# Convertium: Currency & Units — Money, Rates & Unit Convertor > Currency and physical unit converter with offline access and favorites. (iPhone/iPad app by InVooDoo LLC.) - Source: https://appshunter.io/ios/app/convertium-currency-and-units/id1666654129 (this page in markdown: same URL + `.md`) - Developer: [InVooDoo LLC](https://appshunter.io/developer/1173246186) - Category: Travel, Utilities - Price: Free with in-app purchases - Rating: 4.50/5 from 917 App Store ratings · 13 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 26 MB - Languages: American English - Released: 2023-02-24 - Data updated: 2026-08-31 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/convertium-currency-and-units/id1666654129/reviews.md ## What is Convertium? More than 160 different currencies and 350 different physical units can be quickly and easily converted using Convertium. Convertium is great for frequent users because it allows them to save their favorite conversion units for quick access in the future. Save time and energy without sacrificing quality. Even if you don't have access to the internet, you can still get the most up-to-date exchange rates every half-hour. If an update is successful, Convertium will store the new information so you can use it in offline calculations. FEATURES: * In-the-moment calculations * Support for more than 350 different units of measurement and 160 different currencies * A "favorite" list of conversion types * Real-time updates to currency exchange rates * Currency tied to a specific region SUPPORTS: * Measurements of volume, area, velocity, temperature, weight, energy, currency, pressure, time, length, power, information, density, frequency, Illuminance, acceleration, plain angle, network velocity, fuel consumption, electrical current, radioactivity, and cooking are all measured and converted to the metric or imperial systems. AVAILABLE WITH SUBSCRIPTION: * No Commercial Interruptions * Any Number of Favorites  * All-Time Unlimited History of Conversions * Chart of Currency Exchange Rates  * All-Time Unlimited Comparison * More Vivid Themes * More Options in Settings * iCloud Sync on All Your Devices * Conversion Equation * Custom Conversion Rate * Supplemental Input Keyboard Convertium, along with many other excellent apps, is now available as part of the InVooDoo One family of services, which allows you to upgrade your entire family's mobile experience with a single, affordable subscription. Join InVooDoo One and spend less on app subscriptions. ––––––––––––––––––––––––––– Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user’s Account Settings after purchase. Any unused portion of a free trial period will be forfeited when the user purchases a subscription. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Privacy Policy http://www.invoodoo.com/privacy-policy Terms of Use http://www.invoodoo.com/terms-of-use ## Key features - 160+ currencies - 350+ physical units - Save favorite conversions - Offline exchange rates - Real-time currency updates - Metric and imperial support ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Almighty Version | $29.99 | per year | | Almighty Version | $3.99 | per month | | InVooDoo One | $5.99 | per month | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Lifetime Almighty Version | $199.99 | one-time | ## What do users think of Convertium? Overall sentiment: positive **Pros** - 🚀 Just in time utility - 👍 Easy to use - 👍 Offline conversion - 👍 Custom rate saving - 👍 Simple and easy to use **Cons** - 🐛 Displayed exchange rate not current - 🔒 No way to pay - 🔒 Difficult to change anything **Commonly reported bugs** - Serving up ads - Leftover inactive UI **Most requested features** - Yearly subscription option - Separate app purchase option ## Recent user reviews (10 of 13) All indexed reviews: https://appshunter.io/ios/app/convertium-currency-and-units/id1666654129/reviews.md ### 5/5 — Just in time utility *2024-12-09* When a currency conversion is what you need, Convertium has your solution ### 5/5 — Money *2024-02-08* Money ### 5/5 — Easy to use *2024-02-01* Easy to use ### 4/5 — I only downloaded because the dev snaps on complainers *2023-11-16* Seems like an ok app to me to me though. Hilarious! 😂 **Developer response:** Thanks for funny comment. As you can see a lot of people like it or even love it. But who likes it last time son’t write review. And somebody who didn’t spend a penny so entitled to write his opinion. Tolerance is good, when it makes sense. Too much of tolerance is really bad. If there is really a problem contact us, help improve, we’re open. But giving 1 star for spending 30 seconds in app. Why?! ### 1/5 — Just add *2023-10-28* This app’s main purpose appears to be serving up ads. I found it to be nearly useless **Developer response:** This app is free to use with having ads in the app, to remove there is an option to upgrade and get 8 more apps in the same price and help keep us building apps. Everybody want's everything for free, but don't think how developer who does it should live on free stuff. Store doesn't give anything for free even with by watching ads. Can't imagine how to live then if nobody pays you or watch ads. But looks like it is hard to make somebody happy without giving everything for free. Nowadays is how it is... ### 1/5 — Menu change *2023-10-07* Very difficult to change anything **Developer response:** One tap to search from main screen and one tap to get values from favorites sounds difficult. Either it was different app, or … ### 1/5 — No way to pay *2023-09-07* I just want to remove the ads. There’s an “Almighty” version that you can’t actually buy. The only accessible IAP is a $6/month subscription for a nine-app suite. Take a hike. Let me just subscribe, even yearly, to just this one app, as the App Store listing indicates. Without that, I’m taking my biz elsewhere. EDIT: