Comparison

Countdown Widget Customizer vs Scientific Calqon

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

Head to head
About

Countdown Widget Customizer

Easily track important upcoming events with customizable widgets for your home screen. Set up countdowns for weddings, birthdays, vacations, and more with a clean, elegant interface. Never miss a milestone with precise tracking of years, months, days, and even hours.

Highlights
  • Customizable home screen widgets
  • Multiple countdown styles
  • Track unlimited events
  • Precise countdowns (years, months, days, hours)
  • Simple, elegant interface
Features
Read full description

Countdown Widget makes your most important moments impossible to forget. Whether you’re counting down to your wedding, vacation, graduation, birthday, or any milestone, this beautifully designed widget keeps your date front and center right on your Home Screen! Features: • Stunning, clean, and minimal- customizable Home Screen widgets • Multiple countdown styles and layouts • Track unlimited events • Precise countdowns (years, months, days, hours, minutes) • Simple, elegant interface Make every moment leading up to your big day special.

About

Scientific Calqon

Features
Read full description

Scientific Calqon is a full scientific calculator, symbolic CAS, and graphing tool in one — built for students, engineers, and anyone who works with math. EXACT SYMBOLIC MATH (CAS) • Exact fractions and radicals: 1/3 + 1/6 → 1/2, √8 → 2√2 — no rounding errors • Symbolic derivatives (d/dx, d²/dx²) with full chain, product & quotient rules • Step-by-step derivative explanations • Symbolic integrals — by parts, substitution, partial fractions — plus definite integrals • solve: exact linear & quadratic roots, all complex roots of any polynomial • simplify, expand, factor, limits, Taylor series • Natural-language input: just type "derivative of x^2 sin x" SCIENTIFIC CALCULATOR • Full expression evaluation with correct precedence and implicit multiplication • Trig, inverse & hyperbolic functions; DEG / RAD / GRAD modes • Logs, roots, powers, factorials, nCr/nPr, mod, absolute value • Complex numbers: (2+3i)(1−i), √(−4), e^(iπ) = −1 • gcd, lcm, isprime, mean, median, variance, stddev and more • Memory keys, persistent history, live preview, Ans recall GRAPHING • Plot multiple functions y = f(x) on a fast, smooth canvas • Parametric x(t), y(t) and polar r(θ) modes • Pinch-zoom, pan, auto grid & labels — export as PNG or PDF MATRICES & LINEAR ALGEBRA • det, inverse, transpose, rref, rank, trace, powers, products • Solve Ax = b exactly — or detect "no solution" / "infinitely many" • Eigenvalues, eigenvectors, characteristic polynomial • Exact-fraction results throughout STATISTICS • Descriptive statistics, distributions, and regression UNITS & CONSTANTS • Converter across 11 categories: length, mass, temperature, time, speed, area, volume, energy, pressure, data, angle • 17 physical & mathematical constants — tap to copy DESIGN & PRIVACY • Gorgeous dark & light themes with subtle glassmorphism • Works fully offline — no account, no ads, no tracking FREE & PRO The scientific keypad, single-function graphing, matrices, and unit conversion are free forever. Calqon Pro unlocks the CAS with steps & natural language, statistics & distributions, multi-function graphs & export, and all themes — and everything is free to try for 7 days. Calqon Pro is an auto-renewing subscription ($2.99/month or $14.99/year). Payment is charged to your Apple ID. Cancel anytime in Settings. Terms of Use: https://www.pinclave.com/scientific-calqon/terms.html Privacy Policy: https://www.pinclave.com/scientific-calqon/privacy.html

Screenshots

Countdown Widget Customizer3 screens
Scientific Calqon4 screens

Verdict

The call

The clearest difference is in-app purchases: Countdown Widget Customizer at none against Scientific Calqon's 2. Scientific Calqon's advantage is iOS requirement (16.0 vs 26.0). On price, ads and device support 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. Scientific Calqon sells 2 in-app purchases, starting at $2.99 per month. Countdown Widget Customizer asks for nothing beyond the download.

Scorecard2 real differences · 8 level
Countdown Widget Customizer versus Scientific Calqon: the parameters behind the verdict, then further details
ParameterCountdown Widget CustomizerScientific Calqon
PriceFreeFree
Rating4.5 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 3 months—
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.016.0 — better
Further details — not scored
Size10 MB1 MB
Age rating4+4+
DeveloperBlake ShaffouNeuraPBX LLC

In-app purchases

None

Countdown Widget Customizer

No in-app purchases

2 purchases

Scientific Calqon

Subscriptions2
  • Calqon Pro Monthly$2.991 Month
  • Calqon Pro Yearly$14.991 Year

Questions

Is Countdown Widget Customizer free?
Countdown Widget Customizer is free to download, with no in-app purchases.
Is Scientific Calqon free?
Scientific Calqon is free to download, with in-app purchases available.
Do Countdown Widget Customizer or Scientific Calqon have ads?
Neither Countdown Widget Customizer nor Scientific Calqon shows ads.

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