High-Yield Savings Account Comparison

Ally Bank vs. Discover Bank

Compare rates, requirements, and features side-by-side to find the best option for you.

Analysis by Aviel Fahl
Updated December 6, 2025
Advertising Disclosure: We may earn a commission from partner links.

Ally Bank

Savings Account

3.30%
APY
Dec 6, 2025
FDIC InsuredNo MinimumsGreat iOS AppGreat Android App
Show Fine Print & Trends

Discover Bank

Online Savings Account

3.40%
APY
Dec 6, 2025
FDIC InsuredNo MinimumsGreat iOS AppGreat Android App
Show Fine Print & Trends

Market Reality Check

Both of these banks offer rates below the current top tier. The best rates we track are currently above 4.25% APY.

See Top Rates

Comparison Analysis

Comparing Ally Bank vs. Discover Bank

Updated: Dec 6, 2025

Why Ally Bank?

No distinct advantages found vs Discover Bank.

Why Discover Bank?

  • Higher rated Android app (4.8 vs 4.4)

— Key Feature Differences —

Better Returns at $10,000
Discover Bank

Discover Bank's Online Savings Account earns more on smaller deposits (approx. $340 vs $330/yr).

Best Mobile App Experience
Discover Bank

Discover Bank offers an iOS app rated 4.9 (vs. 4.7) and Android app rated 4.8 (vs. 4.4)

Shared Benefits

Both offer monthly maintenance-free account options Both banks have options with $0 opening deposit Available Nationwide Available to New & Existing Customers
The Bottom Line

Over a 1-year period, Discover Bank's Online Savings Account pays $10 more interest on a $10,000 balance than Ally Bank's Savings Account.

Ally BankDiscover Bank
Automated Data Audit

Executive Summary

Discover Bank's Online Savings Account offers a higher APY of 3.40% compared to Ally Bank's Savings Account, which has an APY of 3.30%. Both accounts require no minimum deposit or balance and have no maintenance fees, making them accessible options for savers. Additionally, Discover Bank's account is noted for providing better returns on smaller deposits and boasts a superior mobile app experience. Both accounts are online-only and do not require direct deposit, providing flexibility for account management.

Analysis generated based on current Banksparency database records

* AI-generated content provided for informational purposes only. Accuracy is not guaranteed; always verify details with the provider.

Stop Losing Interest

See who beats both Ally Bank and Discover Bank.

Compare All High-Yield Savings Accounts
Pibank
Pibank Savings
FDIC InsuredNo Minimums
4.60% APY
+1.20% vs Discover Bank
Better Rate
Neighbors Bank
Neighbors Savings Account
FDIC InsuredNo MinimumsGreat Android App
4.50% APY
+1.10% vs Discover Bank
Better Rate
Axos Bank
Axos ONE
FDIC InsuredNo MinimumsGreat iOS AppGreat Android App
4.31% APY
+0.91% vs Discover Bank
Better Rate
FeatureAlly BankDiscover Bank
APY
3.30%
Verified: 12/6/2025
↘︎ 0.20%90d Change
3.40%
Verified: 12/6/2025
↘︎ 0.10%90d Change
Product NameSavings AccountOnline Savings Account
Minimum Deposit$0$0
Min. Balance for APY$0$0
Monthly Fee$0$0
Branch AccessNoneNone
Account Type
Online Only
Online Only
Direct Deposit Req.NoneNone
Checking BundleNoNo
Mobile Apps
iOS4.7
Android4.4
iOS4.9
Android4.8
BBB RatingA+A+
Next Steps

Savings Comparison

Calculations based on current APY.
$
$

Discover Bank earns $63.4 more than Ally Bank.

Ally Bank

Savings Account

3.30% APY

Savings Breakdown

  • Interest Earned
    +$1,987.10(9.9%)
  • Total Contributions
    $13,000
  • Initial Deposit
    $5,000

Projected Balance

$19,987.10

Effective APY
3.30%

Discover Bank

Online Savings Account

3.40% APY

Savings Breakdown

  • Interest Earned
    +$2,050.50(10.2%)
  • Total Contributions
    $13,000
  • Initial Deposit
    $5,000

Projected Balance

$20,050.50

Effective APY
3.40%

The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.

