Comparison

Highlighter vs AlgoCards

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

Head to head
About

Highlighter

This tool allows you to highlight text and important excerpts directly on web pages within the Safari browser. It remembers your annotations, making it easier to revisit and learn from content effectively and selectively.

Highlights
  • Highlight text on web pages
  • Save annotations
  • Works within Safari browser
  • Effective learning tool
  • Selective content focus
Features
Read full description

Highlighter - Focus on feature As its name, Highlighter is a special tool that helps you to highlight text and excerpts on web pages through Safari browser (base on new Safari Extensions). It can also memorize all your highlights whenever you access your pages. Highlighter is a really helpful and useful for everyone to learn and read effectively and selectively. With ONLY 1$, you can own this amazing tool permanently. So what are you waiting for? PURCHASE RIGHT AWAY!

About

AlgoCards

Features
Read full description

Master coding interviews with 390 problems, company-specific prep lists, and spaced repetition — completely free. The only app with dedicated trading firm and quant interview prep. Practice the exact problems asked at Google, Meta, Amazon, Citadel, Jane Street, Two Sigma, Goldman Sachs, and 20+ more companies. WHAT'S INSIDE: - 390 curated problems with detailed Python solutions - Company-specific problem lists for 30+ companies - SM-2 spaced repetition for optimal review scheduling - Flashcard mode for on-the-go review - Algorithm pattern cheat sheets with code templates - Weakness detection that adapts to your performance COMPANY-SPECIFIC PREP: Filter problems by company and see what they actually ask. Coverage includes: Trading Firms: Citadel, Citadel Securities, Jane Street, Two Sigma, Jump Trading, Hudson River Trading, IMC, DE Shaw, SIG, Virtu, Point72, Millennium FAANG & Big Tech: Google, Meta, Amazon, Apple, Microsoft, Netflix, Uber, Airbnb, LinkedIn, Stripe, TikTok, Databricks, Nvidia, OpenAI, Palantir, and more ALGORITHM PATTERNS: - Arrays & Hashing - Two Pointers & Sliding Window - Binary Search - Stack & Queue - Linked Lists - Trees & Tries - Graphs & BFS/DFS - Dynamic Programming - Greedy - Heaps & Priority Queues - Backtracking SMART REVIEW SYSTEM: 1. Study problems in flashcard or detail mode 2. Rate your confidence after each problem 3. AlgoCards schedules your next review at the scientifically optimal interval 4. Weakness detection identifies your weak patterns and prioritizes them 5. Build lasting pattern recognition, not temporary memorization WHO IT'S FOR: - Software engineers prepping for FAANG and Big Tech - Quant developers targeting trading firms - CS students preparing for internship interviews - Career switchers learning algorithms and data structures 100% FREE. No paywall. No ads. No subscriptions. Every problem, every solution, every feature. Download AlgoCards and prep smarter.

Screenshots

Highlighter4 screens
AlgoCards4 screens

Verdict

The call

The clearest difference is price: AlgoCards at Free against Highlighter's $0.99. Highlighter's advantage is ads (none vs shown) and update cadence (every 4 days vs every 9 days). On in-app purchases, 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

AlgoCards is free to download; Highlighter costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Highlighter ships an update every 4 days, AlgoCards every 9 days. Both last shipped on October 11, 2026.

Scorecard3 real differences · 7 level
Highlighter versus AlgoCards: the parameters behind the verdict, then further details
ParameterHighlighterAlgoCards
Price$0.99Free — better
Rating3.8 (5 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings5 — better—
Update frequencyEvery 4 days — betterEvery 9 days
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size1 MB61 MB
Age rating4+4+
DeveloperMai Tuan VietRyan Hamby

In-app purchases

None

Highlighter

No in-app purchases

None

AlgoCards

No in-app purchases

Questions

Is Highlighter free?
Highlighter costs $0.99, with no in-app purchases.
Is AlgoCards free?
AlgoCards is free to download, with no in-app purchases.
Do Highlighter or AlgoCards have ads?
AlgoCards shows ads; Highlighter does not.
Which is updated more often, Highlighter or AlgoCards?
Highlighter ships an update every 4 days, and AlgoCards every 9 days. Most recently, Highlighter was updated on October 11, 2026 and AlgoCards on October 11, 2026.

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