How the tracker finder decides, and what it will not tell you

What does the finder check?

Seven questions, each tied to one fact: the format you read, your phone, whether you want goals or stats, how social you want to be, how much the privacy label matters, how you want to pay, and whether you often lose the thread of a book. Some answers narrow nothing, such as 'A subscription is fine', so they are not counted.

What do the stamps mean?

Every fact on a library card has one of three stamps. On record means the app's own listing, website or help pages describe it. Not offered means those pages say it is absent. Not in our sources means we did not find it, which is not the same as absent. The finder counts On record as a match and lists the other two separately, so you can see the difference.

How are apps ordered?

By the number of matches, then by fewer Not offered results, then alphabetically. That is all. There are no weights, so no answer counts more than another.

Example 1: an audiobook listener who loses the thread

This reader listens, uses an iPhone, does not care about stats or clubs, does not want a subscription, and often puts books down. Three answers count.

Magic Bookmark matches all three because it finds your place from the last phrase you heard and uses per-book credits with no subscription. It would drop quickly if this reader also wanted goals or clubs.

Example 2: a print reader in a club, on Android

This reader reads paper books, uses Android, wants stats, reads with a club, avoids apps whose label lists tracking, and wants to pay nothing. Six answers count.

Here the club-friendly, free, Android trackers lead, and Magic Bookmark has the most Not offered results, because it has no stats, clubs or Android app and each book needs a credit.

Example 3: a mixed-format reader who wants stats and some social

This reader mixes formats, wants a web version, wants stats and some social features, and avoids tracking labels. Five answers count.

What will the finder not tell you?

• Whether you will enjoy using an app. We did not test the apps hands-on.
• Anything an app does but does not publish. Those show as Not in our sources.
• Prices outside the US App Store or the app's own site, or changes after our last update on 2026-10-11.

Where do the facts come from?

From the library cards, which come from each app's store listing, website and help pages, each with a source link. How profiles work has the full method.