Aion Bank
Bank
SimpleFIN apps
Bank data protocol
Connect Aion Bank to SimpleFIN apps
Sync your bank transactions and balances to Actual Budget, Firefly III, Sure, Buckets, and any other app powered by SimpleFIN.
Features
Everything, end to end.
From
Aion Bank
- Sync scheduleEvery 30 to 360 min
- Pending transactionsMay be unavailable
- Credit card accountsSupported
- History on first syncUp to 730 days
- Bank login renewalEvery 180 days
To
SimpleFIN apps
- Works with any SimpleFIN-compatible budgeting or finance app, including Actual Budget, Firefly III, Sure, and Buckets
- Set up in minutes with a one-time setup token, no scripts or browser extensions needed
- Apps get a secure, read-only connection limited to the accounts you choose to share
- Re-syncing never creates duplicate transactions
- Customize payees and descriptions with bank account rules
Setup
How do you connect Aion Bank to SimpleFIN apps?
Synci syncs new booked transactions and balances automatically, and your first sync imports up to 730 days of history.
Connect securely
Log in through Aion Bank's own PSD2 flow. Synci never sees or stores your credentials.
Pick accounts
Choose which Aion Bank accounts you want to sync.
Link to SimpleFIN apps
Copy your Synci setup token and paste it into your app's SimpleFIN settings, then link the shared accounts.
Sync automatically
Transactions and balances flow from Aion Bank to SimpleFIN apps from that point on.
Pricing
Pay per connection.
Pick the plan that matches how often you want fresh data and how far back you need to look. All plans include a 14-day free trial.
Basic
Our entry pay-per-connection plan. Perfect for people with simple needs.
connections
€2.00/month
€23.99 billed yearly
14 days free, cancel anytime.
Includes:
- Unlimited accounts
- Unlimited destinations
- 2 rules per connection
- Bank sync every 6 hours
- 60-day data retention
- Not included:Priority support
AI assistants:
- 60 days of history for your AI assistant
- Not included:Merchant identification
- Not included:Transaction categorization
Pro
Depth for your AI assistants and budgeting tools: enrichment, up to two years of history & fast sync.
connections
€4.33/month
€51.99 billed yearly
14 days free, cancel anytime.
Includes:
- Unlimited accounts
- Unlimited destinations
- Unlimited rules
- High-frequency bank sync (every 30 min)
- 730-day data retention
- Priority support
AI assistants:
- Up to 2 years of history for your AI assistant
- Merchant identification
- Transaction categorization
Business
Unlimited pay-as-you-go plan tailored to developers and businesses.
connections
Usage-based pricing
Includes:
- Unlimited accounts
- Unlimited destinations
- Unlimited rules
- High-frequency bank sync (every 30 min)
- 730-day data retention
- Priority support
AI assistants:
- Up to 2 years of history for your AI assistant
- Merchant identification
- Transaction categorization
FAQ
Common questions
Synci polls Aion Bank for new data every 30 to 360 minutes, depending on your plan. Some banks may not support high-frequency sync (30 min). When new transactions or balance changes are found, they are transferred to SimpleFIN apps within seconds.
Aion Bank may not expose pending transactions through PSD2. Booked transactions are always supported, and are typically available within a day of being processed by the bank.
When you first connect Aion Bank, Synci can import up to 730 days of transaction history into SimpleFIN apps. From that point on, new transactions and balance changes are synced continuously.
Yes — Aion Bank credit card accounts can be connected and synced to SimpleFIN apps alongside your regular accounts.
No. Synci connects to Aion Bank through regulated PSD2 APIs, which means authentication happens on Aion Bank's own login flow. Your bank login credentials are never shared with or stored by Synci.
Synci currently connects to Aion Bank through GoCardless, a regulated PSD2 data provider. Providers handle the technical connection to the bank — your login credentials stay between you and Aion Bank.