
Searchable Picker
A search sheet filters by code or name as you type - jump straight to TRY or QAR without scrolling.
Bi-directional Input
Type in either amount field and the other recalculates live. A single tap swaps the currency pair.
1-Hour Rate Cache
Rates are fetched once per pair and cached locally for an hour - fast, light on data, and works offline right after.
Light & Dark Themes
Follows your system theme automatically on both Linux and Android - no toggle needed.
Remembers Your Pair
The last currency pair you used is saved and restored automatically the next time you open the app.
Straightforward by design
Four interactions, that’s all. Open it, pick your currencies, type a number, done.
Pick your currencies
Tap either currency button to open the search sheet. Type a code or name, then tap to select.
Type an amount
Enter a number in either field - the other recalculates instantly using the live rate.
Swap if needed
Tap the swap button between the fields to flip the pair and recalculate in one motion.
Rates stay fresh
Each pair is cached for 1 hour. The status line under the amounts shows the live rate and cache status.
Pick your platform
Both builds come from the same Flutter codebase - install whichever fits your device, or both.
Linux
Primary · .debDownload the package
Grab the .deb file directly, or with wget in your terminal.
wget https://otek.today/files/otek-doviz-converter_1.0.14_amd64.deb
Install with apt
Installs the app and pulls in any missing dependencies automatically.
sudo apt install ./otek-doviz-converter_1.0.14_amd64.deb
Launch it
Find it in your application menu, or launch directly from the terminal.
otek-doviz-converter
Built for amd64 (x86_64) systems. Debian, Ubuntu, Mint, Pop!_OS, and derivatives are supported.
Android
Secondary · .apkDownload the APK
Tap the download button on this page from your Android device’s browser.
today.otek.doviz_converter-1.0.14.apk
Allow this source
Since it’s outside the Play Store, Android will ask permission to install from this source once.
Settings ▸ Apps ▸ Special access ▸ Install unknown apps ▸ allow your browser
Install & open
Tap the downloaded file to install, then open Currency Converter from your app drawer.
# tap the .apk in your notifications # or Downloads app to install
Not yet on Google Play - this direct APK is signed and safe, but Android will flag it as an unknown source until installed once.
Also available in your browser
Prefer converting currencies without leaving your tab? The Ötek Currency Converter extension brings live rates to your browser - same engine, no installation, no account.
Ready to use it?
Free download · No account · Works offline after first fetch
Yeniliğin Gücünü Ortaya Çıkarmak
Özelleştirilmiş Web Geliştirme
İşletmenizin benzersiz ihtiyaçlarına uygun web siteleri.
Kesintisiz Mobil Çözümler
Bağlantılı, mobil odaklı bir dünya için son teknoloji uygulamalar.
Kullanıcı Dostu UI/UX Tasarımı
Etkileşimli ve kullanıcı dostu dijital deneyimler oluşturma.
Kapsamlı Finansal Raporlama
Bilinçli kararlar için net içgörüler sunar.
Sorularınız Cevaplandı
Teknoloji ve finansın karmaşıklıklarını anlamanın zor olabileceğini biliyoruz. Bu nedenle, en sık sorulan soruları derleyerek size net ve anlaşılır cevaplar sunuyoruz. ÖTEK’in işletmenizi yenilikçi çözümler ve uzman rehberlikle nasıl destekleyebileceğini öğrenmek için SSS bölümümüzü keşfedin.
Danışmanlık Randevunuzu Ayarlayın
Bir sonraki adıma geçmeye hazır mısınız? Sorularınız, rehberlik ihtiyacınız veya yeni bir projeye başlama heyecanınız olsun, size yardımcı olmak için buradayız.
Bugün uzmanlarımızla bir randevu alın ve ÖTEK’in, işletmenizi desteklemek için nasıl özel çözümler ve yenilikçi stratejiler sunabileceğini keşfedelim.
