Comparison

BitBitCS vs Solve It! Pre

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

Head to head
About

BitBitCS

Features
Read full description

Supercharge your Computer Science learning with BitBitCS — an AI-native learning platform that transforms technical content into bite-sized lessons. BitBitAI processes hundreds of influential Computer Science books, design specifications, and academic papers, helping you learn up to 20x faster than traditional reading. Whether you have 10 minutes or an hour a day, BitBitCS accelerates your journey from foundational concepts to advanced expertise. Our AI technology analyzes authoritative textbooks and academic publications, identifying core concepts and connecting related ideas in clear, digestible formats. Master essential topics including: - Data Structures and Algorithms - Domain-Driven Design - Distributed Systems - DevOps - Cybersecurity Start with our extensive free books and unlock premium content for advanced topics. Key Features: 1. Condensed, Clear Content - Step-by-step explanations of complex CS concepts - Practical examples for every topic - Learning format proven 5x more effective than reading traditional textbooks 2. AI-Enhanced Learning - Compressed learning paths that turn WEEKS of reading into DAYS - Intelligently organized essential knowledge - Optimized information retention 3. Flexible Learning Schedule - Master new concepts in as little as 10 minutes daily - Focus on core principles from trusted sources - Stay current with latest CS trends Pricing: - Free tier: Access to fundamental CS books - Premium tier: Advanced topics and complete library access Transform your CS learning journey with BitBitCS — the intelligent way to build your technical expertise. This app is subject to Apple's standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Solve It! Pre

This app teaches pre-algebra concepts through animated visuals and interactive games. It breaks down complex ideas into short lessons, offering practice and quizzes with immediate feedback. Users can track their progress and play engaging games to reinforce learned skills.

Highlights
  • Animated visual explanations for math rules
  • 66 short lessons across 14 tracks
  • Learn, practice, and quiz format
  • Interactive games for skill reinforcement
  • Progress tracking and results tab
  • No timers or lives in learning mode
Features
Read full description

Solve It! teaches pre-algebra, the math that comes before Algebra 1, one idea at a time, with animated pictures that show why each rule works: why two negatives make a positive, why you flip and multiply, why the same move keeps a balance level. When a skill clicks, the Play tab turns it into a quick game. LEARN • 14 tracks and 66 short lessons on five paths. Numbers: Negative numbers, Fractions and decimals, Exponents and roots, Scientific notation, Real numbers. Proportion: Ratios and rates, Percent. Algebra: Expressions, Equations, Systems of equations. Graphs: Lines and slope, Functions. Geometry: Pythagorean theorem, Volume • Pictures for every idea: a thermometer, zero pairs, hops on a number line, x-bags, algebra tiles, an area model, a balance that makes the same move on both sides, ratio tables, double number lines, tape diagrams, percent bars, fraction bars, decimal grids, long division, square and cube stacks, slope steps on a grid, function machines, lines that cross, squares on a right triangle's sides, solids that fill up • Every lesson goes learn, practice, quiz, with no timer or lives • A wrong answer brings the picture back with a hint about that exact slip: adding the bottoms, flipping the wrong fraction, getting the sign wrong, reading a percent as dollars • Tell it where you are and it suggests a first lesson. Nothing is locked behind progress PLAY • Seven games: Integer blitz, Solve for x, Ratio tables, Percent of, Powers and roots, Find the slope, Right triangles • Pick the operations for Integer blitz, and one-step, two-step, negative or x-on-both-sides equations for Solve for x • Beat the clock for 1, 2 or 3 minutes with 3 lives, or get 20, 40 or 60 in a row on a stopwatch • Four answer choices, a ready-set-go countdown, and a cheer at streaks of 5, 10 and 20 • Best scores and times for every game and challenge, lesson progress and recent games on the Results tab PLAYERS • Optional local players, each with a name and an animal avatar • Each player's progress stays on this device FREE TO START All of Negative numbers is free, every lesson, and so is Integer blitz with every challenge. So is the first lesson of every other track. One in-app purchase unlocks everything else, once: the other 48 lessons and the Solve for x, Ratio tables, Percent of, Powers and roots, Find the slope and Right triangles games. No subscription. Family Sharing is on, so one purchase covers your family. PRIVATE AND AD-FREE No accounts, no ads, no analytics, no tracking. Your progress stays on your device. Works on iPhone and iPad, in portrait or landscape, in light or dark mode, with sound effects you can turn down or off.

Screenshots

BitBitCS4 screens
Solve It! Pre4 screens

Verdict

The call

The clearest difference is iOS requirement: BitBitCS at 13.0 against Solve It! Pre's 17.0. On price, update cadence, ads and in-app purchases 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. BitBitCS sells 1 in-app purchase, starting at $4.99 per month and Solve It! Pre sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

BitBitCS ships an update every 8 days, Solve It! Pre every 6 days. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

Scorecard1 real difference · 8 level
BitBitCS versus Solve It! Pre: the parameters behind the verdict, then further details
ParameterBitBitCSSolve It! Pre
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 8 daysEvery 6 days — better
AdsNoNo
In-app purchasesYesYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13.0 — better17.0
Further details — not scored
Size33 MB10 MB
Age rating4+4+
DeveloperLIN SUNZubin Khavarian

In-app purchases

1 purchases

BitBitCS

Subscriptions1
  • Premium$4.991 Month
1 purchases

Solve It! Pre

One-time1
  • Full Version$4.99

Questions

Is BitBitCS free?
BitBitCS is free to download, with in-app purchases available.
Is Solve It! Pre free?
Solve It! Pre is free to download, with in-app purchases available.
Do BitBitCS or Solve It! Pre have ads?
Neither BitBitCS nor Solve It! Pre shows ads.
Which is updated more often, BitBitCS or Solve It! Pre?
BitBitCS ships an update every 8 days, and Solve It! Pre every 6 days. Most recently, BitBitCS was updated on October 25, 2026 and Solve It! Pre on October 29, 2026.

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