Planetarium vs Aaru

What is Aaru?

Simulated populations, trained on behavior and outcome data, that forecast what people do when conditions change. It is built for enterprise teams in product innovation, brand, segmentation, scenario planning and strategic communications.

Agent populations built from census and labor data, licensed behavioral data (transactions, store visits, search) and optional customer data.

How do Planetarium and Aaru compare?

Row by row, from each company’s own pages. Where one publishes nothing on a point, the row says so.

How accurate is Aaru?

Mean absolute error of 2.78 points on 2,993 questions. The figure comes from its own report: their September 2026 report across 186 studies, after a sampling adjustment (3.53 before it; 7.62 points on their distribution measure); EY reports a 0.90 median correlation on a blinded recreation.

Planetarium was right 87 times in 100 when it names a winner (575 of 660), on 1,500 published news-headline A/B tests (Upworthy, 2013 to 2015), held out and scored once (October 2026). It named a winner on 660 and called the other 840 too close. Headlines only. The full record is on the accuracy page.

When is Aaru the better choice?

• You are forecasting behavior, such as demand or price response, and want it grounded in transaction and visit data.
• You want to change conditions in a scenario and watch a whole population respond.
• You are an enterprise buying a scoped engagement.

When should you choose Planetarium?

• You want to test a specific ad, message, survey or website yourself, today.
• You want to pick the audience by who they are online, from audiences that are ready to test.
• You want a published price, a free first test and half of studies back in about 34 seconds.

How much does Aaru cost?

Contact us. No price on the site.

Planetarium is self-serve by card: Starter $99, Pro $399, Growth $999 a month. First test free. See pricing.

How was this page made?

We publish this page and sell in this category. Every claim about another company comes from that company’s own public pages, or a paper or partner report it cites, read on October 27, 2026, and each is listed below. Where a company publishes nothing on a point, the page says so; that does not mean it cannot do it.

Each company measures accuracy its own way, on its own tests, so the figures are shown side by side but never ranked as one league table. We did not trial the other products. Our own figures are the ones on our pricing and accuracy pages. Something out of date? Tell us through the contact page and we will correct it.