Platform Comparison

Iowa Electronic Markets vs Manifold Markets

Side-by-side comparison to help you choose the right platform.

Comparison last updated:
Best overall

Iowa Electronic Markets has the stronger overall profile

Iowa Electronic Markets grades better on the weighted mix of trust score, payout reliability, bonus posture, and state reach. Manifold Markets can still be the better fit if one of its specific strengths matters more to you than the overall balance.

Open full comparison
  • Iowa Electronic Markets trust score: 91/100
  • Iowa Electronic Markets payout profile: See platform details
  • Iowa Electronic Markets bonus posture: None

Comparison at a glance

Iowa Electronic Markets

Best overall

CFTC-exempt academic prediction market since 1992. Elections & politics. Research-focused. Small stakes. University of Iowa.

Trust Score
91/100
Rating
4.7/5
Signup Bonus
None
Withdrawal Speed
Not verified
States Available
Not verified
Social
Prediction
State availability varies
Review: Verified
Bonus: None found
Fact-checked 2026-04-08Reviewed by BonusBell Racing & Prediction Markets Desk

Manifold Markets

Community prediction markets. Play-money only. Open-source. News, politics, tech, AI, culture. Global.

Trust Score
74/100
Rating
4.3/5
Signup Bonus
None (play money)
Withdrawal Speed
Not verified
States Available
Not verified
Social
Prediction
Most states
Review: Verified
Bonus: None found
Fact-checked 2026-04-08Reviewed by BonusBell Racing & Prediction Markets Desk

Field-by-field comparison

Use this section when the overall verdict is close or when one specific factor matters more than the aggregate score.

Rating

Iowa Electronic Markets

4.7/5

Manifold Markets

4.3/5

Trust Score

Iowa Electronic Markets

91/100

Manifold Markets

74/100

Review Coverage

Iowa Electronic Markets

Verified

Manifold Markets

Verified

Bonus Coverage

Iowa Electronic Markets

None found

Manifold Markets

None found

Last Fact-check

Iowa Electronic Markets

2026-04-08

Manifold Markets

2026-04-08

Signup Bonus

Iowa Electronic Markets

None

Manifold Markets

None (play money)

Market

Iowa Electronic Markets

Prediction markets

Manifold Markets

Prediction markets

Regulatory Type

Iowa Electronic Markets

SOCIAL

Manifold Markets

SOCIAL

Founded

Iowa Electronic Markets

Manifold Markets

Parent Company

Iowa Electronic Markets

University of Iowa

Manifold Markets

Manifold Inc

Min Deposit

Iowa Electronic Markets

$5

Manifold Markets

$0

Min Withdrawal

Iowa Electronic Markets

Manifold Markets

Withdrawal Speed

Iowa Electronic Markets

Manifold Markets

Mobile App

Iowa Electronic Markets

Manifold Markets

Live Chat

Iowa Electronic Markets

Manifold Markets

Bonus Codes

Iowa Electronic Markets

Manifold Markets

License

Iowa Electronic Markets

{"regulator":"CFTC","type":"Academic Exemption","status":"Licensed","details":"CFTC-exempt academic trading venue operating since 1992; operated by non-profit University of Iowa; no commercial regulation required"}

Manifold Markets

{"regulator":"None (Play-Money)","type":"Social / Play-Money","status":"Active","details":"Community-created prediction market platform; play-money only; no real-money gambling or CFTC regulation; global access"}

States Available

Iowa Electronic Markets

Manifold Markets

Payment Methods

Iowa Electronic Markets

1 methods

Manifold Markets

1 methods

The table below compares Iowa Electronic Markets and Manifold Markets across the same core discovery metrics: rating, trust score, bonus posture, market type, regulatory posture, founding year, banking minimums, payout speed, app/support signals, licensing, state reach, and payment-method breadth.

Start with state availability and regulatory type, then use trust score, payout speed, and bonus posture as your next filters. Trust score is always shown on a 0–100 scale here, and it should be treated as a risk floor rather than a tiny tiebreaker between two otherwise similar platforms.

If you want a narrative head-to-head, open the canonical comparison page. You can also browse 406 tracked platforms or jump to state-specific rankings when availability matters more than national positioning.

Iowa Electronic Markets

Pros

  • Longest-running prediction market (1992, 33+ years); CFTC-exempt academic venue; high-quality price discovery in elections; research-grade; not-for-profit integrity; institutional credibility

Cons

  • Very small stakes ($5 max historically); limited market variety; small user base vs. commercial platforms; older, less polished UI; academic-first not trader-first

Manifold Markets

Pros

  • Open-source; community-driven; free; zero regulatory burden; accessible global UI; supportive community; creative market types

Cons

  • No real money means no actual incentives; Sweepcash shutdown (March 2025) eroded monetization; limited for serious prediction; smaller ecosystem than commercial platforms; play-money only