Comparison

BoostLectura vs Delphi

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

BoostLectura

Features
Read full description

BoostLectura is a reader for the PDFs and EPUBs you already have. Import a file and start reading in seconds. Everything you get out of the book — the highlights, the notes, the answers to the questions you'd normally skip past — stays with the book. FEATURES • Read PDFs and EPUBs in a reader that stays out of the way. • Ask about anything in the book you're reading. The answers come from the book itself, not from the internet. • Highlight a passage, write a note next to it, and find both later. • Pick your own background and text colors. Paper white at noon, dark at 1am. • Sync your library, reading progress, highlights and notes across your iPhone, iPad and Mac. • Your books live on your device. No connection needed to open one. • Keep a widget on the Home Screen with whatever you're reading now. Made for people just getting into reading, and for seasoned readers too.

About

Delphi

This app provides a synchronized reading and listening experience for classic literature. As the audio plays, the text is highlighted, and you can tap any sentence to resume narration from that exact point. Enjoy offline access to a curated library of timeless works.

Highlights
  • Synchronized text and audio narration
  • Tap to play sentence feature
  • Offline reading and listening
  • Automatic resume functionality
  • Bookmark saving
  • Background playback
Features
Read full description

Delphi is a reader for the great books — with narration that stays in sync with the text. As the audio plays, the current sentence is highlighted and the page scrolls with it. Tap any sentence to hear it from exactly that point. Close the app mid-chapter and Delphi brings you back to the same spot, ready to continue. THE LIBRARY • Thucydides — History of the Peloponnesian War • Augustine — Confessions • Plato — Dialogues (Apology, Phaedo, Symposium, Republic and more) • Goethe — Faust • Aristotle — Nicomachean Ethics and Politics • The Bible (KJV) — Old Testament • Hamilton, Madison, Jay — The Federalist Papers • Machiavelli — The Prince • Dostoevsky — Crime and Punishment MADE FOR LISTENING • Word-for-word sync: the sentence being read is always highlighted • Tap to play: touch any line to jump the narration there • Background playback with full lock screen and Control Center controls • Skip back and forward 15 seconds, scrub anywhere MADE FOR READING • The complete text of every work is built in — no connection needed to read • Download any work's audio once and listen fully offline • Bookmarks for every book: save a passage, jump back to it anytime • Automatic resume: pick up exactly where you stopped, even after restarting No account. No subscription. No ads. Just the classics, read to you.

Screenshots

BoostLectura4 screens
Delphi1 screens

Verdict

The call

The clearest difference is in-app purchases: Delphi at none against BoostLectura's 4. Delphi also leads on update cadence (every 4 days vs every 9 days). On price, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. BoostLectura sells 4 one-off in-app purchases. Delphi asks for nothing beyond the download.

UpkeepUpdate frequency

BoostLectura ships an update every 9 days, Delphi every 4 days. Both last shipped on October 13, 2026.

Scorecard2 real differences · 7 level
BoostLectura versus Delphi: the parameters behind the verdict, then further details
ParameterBoostLecturaDelphi
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 9 daysEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size42 MB18 MB
Age rating12+4+
DeveloperDaniel Matias Carvajal CarvajalChenyu Li

In-app purchases

4 purchases

BoostLectura

One-time4
  • Small Credits Pack$1.99
  • Medium Credits Pack$4.99
  • Plus Credits Pack$9.99
Show 1 more
  • Max Credits Pack$19.99
None

Delphi

No in-app purchases

Questions

Is BoostLectura free?
BoostLectura is free to download, with in-app purchases available.
Is Delphi free?
Delphi is free to download, with no in-app purchases.
Do BoostLectura or Delphi have ads?
Neither BoostLectura nor Delphi shows ads.
Which is updated more often, BoostLectura or Delphi?
BoostLectura ships an update every 9 days, and Delphi every 4 days. Most recently, BoostLectura was updated on October 13, 2026 and Delphi on October 13, 2026.

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