ARK Builders
@ark-builders.dev
ARK Builders crafts contemporary software for all platforms, with the mission to elevate daily user experiences through privacy enhancements and seamless cross-device synchronization.
https://www.ark-builders.dev
https://www.ark-builders.dev
💡 ARK Rate: Currency conversion that works when you need it most.
(Android + iOS)
(Android + iOS)
January 9, 2026 at 12:00 AM
💡 ARK Rate: Currency conversion that works when you need it most.
(Android + iOS)
(Android + iOS)
What to do next:
Download ARK Rate at the airport before you fly.
Download: ark-builders.dev/apps/rate
Download ARK Rate at the airport before you fly.
Download: ark-builders.dev/apps/rate
January 9, 2026 at 12:00 AM
What to do next:
Download ARK Rate at the airport before you fly.
Download: ark-builders.dev/apps/rate
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
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
January 9, 2026 at 12:00 AM
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
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.
Track your crypto portfolio privately. 🔐
Enter your crypto holdings manually.
See your total value in any currency.
All your data stays on your phone.
January 9, 2026 at 12:00 AM
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.
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). 🤏🏻
✓ No login needed. 💨
✓ 200+ currencies (including weird ones). 💱
✓ 100+ cryptocurrencies too. 💱
✓ Tiny app (15MB total). 🤏🏻
January 9, 2026 at 12:00 AM
✓ No ads. Ever. 🚫
✓ No login needed. 💨
✓ 200+ currencies (including weird ones). 💱
✓ 100+ cryptocurrencies too. 💱
✓ Tiny app (15MB total). 🤏🏻
✓ 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:
January 9, 2026 at 12:00 AM
ARK Rate was built for that exact moment. ARK Rate is different. What makes it better:
Every currency converter app on your phone:
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
January 9, 2026 at 12:00 AM
Every currency converter app on your phone:
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
You grab your phone Open your currency app. And see: “No internet connection.”
That panic? Everyone feels it.
That panic? Everyone feels it.
January 9, 2026 at 12:00 AM
You grab your phone Open your currency app. And see: “No internet connection.”
That panic? Everyone feels it.
That panic? Everyone feels it.
You land in Tokyo. You’re exhausted. The taxi driver says “¥3,500.”
Wait… is that $30 or $300?
No SIM card yet. No WiFi.
Wait… is that $30 or $300?
No SIM card yet. No WiFi.
January 9, 2026 at 12:00 AM
You land in Tokyo. You’re exhausted. The taxi driver says “¥3,500.”
Wait… is that $30 or $300?
No SIM card yet. No WiFi.
Wait… is that $30 or $300?
No SIM card yet. No WiFi.
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.
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.
January 8, 2026 at 12:00 AM
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.
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.
Track your crypto portfolio privately. 🔐
Enter your crypto holdings manually.
See your total value in any currency.
All your data stays on your phone.
January 8, 2026 at 12:00 AM
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.
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). 🤏🏻
✓ No login needed. 💨
✓ 200+ currencies (including weird ones). 💱
✓ 100+ cryptocurrencies too. 💱
✓ Tiny app (15MB total). 🤏🏻
January 8, 2026 at 12:00 AM
✓ No ads. Ever. 🚫
✓ No login needed. 💨
✓ 200+ currencies (including weird ones). 💱
✓ 100+ cryptocurrencies too. 💱
✓ Tiny app (15MB total). 🤏🏻
✓ 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:
January 8, 2026 at 12:00 AM
ARK Rate was built for that exact moment. ARK Rate is different. What makes it better:
Every currency converter app on your phone:
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
January 8, 2026 at 12:00 AM
Every currency converter app on your phone:
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
🚫 They need internet
🚫 They show ads
🚫 They want you to login
🚫 They don’t have the currency you need.
These apps work great at home on your couch. But in the moment you actually need them? Useless.
Except one.
No SIM card yet. No WiFi.
You grab your phone Open your currency app. And see: “No internet connection.”
That panic? Everyone feels it.
You grab your phone Open your currency app. And see: “No internet connection.”
That panic? Everyone feels it.
January 8, 2026 at 12:00 AM
No SIM card yet. No WiFi.
You grab your phone Open your currency app. And see: “No internet connection.”
That panic? Everyone feels it.
You grab your phone Open your currency app. And see: “No internet connection.”
That panic? Everyone feels it.
You land in Tokyo. You’re exhausted. The taxi driver says “¥3,500.”
Wait… is that $30 or $300?
Wait… is that $30 or $300?
