Comparison

Casty vs Algebra Handbook

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

Head to head
About

Casty

Transform PDF documents into engaging podcasts with live transcripts and a built-in dictionary. Listen offline to educational content in Japanese or English after generation.

Highlights
  • Convert PDFs to podcasts
  • Live transcripts
  • Built-in dictionary
  • Offline listening
  • Japanese and English support
Features
Read full description

Convert PDF files into educational podcasts in Japanese or English Live transcript with built-in dictionary. Offline listening available after generation.

About

Algebra Handbook

Features
Read full description

Algebra Handbook is an offline guide to school algebra and the beginnings of calculus: 159 articles in 16 topics, each with the key formula, a clear explanation, worked examples and the mistakes to avoid. EVERY TOPIC IN ONE PLACE Numbers and calculations, powers, polynomials, algebraic fractions, roots, linear equations and systems, quadratic equations, other equations and systems, inequalities, functions and graphs, sequences and progressions, exponents and logarithms, trigonometry, derivatives, antiderivatives and integrals, combinatorics and probability. SEE WHY IT IS TRUE 119 rules and theorems come with a proof or a derivation, from the quadratic formula to the derivative of sine. 17 visual proofs show the idea in pictures, step by step: the square of a sum, completing the square, the sum 1 + 2 + … + n, the unit circle and more. GRAPHS THAT MOVE 39 live graphs: move the sliders and watch the parabola shift, the sine wave stretch, the exponential grow and the tangent line slide along the curve. A SOLVER THAT SHOWS ITS WORK 20 step-by-step solvers take your own numbers: linear, quadratic and biquadratic equations, systems, inequalities, absolute values, progressions, gcd and lcm, fractions, roots, logarithms, exponential and trigonometric equations, the vertex of a parabola, function analysis, the tangent line, integrals and combinatorics. Check your homework and see exactly where a mistake happened. PRACTICE WITHOUT END 16 practice topics generate new problems every time, with instant feedback, an explanation after each answer, stars and a count of solved problems. LEARN FROM EXAMPLES AND MISTAKES 318 fully worked examples and 555 typical mistakes that cost marks. "When it applies" shows exactly where a rule stops working. REVISION TOOLS A cheat sheet of formulas without the explanations, 20 reference tables (squares and cubes, primes, divisibility rules, trigonometric values, reduction formulas, derivatives, antiderivatives and more), a table of notation and a step-by-step guide to solving problems. FIND IT FAST Search by rule, formula or keyword, filter by topic or by favorites. TWENTY LANGUAGES English, Spanish, Arabic, French, Hindi, Thai, Russian, German, Italian, Portuguese, Dutch, Swedish, Danish, Norwegian, Turkish, Vietnamese, Japanese, Korean and Simplified and Traditional Chinese. Formulas follow each language's school notation, for example tan x or tg x, and the decimal point or comma. Written as a study aid and a quick reference following standard school treatments of algebra. Corrections are welcome at the support address. Algebra Pro An AI algebra tutor right on your device Problem scanner: recognize text from a photo and check it before asking the tutor AI requires iOS 26 and a compatible device with Apple Intelligence enabled. Monthly · Yearly · Lifetime. You can manage or cancel your subscription in Settings › Apple ID › Subscriptions. One-time purchase. No automatic renewal. Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Casty4 screens
Algebra Handbook4 screens

Verdict

The call

The clearest difference is in-app purchases: Casty at none against Algebra Handbook's 3. Casty also leads on update cadence (every 2 days vs every 3 weeks). 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. Algebra Handbook sells 3 in-app purchases, starting at $1.99 per month. Casty asks for nothing beyond the download.

UpkeepUpdate frequency

Casty ships an update every 2 days, Algebra Handbook every 3 weeks. The most recent releases landed on October 18, 2026 and October 24, 2026 respectively.

Scorecard2 real differences · 7 level
Casty versus Algebra Handbook: the parameters behind the verdict, then further details
ParameterCastyAlgebra Handbook
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 days — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size23 MB51 MB
Age rating4+4+
DeveloperWai Yip LiOleg Korunov

In-app purchases

None

Casty

No in-app purchases

3 purchases

Algebra Handbook

Subscriptions2
  • Algebra Pro — Monthly7 Days trial$1.991 Month
  • Algebra Pro — Yearly7 Days trial$9.991 Year
One-time1
  • Algebra Pro — Lifetime$19.99

Questions

Is Casty free?
Casty is free to download, with no in-app purchases.
Is Algebra Handbook free?
Algebra Handbook is free to download, with in-app purchases available.
Do Casty or Algebra Handbook have ads?
Neither Casty nor Algebra Handbook shows ads.
Which is updated more often, Casty or Algebra Handbook?
Casty ships an update every 2 days, and Algebra Handbook every 3 weeks. Most recently, Casty was updated on October 18, 2026 and Algebra Handbook on October 24, 2026.

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