Comparison

MoBoo vs Delphi

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

Head to head
About

MoBoo

This app uses AI to find books your child will love, matching their interests and reading level. It helps children improve their reading skills with personalized suggestions and progress tracking. Parents can customize recommendations and monitor their child's development.

Highlights
  • AI-powered book recommendations
  • Personalized reading level adjustments
  • Parental controls for topic selection
  • Progress tracking and milestone celebration
  • Wide range of book options
  • Data-backed suggestions from educators
Features
Read full description

MoBoo - Smart Reading for Children, Families, and Readers MoBoo helps children, parents, and readers find books they are more likely to enjoy, understand, and keep reading. MoBoo was first designed to help parents support their children’s reading. Over time, we learned that many users were also readers themselves, especially older children, teens, and young adults looking for books on their own. That helped us improve MoBoo for both families and independent readers. Whether you are helping a child read or looking for books for yourself, MoBoo makes book discovery easier and more personal. WHY CHOOSE MoBoo? • Personalized recommendations: MoBoo suggests books based on age, interests, and reading level. • For parents and readers: Support a child’s reading journey or discover books for yourself. • Build confidence: Find books that match current ability and support reading growth over time. • Parental guidance: Parents can guide recommendations and opt out of selected topics. • Thousands of free classics: Enjoy a wide selection of free classic books. • Progress and rewards: Track reading progress, build habits, and stay motivated. HOW IT WORKS • Set up as a parent or as a reader. • Share age, interests, and reading level. • Receive book recommendations. • Start reading and track progress. WHY MOBOO HELPS The right book can make reading easier, more enjoyable, and more rewarding. MoBoo combines AI-powered recommendations with strong experience in children’s literature to help readers discover books that fit them better. Wherever you are, MoBoo helps make reading more accessible, more personal, and more enjoyable. Download MoBoo today!

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

MoBoo4 screens
Delphi1 screens

Verdict

The call

The clearest difference is in-app purchases: Delphi at none against MoBoo's 10. Delphi also leads on ads (none vs shown) and update cadence (every 4 days vs every 3 months). On price, 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. MoBoo sells 10 in-app purchases, starting at $19.99 per year. Delphi asks for nothing beyond the download.

UpkeepUpdate frequency

MoBoo ships an update every 3 months, Delphi every 4 days. The most recent releases landed on October 7, 2026 and September 27, 2026 respectively.

Scorecard4 real differences · 6 level
MoBoo versus Delphi: the parameters behind the verdict, then further details
ParameterMoBooDelphi
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews66.7% of reviews—
Number of ratings—1 — better
Update frequencyEvery 3 monthsEvery 4 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.0
Further details — not scored
Size77 MB18 MB
Age rating12+4+
DeveloperMoBoo, LLCChenyu Li

Customer experience

MoBoo

Written reviews3 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Delphi

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

MoBoo

Subscriptions10
  • MoBoo Yearly Base Fee$19.991 Year
  • MoBoo Yearly Rec. 2 Children$39.991 Year
  • MoBoo Yearly Rec. 3 Children$49.991 Year
Show 7 more
  • MoBoo Yearly Rec. 4 Children$59.991 Year
  • MoBoo Yearly Rec. 5 Children$69.991 Year
  • MoBoo Yearly Rec. 6 Children$79.991 Year
  • MoBoo Yearly Rec. 7 Children$89.991 Year
  • MoBoo Yearly Rec. 8 Children$99.991 Year
  • MoBoo Yearly Rec. 9 Children$109.991 Year
  • MoBoo Yearly Rec. 10 Children$119.991 Year
None

Delphi

No in-app purchases

Questions

Is MoBoo free?
MoBoo is free to download, with in-app purchases available.
Is Delphi free?
Delphi is free to download, with no in-app purchases.
Do MoBoo or Delphi have ads?
MoBoo shows ads; Delphi does not.
Which is updated more often, MoBoo or Delphi?
MoBoo ships an update every 3 months, and Delphi every 4 days. Most recently, MoBoo was updated on October 7, 2026 and Delphi on September 27, 2026.

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