Free Sensor Tower Alternatives: What Each Really Includes

Short answer

No free tool replaces all of Sensor Tower, so start with what you need. For download and revenue estimates on other apps, try AppTweak’s free Starter plan or AppGoblin. For keyword rankings, use a rank tracker. For your own apps, App Store Connect gives you real numbers for free, and no estimate can beat that.

OpenASO covers only the keyword side. It does not estimate downloads or revenue. OpenASO publishes this comparison and is one of the options in it. Plans come from each vendor’s site, checked November 1, 2026.

What do you actually want from Sensor Tower?

People usually want one of two different things, and most tools do only one of them well:

• Keyword rankings. Which apps appear for a search term, and where. Anyone can check this in the store, so it is observed data.
• Download and revenue estimates. How much another app earns or how often it is installed. Apple shows you these numbers only for your own apps, so a vendor models the rest.

Sensor Tower itself customizes pricing per customer and publishes no list price. Its product page says you can sign up for free, but that full access needs a paid plan.

What does each free option include?

Some of these need a closer look.

AppGoblin is the broadest free option. Its pricing page lists MAU, revenue, an ASO keyword dashboard, keyword tracking, and ad intelligence on the free tier. On an app page we opened, revenue appeared as a rough bracket labelled as an estimate, and MAU was attributed to AppGoblin’s estimates. We did not find a published method for those figures. It also shares a free data dump under CC BY 4.0, with a limited file of about 2 million apps with installs and total ratings. Check the attribution terms before you reuse it.

AppTweak Starter is the clearest free source of estimates from an established vendor. The page describes it as download and revenue estimates at no cost, with one month of historical data. It also says estimates cover “past month + lifetime”, which does not quite match that limit, so confirm the lookback yourself.

Appark sends mixed signals. Its home page says the Free plan includes one month of download and revenue trends, while its pricing table shows no “Download & revenue metrics” on Free, and its FAQ says to upgrade for download and revenue analysis. Expect charts, not full per-app figures.

Similarweb’s overview page describes a free tool with estimated active users, ranking data, and download numbers. On the one app page we opened, ranks were visible, active users sat behind an unlock prompt, and no download or revenue figures appeared. Revenue is a separate paid add-on, and its packages go through sales.

Appfigures Starter tracks up to 5 of your apps, but its pricing lists 0 download and revenue estimates and 0 premium competitors. It is a reporting tool for your own apps at this tier, and not a way to look up rivals.

How are estimates different from real data?

An estimate is a model’s guess at a number that only the store and the developer know. Real data comes from the store itself.

Sensor Tower says it “uses proprietary modeling and panel-based methodologies” to estimate downloads, revenue, and usage, and describes the output as useful for directional analysis. Appfigures says its models learn from apps that share real data, and that it has to make assumptions. Appark says its figures are not official sales reports, and suggests using them for trends and relative comparisons. AppGoblin’s and Similarweb’s free pages explain little about method.

So third-party download figures are estimates, whichever vendor shows them and however exact they look. They suit questions such as “is this app growing?” or “is this niche big or tiny?”. They are a poor basis for a precise forecast, and two vendors can disagree about the same app.

App Store Connect’s App Analytics is the opposite case. It shows downloads, sources, conversion, and proceeds for apps you manage. Even here, Apple has limits: usage metrics include only people who agreed to share diagnostics with developers, and some sources appear only above a minimum data threshold.

How can you test an estimate yourself?

Look up your own app. Compare a vendor’s figure with your real numbers in App Store Connect over the same dates and countries. Check how Apple defines the metric first, because its total downloads include redownloads, and a vendor may count differently. One app is a small sample, and a small app may behave differently from a big one, but it tells you more than a vendor’s claim.

Which should you pick?

• You want a rough size for a competitor. Check AppTweak Starter and AppGoblin, and compare the two.
• You want keyword positions. Use the free keyword rank checker for one-off checks. For a daily history on a Mac, use OpenASO, and read how to track rankings.
• You want your own numbers. Use App Store Connect.
• You need Google Play keyword tracking. OpenASO will not help, so see our free tools comparison.
• You need history, exports, and many markets. That is what you pay for, and the free tiers above will not cover it. The ASO tool comparison lists prices.

Start by writing down the one question you need answered. If it is about a keyword, you may not need estimates at all.