January 8, 2026 at 12:00 AM
You land in Tokyo. You’re exhausted. The taxi driver says “¥3,500.”
Wait… is that $30 or $300?
Wait… is that $30 or $300?
Cloud apps: You rent access. They own the data.
Local-first apps: You own the data. It lives on your device.
If ARK Builders shuts down tomorrow?
Your apps keep working.
Your data stays yours.
That's ownership.
Stop renting. Start owning.
ark-builders.dev
Local-first apps: You own the data. It lives on your device.
If ARK Builders shuts down tomorrow?
Your apps keep working.
Your data stays yours.
That's ownership.
Stop renting. Start owning.
ark-builders.dev
December 28, 2025 at 12:30 AM
Cloud apps: You rent access. They own the data.
Local-first apps: You own the data. It lives on your device.
If ARK Builders shuts down tomorrow?
Your apps keep working.
Your data stays yours.
That's ownership.
Stop renting. Start owning.
ark-builders.dev
Local-first apps: You own the data. It lives on your device.
If ARK Builders shuts down tomorrow?
Your apps keep working.
Your data stays yours.
That's ownership.
Stop renting. Start owning.
ark-builders.dev
Local-first software = your data lives on YOUR device.
ARK Rate: Currency converter, works offline, syncs YOUR devices
ARK Memo: Notes (text/voice/drawings), encrypted locally
ARK Drop: File sharing, device-to-device
No servers. No landlord.
ARK Rate: Currency converter, works offline, syncs YOUR devices
ARK Memo: Notes (text/voice/drawings), encrypted locally
ARK Drop: File sharing, device-to-device
No servers. No landlord.
December 28, 2025 at 12:30 AM
Local-first software = your data lives on YOUR device.
ARK Rate: Currency converter, works offline, syncs YOUR devices
ARK Memo: Notes (text/voice/drawings), encrypted locally
ARK Drop: File sharing, device-to-device
No servers. No landlord.
ARK Rate: Currency converter, works offline, syncs YOUR devices
ARK Memo: Notes (text/voice/drawings), encrypted locally
ARK Drop: File sharing, device-to-device
No servers. No landlord.
2017: Parse (backend service) acquired by Facebook.
Then shut down.
Apps depending on it? Dead.
2023: Notion raises prices 300%.
You built your entire business there? Tough.
Cloud apps hold you hostage.
www.failory.com/cemetery/parse
medium.com/fifth-tribe-...
Then shut down.
Apps depending on it? Dead.
2023: Notion raises prices 300%.
You built your entire business there? Tough.
Cloud apps hold you hostage.
www.failory.com/cemetery/parse
medium.com/fifth-tribe-...
December 28, 2025 at 12:30 AM
2017: Parse (backend service) acquired by Facebook.
Then shut down.
Apps depending on it? Dead.
2023: Notion raises prices 300%.
You built your entire business there? Tough.
Cloud apps hold you hostage.
www.failory.com/cemetery/parse
medium.com/fifth-tribe-...
Then shut down.
Apps depending on it? Dead.
2023: Notion raises prices 300%.
You built your entire business there? Tough.
Cloud apps hold you hostage.
www.failory.com/cemetery/parse
medium.com/fifth-tribe-...
2017:
Google Docs locked thousands of users out of their documents.
Automated system flagged them as "abusive."
No warning. No appeal. Just... locked out.
Your work. Their servers. Their rules.
www.wired.com/story/google...
www.theguardian.com/technology/2...
Google Docs locked thousands of users out of their documents.
Automated system flagged them as "abusive."
No warning. No appeal. Just... locked out.
Your work. Their servers. Their rules.
www.wired.com/story/google...
www.theguardian.com/technology/2...
December 28, 2025 at 12:30 AM
2017:
Google Docs locked thousands of users out of their documents.
Automated system flagged them as "abusive."
No warning. No appeal. Just... locked out.
Your work. Their servers. Their rules.
www.wired.com/story/google...
www.theguardian.com/technology/2...
Google Docs locked thousands of users out of their documents.
Automated system flagged them as "abusive."
No warning. No appeal. Just... locked out.
Your work. Their servers. Their rules.
www.wired.com/story/google...
www.theguardian.com/technology/2...
🔗 ark-builders.dev
⭐ github.com/ARK-Builders
Building software where network security isn't an afterthought—it's the foundation
December 24, 2025 at 3:00 AM
🔗 ark-builders.dev
⭐ github.com/ARK-Builders
Building software where network security isn't an afterthought—it's the foundation