Betterment vs. Openbank
Betterment's Cash Reserve pays 4.00% APY while Openbank's High-Yield Savings Account pays 3.80% APY.
See how they compare on rate stability, mobile app ratings, and more below.
The Bottom Line
Who pays more interest on $10,000? Openbank pays $36 more than Betterment annually ($380 vs $344).
Choose Betterment if mobile app quality matters, or choose Openbank if getting the best rate matters most.
| Metric | BettermentCash Reserve Aug 21, 2026 | OpenbankHigh-Yield Savings Account Aug 19, 2026 |
|---|---|---|
| APY | 3.25% - 4.00% | 3.80% |
Est. Earnings | $5,000+$172 $10,000+$344 $25,000+$859 | $5,000+$190 $10,000+$380 $25,000+$950 |
Min Deposit | $0 | $500 |
Snapshot view. Rates subject to change. | ||
| Features | FDIC InsuredNo MinimumsGreat iOS AppGreat Android App | FDIC InsuredLow MinimumsStable Rate |
Prefer In-Person Banking?
Both of these institutions are online-only. If you need in-branch access, check out our list of savings accounts with brick-and-mortar locations.
Comparison Analysis
Comparing Betterment vs. Openbank
Executive Summary
A detailed summary for this comparison is being prepared. Check back soon.
The analysis is based on current Banksparency database records
* This content is provided for informational purposes only; always verify details with the provider.
Why Betterment?
- ✓Higher potential APY (4.00% vs 3.80%) for a duration of 3 months
- ✓Higher rated iOS app (4.8 vs 3.1)
- ✓Higher rated Android app (4.7 vs 2.8)
Why Openbank?
No distinct advantages found vs Betterment.
Key Feature Differences
Better Returns at $10,000
OpenbankOpenbank's High-Yield Savings Account earns more on smaller deposits (approx. $380 vs $344/yr).
Better Returns at $25,000
OpenbankOpenbank's High-Yield Savings Account pulls ahead with larger amounts (approx. $950 vs $859/yr).
Best for Simplicity
BettermentBetterment's Cash Reserve offers 4.00% APY with no bundling, direct deposit requirement or caps.
Best Mobile App Experience
BettermentBetterment offers an iOS app rated 4.8 (vs. 3.1) and Android app rated 4.7 (vs. 2.8)
Shared Benefits
Over a 1-year period, Openbank's High-Yield Savings Account pays $36 more interest on a $10,000 balance than Betterment's Cash Reserve.
*This comparison accounts for Betterment's introductory promotional rate, yet Openbank's standard rate still yields a higher 1-year return.
Non-sponsored link to official site
Non-sponsored link to official site
Top Market Contenders
Betterment vs. Openbank Savings Calculator
You earn $34.9 more with Openbank than Betterment on a $10,000 initial deposit for 1 year*.
*This calculation assumes that APYs remain unchanged for 1 year, and takes into account known promo rate periods, but does not factor in bonuses. You can see how often these banks have changed their rates in the Compare Savings Rates Over Time section below.
Betterment
Cash Reserve
Savings Breakdown
- Interest Earned+$345.10(3.3%)
- Total Contributions$0
- Initial Deposit$10,000
Projected Balance
$10,345.10
Openbank
High-Yield Savings Account
Savings Breakdown
- Interest Earned+$380.00(3.7%)
- Total Contributions$0
- Initial Deposit$10,000
Projected Balance
$10,380.00
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
Still banking with Chase, Bank of America, or Wells Fargo?
On a $10,000 balance, you're missing out on at least $343 per year in interest.
Both Betterment and Openbank dramatically outperform the typical 0.01% APY at traditional big banks.
| Feature | Betterment | Openbank |
|---|---|---|
| APY | 4.00% Range: 3.25% - 4.00% Verified: 8/21/2026 - | 3.80% Verified: 8/19/2026 - |
| Product Name | Cash Reserve | High-Yield Savings Account |
| Minimum Deposit | $0 | $500 |
| Min. Balance for APY | $0 | $0 |
| Monthly Fee | $0 | $0 |
| Compound Frequency | N/A | Monthly |
| In-Branch Access | No | No |
| Account Type | Online Only | Online Only |
| Physical Branches | None | None |
| Direct Deposit Req. | None | None |
| Checking Bundle | No | No |
| Mobile Apps | ||
| FDIC or NCUA Insured | Yes | YesVerify FDIC |
| Zelle® Support | Not Supported | Not Supported |
| BBB Rating | A- | Not Rated |
| Next Steps | Visit SiteVerify at Betterment Non-sponsored link to official site | Visit SiteVerify at Openbank Non-sponsored link to official site |
📈 Compare Savings Rates Over Time
Historical Performance
| Metric | Betterment | Openbank |
|---|---|---|
| Cash Reserve | High-Yield Savings Account | |
Current APY | 4.00% | 3.80% |
Trend | Stable | Stable |
Velocity (bps/mo) | 1.8 | -4.8 |
Days Since Change | 115 | 79 |
7-Month High | 4.00% | 4.09% |
7-Month Low | 3.90% | 3.80% |
Adjustments / Mo | 0.14 | 0.29 |
Volatility Score | 0.013 | 0.032 |
How to read these metrics(Click to expand)
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Compare Betterment's APY of 4.00% with other banks
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|---|---|---|
| Betterment vs Ally Bank | 3.00% | $0 |
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| Betterment vs SoFi Bank | 3.80% | $0 |
| Betterment vs Synchrony Bank | 3.30% | $0 |
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