Comparison

LeetCode vs Synaelo

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

Head to head
About

LeetCode

Practice coding challenges and prepare for technical interviews on the go. Track your progress, discover company-specific questions, and stay updated on coding contests. New content and features are added monthly.

Highlights
  • Search and discover company questions
  • Practice favorite coding challenges
  • Manage challenge lists and wishlists
  • Track personal progress with profile view
  • Stay notified of contests and streaks
  • Register for contests and sync to calendar
Features
Read full description

One LeetCode a day keeps your reasoning in play. Introducing LeetCode for iOS and iPadOS. Enjoy LeetCoding right at your fingertips — jump in for quick practice, browse your collections, and stay on top of important events and progress. With LeetCode in the palm of your hand, you can easily: • Search and discover the latest company questions. • View and quickly practice your favorite challenges right in the palm of your hand. • Manage your lists or add to your wishlist to practice later. • Keep track of your personal progress with a rich profile view and widgets. • Stay notified and keep your streak alive — level up with new challenges and quests every day. • Register for contests and sync them to your calendar. Live Activities keep you updated on contest progress — so you never miss a moment. • And more content and features coming every month… Terms of Services: https://leetcode.com/terms/ Privacy Policy: https://leetcode.com/privacy/

About

Synaelo

Transform your notes, PDFs, and images into engaging, personalized learning lessons. This app creates a scrollable feed with explanations, examples, and questions tailored to your study style and material.

Highlights
  • Personalized learning feed
  • Converts notes, PDFs, images
  • Adjustable lesson depth
  • Multiple explanation styles
  • Interactive questions
  • Progress tracking
Features
Read full description

Synaelo turns your notes into lessons you’ll actually want to finish. Synaelo transforms PDFs, text files, and images of notes into a personalized, vertically scrollable learning feed. Choose how deeply you want to study and how you learn best, then move through short lessons created around your material. LEARN YOUR WAY • Simple and detailed explanations • Visual diagrams • Real-world examples • Step-by-step breakdowns • Stories and analogies • Fast summaries • Multiple-choice, prediction, and true-or-false questions PERSONALIZED TO YOUR NOTES Choose a Quick Review, Balanced Lesson, Full Lesson, or questions-only experience. Synaelo adapts the length, difficulty, language, and teaching formats to your preferences. STUDY WITHOUT LOSING YOUR PLACE Save useful lessons, switch between study sets, track your progress, and return to where you stopped. FROM NOTES TO A SCROLLABLE FEED Upload your material, select your preferences, and let Synaelo organize the important ideas into focused lessons that are easier to move through. Synaelo includes a limited number of free uploads. Synaelo Plus provides additional monthly uploads, Full Lessons, more teaching preferences, and expanded study-set access. Terms of Use: https://synaelo.com/terms Privacy Policy: https://synaelo.com/privacy

Screenshots

LeetCode4 screens
Synaelo4 screens

Verdict

The call

The clearest difference is ratings volume: LeetCode at 686 against Synaelo's 3. Synaelo's advantage is rating (5.0 vs 4.8) and update cadence (every 5 days vs fortnightly). On price, ads, in-app purchases and monetization model 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. LeetCode sells 2 in-app purchases, starting at $35.00 per month and Synaelo sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Synaelo holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: LeetCode has 686 ratings behind it against 3, so its average is the more settled of the two.

UpkeepUpdate frequency

LeetCode ships an update fortnightly, Synaelo every 5 days. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
LeetCode versus Synaelo: the parameters behind the verdict, then further details
ParameterLeetCodeSynaelo
PriceFreeFree
Rating4.8 (686 ratings)5.0 (3 ratings) — better
Positive reviews45.3% of reviews—
Number of ratings686 — better3
Update frequencyFortnightlyEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFreemium
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.0 — better
Further details — not scored
Size110 MB7 MB
Age rating4+12+
DeveloperLeetCodeMichael Cecilio

Customer experience

LeetCode

All ratings686 ratings
Positive93.9%
Neutral2.2%
Negative3.9%
Written reviews53 reviews
Positive45.3%
Neutral28.3%
Negative26.4%

Synaelo

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

LeetCode

Subscriptions2
  • LeetCode Premium Monthly$35.001 Month
  • LeetCode Premium Yearly$159.001 Year
2 purchases

Synaelo

Subscriptions2
  • Synaelo Plus Monthly$6.991 Month
  • Synaelo Plus$69.991 Year

Questions

Is LeetCode free?
LeetCode is free to download, with in-app purchases available.
Is Synaelo free?
Synaelo is free to download, with in-app purchases available.
Which has better reviews, LeetCode or Synaelo?
Synaelo is rated higher. LeetCode averages 4.8 out of 5 from 686 ratings, while Synaelo averages 5.0 from 3 ratings.
Do LeetCode or Synaelo have ads?
Neither LeetCode nor Synaelo shows ads.
Which is updated more often, LeetCode or Synaelo?
LeetCode ships an update fortnightly, and Synaelo every 5 days. Most recently, LeetCode was updated on November 6, 2026 and Synaelo on October 31, 2026.

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