This just in: KindCon 2026 is hitting Nashville! 🎸 Join us September 1-3

This just in: KindCon 2026 is hitting Nashville! 🎸 Join us September 1-3

iWave vs. Windfall
How We Compare

iWave vs. Windfall

Searching for a wealth screening tool? See why top fundraising teams choose iWave over Windfall. iWave delivers award-winning customer support, real-time insights—and the industry's most accurate and comprehensive wealth and philanthropic data.

iWave is chosen by these organizations (and thousands more!)

Heart & Stroke Foundation Logo
Cornell University logo
Alzheimer's Association Logo
CARE USA Logo
Direct Relief Logo
Boys & Girls Clubs of America Logo
NPR logo
Medecins Sans Frontiers Logo
Children International Logo
Special Olympics Logo
Room to Read Logo
Museum of Fine Arts Boston Logo
New York Public Library Logo
Vanderbilt University Logo
The National MS Society Logo
Innovation

Innovation

As the industry-leading data engine within the Kindsight platform, iWave empowers you to engage prospects at the perfect moment with exclusive, real-time Live Profiles and interactive dashboards.
iWave
Windfall
Multi-Lens Modeling

Evaluate donors against multiple goals to develop highly-personalized campaigns, identify opportunities for increased membership, and more.

Multi-Lens Modeling is not available.

iWave
Windfall
Multi-Lens Modeling

Evaluate donors against multiple goals to develop highly-personalized campaigns, identify opportunities for increased membership, and more.

Multi-Lens Modeling is not available.

platform icon 3

Depth & Quality of Data

Fuel your fundraising with the industry's most robust and accurate intelligence, featuring the largest verified charitable giving database and comprehensive wealth indicators.
iWave
Windfall
Data Coverage

Individuals, corporations and foundations in US and Canada, including those with ultra high net worth and net worth of less than $1 million.

Focuses on affluent ($1M+) households in the US.

Data Quality

44+ premium datasets that provide robust and superior quality data including: Cotality (Real Estate), Candid (Foundations), Dun and Bradstreet, and Thomson Reuters.

Primarily centered on household net worth with additional indicators and accuracy is not verifiable because data sources and details are not provided.

Real Estate

Covers 150M+ household records, including mortgage information. Plus, median home price of a county is used in wealth screening and capacity scoring calculations to avoid overinflation.

Publicly states US household coverage; accuracy methodology and benchmarks are not disclosed.

Net Worth & Giving Capacity

Full transparency of giving capacity calculations, data sources, and actual verifiable data points.

Data accuracy is not verifiable because data sources and details are not provided for net worth.

News & Obituaries Data

Track mentions in news articles and obituaries and get alerted when new articles are added.

No native news/obituary monitoring advertised.

iWave
Windfall
Data Coverage

Individuals, corporations and foundations in US and Canada, including those with ultra high net worth and net worth of less than $1 million.

Focuses on affluent ($1M+) households in the US.

Data Quality

44+ premium datasets that provide robust and superior quality data including: Cotality (Real Estate), Candid (Foundations), Dun and Bradstreet, and Thomson Reuters.

Primarily centered on household net worth with additional indicators and accuracy is not verifiable because data sources and details are not provided.

Real Estate

Covers 150M+ household records, including mortgage information. Plus, median home price of a county is used in wealth screening and capacity scoring calculations to avoid overinflation.

Publicly states US household coverage; accuracy methodology and benchmarks are not disclosed.

Net Worth & Giving Capacity

Full transparency of giving capacity calculations, data sources, and actual verifiable data points.

Data accuracy is not verifiable because data sources and details are not provided for net worth.

News & Obituaries Data

Track mentions in news articles and obituaries and get alerted when new articles are added.

No native news/obituary monitoring advertised.

security icon

Privacy

iWave
Windfall
Proprietary Internal Giving Data

All internal giving data remains completely private to your organization and is not used in any modeling or datasets. This includes custom donations or custom real estate records that your organization may add to a profile.

Client data is siloed and not sold to third parties. Does not disclose a list of data sources.

iWave
Windfall
Proprietary Internal Giving Data

All internal giving data remains completely private to your organization and is not used in any modeling or datasets. This includes custom donations or custom real estate records that your organization may add to a profile.

Client data is siloed and not sold to third parties. Does not disclose a list of data sources.

Customization & Flexibility

Customization & Flexibility

Pinpoint your perfect prospects with unparalleled flexibility, using the only Affinity Scores in the industry and deep-dive searches across unlimited lists.
iWave
Windfall
Screening & Scoring Customization

Adjustable parameters so you can define capacity settings, select affinity to giving interests, and choose scoring weights for a prospect’s capacity, affinity and propensity (internal and external giving history).

No multi-lens weighting; supports segmentation/workflows.

Individual Dataset Searches

Allows deep-dive searches within each of the 44+ datasets.

Not available.

Prospect Lists

Unlimited prospect lists with contact information, including individuals, corporations, and foundations.

Prospect identification and segmentation available.

iWave
Windfall
Screening & Scoring Customization

Adjustable parameters so you can define capacity settings, select affinity to giving interests, and choose scoring weights for a prospect’s capacity, affinity and propensity (internal and external giving history).

No multi-lens weighting; supports segmentation/workflows.

Individual Dataset Searches

Allows deep-dive searches within each of the 44+ datasets.

Not available.

Prospect Lists

Unlimited prospect lists with contact information, including individuals, corporations, and foundations.

Prospect identification and segmentation available.

Icon of people

Customer Experience

Trust the platform rated #1 by industry clients for ease of use and customer satisfaction, backed by award-winning service and hundreds of verified reviews.
iWave
Windfall
Industry Focus

Exclusively education, healthcare, and nonprofit.

For-profit and nonprofit.

Customer Support

4.6-star average rating on G2* across 400+ reviews and a seven-time recipient of the Stevie Award for Sales and Customer Service.

Relatively few G2 reviews to date.*

iWave
Windfall
Industry Focus

Exclusively education, healthcare, and nonprofit.

For-profit and nonprofit.

Customer Support

4.6-star average rating on G2* across 400+ reviews and a seven-time recipient of the Stevie Award for Sales and Customer Service.

Relatively few G2 reviews to date.*

Winter 2026 Fastest Implementation

G2 Winter 2026 Fastest Implementation

G2 high performer badge

G2 Winter 2026 High Performer

Bronze Stevie award 2025

2025 Stevie Award for Sales & Customer Service

Stevie 2026 Bronze Winner

2026 Stevie Award for Sales & Customer Service

*As of Jan 2026. Scores are out of 5.

Don't Just Acquire, Upgrade! Donor Upgrade Strategies to End the Year Strong