Wow, what a rude response from the developer. Note that the App Store does indicate that there used to be an “Almighty” version, which in the leftover inactive UI in the app seemed to indicate it’s exactly what I want, and I’m happy to pay yearly for it - again, as the actual IAP listing shows used to exist. But the only way to pay in the current version is for a suite of all the apps, and only by month. No currency converter is worth $6/ month when I don’t have any use for the rest of the suite - that’s a ridiculous price. To be clear: your own app, and the App Store listing for the app, indicates there is IAP for me to pay yearly for this one app. You updated your app to remove this, selling only the monthly suite subscription, but left the UI and IAP listing for the now nonexistent version in place. You should probably get your act together. More than happy to take my money elsewhere. **Developer response:** Google about InApps and how AppStore works on side of the developer. And then learn about being obligate to provide you anything. We're not in a slave state to make what only you want. Grown ups don't like, they go further, others whine and blame others in your own problems and not being on time to buy when the proposition was available. It might be very miserable life to live like that. My condolences to you. Most funny part you never intended to buy, as if you would, you would already did that. Good luck! ### 5/5 — Sup bruh! *2023-09-06* Btuhhhhhj ### 3/5 — Exchange rate *2023-06-04* Displayed exchange rate is not current, it’s close but certainly of by 3-4 dollars. **Developer response:** Hi, Can you contact us at support@invoodoo.com as we update our currencies every 20 minutes. Would be great to see your problem. What currencies you've used to test? Thank you. ### 5/5 — Solod app! *2023-03-26* I love that I can do conversions offline. Another thing is that the custom rate is available to save if needed. A solid app for sure. ## Frequently asked questions about Convertium ### What does Convertium do? Convertium is a utility app designed for quick and easy conversion between a vast array of currencies and physical units. It supports over 160 currencies and 350 different physical units, making it a comprehensive tool for various conversion needs. ### What are the key features of Convertium? Key features include in-the-moment calculations, support for over 350 units and 160 currencies, a favorites list for quick access to common conversions, and real-time currency exchange rate updates. It also offers offline access to the latest exchange rates. ### How much does Convertium cost? The app is available for free with in-app purchases. A subscription unlocks premium features such as no commercial interruptions, unlimited favorites and history, currency exchange rate charts, and iCloud sync across devices. ### Can I use Convertium offline? Yes, you can use Convertium offline. The app updates currency exchange rates every half-hour and stores the latest information locally, allowing you to perform offline calculations even without an internet connection. ### What types of units can Convertium convert? Convertium supports a wide range of measurements including volume, area, velocity, temperature, weight, energy, currency, pressure, time, length, power, information, density, frequency, and many more. It can convert these to both metric and imperial systems. ## Version history (last 5 releases) ### 1.0.19 — 2026-08-21 The converter now follows your finger when you drag it open or closed. Swiping the keyboard, chart, or comparisons no longer hides the sheet. Live currency values update in place as rates refresh. If you already have access, the app no longer flashes a lock screen on launch. ### 1.0.18 — 2026-08-18 Currency rates now refresh as soon as you open Convertium, and they update more often while you use the app, so the number on screen stays current. If you already bought Almighty — lifetime, a subscription, or InVooDoo One — Convertium recognizes it automatically after a reinstall. You should not need to tap Restore. ### 1.0.17 — 2025-12-19 • optimization and UI improvements ### 1.0.16 — 2024-10-02 We made updates to make it easier to discover our apps with the InVooDoo One package. ### 1.0.15 — 2024-10-01 We made updates to make it easier to discover our apps with the InVooDoo One package. ## Apps similar to Convertium | App | Rating | Price | Category | | --- | --- | --- | --- | | [Currency converter calculator!](https://appshunter.io/ios/app/currency-converter-calculator/id1457309557) | 4.7 (69,565) | Free | Travel | | [Currency Converter Calculator•](https://appshunter.io/ios/app/currency-converter-calculator/id6446201532) | 4.5 (8,001) | Free | Travel | | [Money converter - Currency](https://appshunter.io/ios/app/money-converter-currency/id380877896) | 4.6 (2,420) | Free | Travel | | [Currency converter: Exchange](https://appshunter.io/ios/app/currency-converter-exchange/id1022760167) | 4.8 (4,954) | Free | Travel | | [Currency Converter Plus Live](https://appshunter.io/ios/app/currency-converter-plus-live/id1317641473) | 4.8 (4,891) | Free | Travel | | [Currency](https://appshunter.io/ios/app/currency/id284220417) | 4.8 (78,224) | Free | Travel | ## More apps by InVooDoo LLC - [Мусаракш](https://appshunter.io/ios/app/id566957697) - [Calcularium](https://appshunter.io/ios/app/calcularium/id824113384) - [Play-ya](https://appshunter.io/ios/app/play-ya/id975441489) - [The Wallpapers Club](https://appshunter.io/ios/app/the-wallpapers-club/id1491614258) - [force4change – Tag Journaling](https://appshunter.io/ios/app/force4change-tag-journaling/id1499167510) - [Ewe: English Made Easy and Fun](https://appshunter.io/ios/app/ewe-english-made-easy-and-fun/id1521746194) All apps by InVooDoo LLC: https://appshunter.io/developer/1173246186 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-31.*