Bank Of America vs. Zynlo Bank
High-Yield Savings Account Comparison
By Aviel Fahl|Last Updated: October 21, 2025
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Summary of Bank of America vs. Zynlo Bank
Key Metrics at a Glance
| Feature | Bank of America | Zynlo Bank |
|---|---|---|
| Top Savings APY | 0.01% Advantage Savings | 4.20% Tomorrow Savings Account |
| Minimum to Open | $100 | $10 |
| Minimum Balance for Top APY | $0.01 | |
| Note | APY may vary by market. The monthly fee may be waived under some circumstances, such as if you maintain a minimum balance of $500, or are below the age of 25, etc. |
Bank of America
Strengths
- Bank of America has a higher App Store rating of 4.8.
- Bank of America offers a savings account with a low minimum deposit of $100.
Potential Drawbacks
- Bank of America's current APY is only 0.01%, unchanged from 30 days ago.
- Bank of America charges an $8 monthly maintenance fee unless conditions are met.
Zynlo Bank
Strengths
- Zynlo Bank offers a competitive APY of 4.20%, although it decreased from 4.35% last month.
- Zynlo Bank has no monthly maintenance fees.
Potential Drawbacks
- Zynlo Bank has a lower App Store rating of 4.0 and Google Play rating of 3.5.
- Zynlo Bank requires a minimum deposit of $10 for the Tomorrow Savings Account.
→ As of October 21, 2025 Bank of America offers an APY of 0.01% for its Advantage Savings account, with a minimum balance of , compared to Zynlo Bank's 4.20% APY for its Tomorrow Savings Account, with a minimum balance of $0.01.
→ Zynlo Bank yields $419 more than Bank of America on a $10,000 balance after one year. Bank of America pays $1, while Zynlo Bank pays $420 - an APY advantage for Zynlo Bank.
Calculate Savings Growth for Bank of America vs Zynlo Bank
Bank of America - Advantage Savings
Total savings breakdown:
- Interest earned: $5.7 (0.03%)
- Total contributions: $13,000 (72.20%)
- Initial deposit: $5,000 (27.77%)
Your total balance
$18,005.70
Total balance: $18,005.7
Earnings: $5.7
Bank OverviewZynlo Bank - Tomorrow Savings Account
Total savings breakdown:
- Interest earned: $2,564.3 (12.47%)
- Total contributions: $13,000 (63.22%)
- Initial deposit: $5,000 (24.31%)
Your total balance
$20,564.30
Total balance: $20,564.3
Earnings: $2,564.3
Bank OverviewWith a $5,000 initial deposit and $13,000 in total contributions over 5 years, Bank of America's total earnings would be $2,558.6 lower than Zynlo Bank's total earnings.
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
Compare Bank of America's vs Zynlo Bank's Savings Accounts
| Bank of America | Zynlo Bank | ||
|---|---|---|---|
| Product | Advantage Savings | vs | Tomorrow Savings Account |
| APY | 0.01% (as of 10/21/2025) | 4.20% (as of 10/21/2025) | |
| Bundled Account | No | No | |
| FDIC-insured | Yes | Yes | |
| Online Only | No | Yes | |
| Compound Frequency | Monthly | Daily | |
| Minimum Deposit | $100 | $10 | |
| Minimum Balance for APY | N/A | $0.01 | |
| Maintenance Fee | $8 | $0 | |
| Direct Deposit Required | No | No | |
| Note | APY may vary by market. The monthly fee may be waived under some circumstances, such as if you maintain a minimum balance of $500, or are below the age of 25, etc. | ||
| App Store Rating | 4.8/5 | 4.0/5 | |
| Google Play Rating | 4.6/5 | 3.5/5 | |
| BBB Rating | A+ | A+ |
Comparative Historical APY Insights (Last 7 Months)
| Bank of America | Zynlo Bank | ||
|---|---|---|---|
| Product | Advantage Savings | vs | Tomorrow Savings Account |
| Latest APY | 0.01 % | 4.20 % | |
| Trend | Sideways | Sideways | |
| Slope (bps/mo) | 0.0 | -0.7 | |
| Rate Changes / Mo | 0.00 | 0.14 | |
| Days Since Last Change | 218 | 12 | |
| High (-7 m) | 0.01 % | 4.35 % | |
| Low (-7 m) | 0.01 % | 4.20 % | |
| Draw-down from High | 0.0 % | -3.4 % | |
| Volatility (CV) | 0.000 | 0.008 |
APY Insights Glossary
- Latest APY
- Most recent advertised annual-percentage yield.
- Trend
- Direction over the last 7 months (regression slope).
- Slope (bps/mo)
- Average monthly change; 10 bps = 0.10 pp.
- Rate Changes / Mo
- Typical number of APY moves per month.
- Days Since Last Change
- Recency of the latest APY adjustment.
- High (-7 m)
- Highest APY in the last 219 days.
- Low (-7 m)
- Lowest APY in the last 219 days.
- Draw-down from High
- How far today sits below the 7-month peak.
- Volatility (CV)
- Coefficient of variation = stdev ÷ mean.
Why Track Savings-Account APYs?
- See how quickly a bank reacts to Fed moves or competition.
- Gauge “twitchiness” - frequent moves can annoy savers.
- Spot if you're buying near a peak (draw-down) or riding a rise.
- Slope (bps/mo) shows speed of change.
- Volatility (CV) scales jumps by average level.