Don't trust. Verify.
📊 Sources: Satoshi Nakamoto, Bitcoin White Paper (2009)
🖇️ ark-builders.dev/apps/rate/
🖇️ Download: iOS | Android
🖇️ Open source: github.com/ARK-Builders/ARK-Rate
Users don't need to trust ARK Builders won't track them. They can verify it's impossible to track, because there are no servers collecting data.
* No account creation. ✅
* Apple verified privacy. ✅
* Android verified privacy. ✅
* No login system. ✅
* No central servers. ✅
* Open source code available for verification ✅
ARK Builders approach:
* Open local-first application
* Calculation performed on device
* No data transmitted
* No trust required
This principle eliminating the need for trusted intermediaries can extend beyond cryptocurrency to everyday financial tools
"The root problem with conventional currency is all the trust that's required to make it work."
— Satoshi Nakamoto, Bitcoin White Paper (2009)
Download:
🔗 ark-builders.dev/apps/rate/
🔗 App Store: apps.apple.com/us/app/trave...
🔗 GitHub: github.com/ARK-Builders...
🔗 Google Play Store: play.google.com/store/apps/d...
#ARKRate #CurrencyConverter #macOS #iOS #OfflineFirst
Available across all major platforms:
• iOS App Store (runs natively on macOS too via App Store)
• Android (Google Play Store)
• Direct download (GitHub)
✓ Zero ads
✓ Your data never leaves your device (Apple-verified: "Data Not Collected")
✓ Only 27.7 MB
✓ Free and open source
Press Cmd+Space, open the app, convert instantly. The fast way.
What makes it different:
✓ 900+ currencies + major crypto (BTC, ETH, USDT, SOL, XRP, ADA, DOT)
✓ Works completely offline after initial rate updates
✓ No login or account required ... continue next thread
Most people convert currencies by opening a browser and typing conversions into a search engine. ARK Rate offers a more direct approach. For instance, on macOS using ARK Rate through Spotlight is faster than opening a browser and typing conversions.
ARK Rate is now available for iOS and macOS.
iOS users have been looking for a currency converter that works offline, requires no login, shows no ads, and keeps data private. ARK Rate delivers exactly that and our iOS app runs natively on your Mac, no separate download needed.
Today we're officially launching the iOS version of our currency converter Rate!
Please, find more details and feel free to support us on ProductHunt:
www.producthunt.com/products/ark...
Download or free app now, so it can save you time and money on your next layover 😉
📊 Sources:
Icogni Privacy Research: 60% apps share data - icogni.com/blog/are-bud...
Plaid Class Action: $58M settlement (2023) - www.classaction.org/news/plaid-t...
TD Bank Security Warning - www.td.com/ca/en/person...
Reddit Privacy Discussion: 200K+ views - medium.com/@moneytoolap...
The trade-off: Manual entry vs automated syncing.
The benefit: Complete financial privacy.
For people managing multi-currency income, crypto holdings, or international payments, this is consolidation without surveillance.
One app. Zero data sharing.
🔗 ark-builders.dev/apps/rate/
How it works:
1. Download app (no registration)
2. Enter holdings: $10K USD, €5K EUR, 1 BTC
3. See total value in BRL instantly
4. Set rate alerts for conversions
5. All data stored locally only
ARK Rate solves both problems:
Consolidation: 200+ fiat currencies + crypto in one app
Privacy: Local-first architecture, zero data sharing
No account. No login. No servers. No Plaid. No API keys.
Your data never leaves your phone.
The fragmentation problem:
• Currency conversion? Open app 1
• Crypto portfolio? Open app 2
• Net worth calculation? Open spreadsheet
• Rate checking? Open app 3
Constant switching = constant friction.
When a Moneydance user requested their data from Plaid, they were shocked: "Actual transaction dates, merchant names and amounts... The data will be sold to companies that target you for their marketing, but it can also be subpoenaed."
Plaid, the service that connects financial apps to your bank accounts, faced a $58 million class action settlement in 2023 for allegedly collecting bank credentials without proper consent.
Each app you use creates another data collection point. One app knows your crypto holdings. Another knows your spending patterns. A third knows your international transfers. Combined, they have your complete financial profile.
Research by Icogni: 60% of popular financial apps share data with third parties.
Managing multi-currency finances shouldn't require multiple apps.
Currency converter. Crypto tracker. Banking app. Portfolio manager. Spreadsheet.
But most people use 4-5 separate apps—each creating a data collection point.
Here's why this matters 🧵
💡 ARK Rate: Currency conversion that works when you need it most.
(Android + iOS)
What to do next:
Download ARK Rate at the airport before you fly.
Download: ark-builders.dev/apps/rate
Why is it free?
It’s open-source. No servers = no costs. Your data stays on your phone = nothing to sell. Just a high level developers fixing a problem
Secret bonus feature:
Track your crypto portfolio privately. 🔐
Enter your crypto holdings manually.
See your total value in any currency.
All your data stays on your phone.
✓ No ads. Ever. 🚫
✓ No login needed. 💨
✓ 200+ currencies (including weird ones). 💱
✓ 100+ cryptocurrencies too. 💱
✓ Tiny app (15MB total). 🤏🏻
ARK Rate was built for that exact moment. ARK Rate is different. What makes it better:
