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Best Book Discovery Apps for iPhone (2026)

8 apps ranked S through F · · Ranked by AppTierList, computed, never sold · JSON

Goodreads: Book Tracker & More is the top-ranked of 8 book discovery apps on iPhone, at S tier with 4.8/5 from 758,860 ratings.

  1. 1
    Goodreads: Book Tracker & MoreS
    Free · ★ 4.8 · 758,860 ratings · score 98
  2. 2
    Inkitt: Books, Novels, StoriesS
    Free download · ★ 4.6 · 9,947 ratings · score 92
  3. 3
    Margins: Book TrackerA
    Free + IAP · ★ 4.9 · 19,678 ratings · score 87
  4. 4
    Book of the MonthA
    Free download · ★ 4.9 · 84,086 ratings · score 84
  5. 5
    Fable: Track & Discuss BooksB
    Free + IAP · ★ 4.8 · 81,987 ratings · score 77

What belongs in this list

Find new books to read through recommendations, trends and reviews from other readers.

Not here: a general video app alone; a store that only sells books alone; a reading tracker for books you already own alone; a book scanner and library catalog alone; a movie or quote discovery app alone

How we pick

For this list we ask the App Store the same searches a person would, in several countries, and keep every app it returns. A model reads each app's listing and rejects the ones that only mention the use case. Every app that stays is scored out of 100 from four parts, each 0 to 100 and averaged with no weights: its App Store rating, how many people rated it, where the App Store itself ranks it for this list's searches, and how recently its current version shipped. An app showing Apple's Editors' Choice badge gets a fifth part of 100, which can only lift its score. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier. Read the full method →

S
GoodreadsInkitt
A
MarginsBook of the…
B
FableStoryGraphLikewise
C
PI.FYI
D
None at D yet
F
None at F yet

Compare every app

  1. 1
    Goodreads: Book Tracker & MoreS
    Free · ★ 4.8 · 758,860 ratings · score 98 · best in class
  2. 2
    Inkitt: Books, Novels, StoriesS
    Free download · ★ 4.6 · 9,947 ratings · score 92 · best in class
  3. 3
    Margins: Book TrackerA
    Free + IAP · ★ 4.9 · 19,678 ratings · score 87 · excellent
  4. 4
    Book of the MonthA
    Free download · ★ 4.9 · 84,086 ratings · score 84 · excellent
  5. 5
    Fable: Track & Discuss BooksB
    Free + IAP · ★ 4.8 · 81,987 ratings · score 77 · good · provisional
  6. 6
    StoryGraph: Reading TrackerB
    Free download · ★ 4.5 · 3,590 ratings · score 77 · good
  7. 7
    Likewise: Movie, TV, Book RecsB
    Free + IAP · ★ 4.7 · 46,682 ratings · score 70 · good · provisional
  8. 8
    PI.FYI - Log Your FavoritesC
    Free download · ★ 4.9 · 3,217 ratings · score 68 · situational · provisional

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Questions people ask

What is the best book discovery app for iPhone?
Goodreads: Book Tracker & More, S tier, ranked #1 of 8, rated 4.8 by 758,860 people.
Which book discovery apps are free?
8 of 8 are free to download: Goodreads: Book Tracker & More (S), Inkitt: Books, Novels, Stories (S), Margins: Book Tracker (A), Book of the Month (A) and more. 3 of them sell in-app purchases. 1 reports no in-app purchases.
Which book discovery app has the best App Store rating?
Book of the Month at 4.9 from 84,086 ratings.
How many book discovery apps reach S or A tier?
4 of 8. Tiers follow fixed score bands: S from 90, A from 80, B from 70, C from 60, D from 50, F below. The list's leader is S if it scores 80 or more. On a list of 20 or more ranked apps, a tier from S to D takes in new apps only up to a quarter of the top 40: an app pushed out of a full tier falls to the next tier with room, and F takes the rest. An app already in a tier keeps its place while the tier is at most 2 apps over a quarter; past that, only the apps over that margin go down, lowest score first. Equal scores share a tier, and no app has a better tier than an app ranked above it. An app keeps its tier until its score passes the band edge by more than 1 point, or a full tier or the order above moves it. Only the top 40 of a list get a tier.

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