📈 Compare Savings Rates Over Time

Historical Performance

Last 10 Months Analysis
MetricAlly BankDiscover Bank
Savings AccountOnline Savings Account
Current APY
3.30%3.40%
Trend
Stable Stable
Velocity (bps/mo)
-4.3-3.8
Days Since Change
3667
10-Month High
3.80%3.75%
10-Month Low
3.30%3.40%
Adjustments / Mo
0.480.38
Volatility Score
0.0390.034
How to read these metrics(Click to expand)

Trends & Velocity

  • Trend: The general direction of the rate over the analyzed period. Useful for spotting if a bank is currently aggressive or pulling back.
  • Velocity (bps/mo): Speed of change. A high positive number means they raise rates quickly. 10 bps = 0.10%.
  • Adjustments/Mo: "Twitchiness." High frequency means the rate changes constantly; low frequency means it's stable.

Risk & Range

  • High/Low: The absolute ceiling and floor of the rate during the 312-day window.
  • Volatility Score: Lower is better for predictability. It indicates how wildly the rate swings relative to its average.
  • Days Since Change: If this number is high (e.g., >90), the rate is very sticky. If low, it changed recently.

More Comparisons

Compare Ally Bank's APY of 3.30% with other banks
Compare Discover Bank's APY of 3.40% with other banks
Bank PairCompetitor APYMin Deposit
Discover Bank vs American Express3.40%$0
Discover Bank vs Axos Bank4.31%$0
Discover Bank vs Bank of America0.01%$100
Discover Bank vs Barclays4.00%$0
Discover Bank vs Bask Bank3.90%$0
Discover Bank vs BMO Alto3.25%$0
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Discover Bank vs Capital One3.40%$0
Discover Bank vs Chase Bank0.01%$0
Discover Bank vs Chime3.50%$0
Discover Bank vs CIT Bank3.75%$100
Discover Bank vs Citibank3.30%$0
Discover Bank vs Citizens Access™3.35%$0.01
Discover Bank vs Climate First Bank4.21%$50
Discover Bank vs Elevault4.08%$0
Discover Bank vs EverBank4.05%$0
Discover Bank vs Fitness Bank4.75%$100
Discover Bank vs FNBO Direct3.00%$1
Discover Bank vs Forbright Bank4.00%$0
Discover Bank vs FVCbank3.85%$500
Discover Bank vs GO2bank4.50%$0
Discover Bank vs Ivy Bank4.25%$2,500
Discover Bank vs LendingClub4.20%$0
Discover Bank vs Marcus by Goldman Sachs3.65%$0
Discover Bank vs Neighbors Bank4.50%$0
Discover Bank vs Newtek Bank4.35%$0.01
Discover Bank vs Openbank4.20%$500
Discover Bank vs Peak Bank4.20%$100
Discover Bank vs Pibank4.60%$0
Discover Bank vs PNC3.53%$0
Discover Bank vs Presidential Bank4.00%$5,000
Discover Bank vs Quontic Bank3.75%$100
Discover Bank vs Salem Five Direct3.71%$10
Discover Bank vs Santander Bank0.01%$25
Discover Bank vs SoFi Bank4.30%$0
Discover Bank vs Synchrony Bank3.65%$0
Discover Bank vs TIMBR4.40%$1,000
Discover Bank vs UFB Direct3.71%$5000
Discover Bank vs Valley Direct4.10%$1,000
Discover Bank vs Varo Bank5.00%$0
Discover Bank vs Vio Bank4.16%$100
Discover Bank vs Wealthfront4.15%$0
Discover Bank vs Wells Fargo0.05%$25
Discover Bank vs Zynlo Bank4.05%$10