Comparison

ZappID vs sci.calculator

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

Head to head
About

ZappID

Features
Read full description

Create your ZappID and send push notfictions fast and very easy by accessing a url or send a api-request.

About

sci.calculator

Features
Read full description

A stylish yet powerful scientific calculator. The app is designed with a single-screen layout for simple and intuitive operation. Calculation history is saved and can be reused easily. Results are shown in both mathematical notation and decimal format. 【Main Features】 • Basic arithmetic, modulo, trigonometric functions • Exponential, logarithmic, power and root calculations • Unit conversion and 47 scientific constants (CODEC2022) • Prime factorization, GCD and LCM • Binary, octal and hexadecimal calculations with logical operations • 8 memory slots • Permutations, combinations, and pseudo-random numbers • Systems of linear equations (up to 4 variables) • Polynomial equations (up to 4th degree) • Equation solving using Newton’s method • Time and angle calculations • External keyboard support 【Designed for Ease of Use】 • Unit conversion includes intuitive units such as “Tokyo Dome volume,” light-years, and cooking measurements. • Choose from 6 color themes to match your iPhone or iPad. • Quick switching between RAD/DEG and number bases on a single screen. • Supports iPad multitasking, allowing calculations alongside other apps. Clean, readable, and efficient. A scientific calculator that combines functionality with a modern design.

Screenshots

ZappID3 screens
sci.calculator3 screens

Verdict

The call

The clearest difference is in-app purchases: ZappID at none against sci.calculator's 1. ZappID also leads on update cadence (every 4 days vs every 5 weeks) and iOS requirement (12.0 vs 15.0). 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. sci.calculator sells 1 one-off in-app purchase. ZappID asks for nothing beyond the download.

UpkeepUpdate frequency

ZappID ships an update every 4 days, sci.calculator every 5 weeks. The most recent releases landed on September 15, 2026 and December 22, 2025 respectively.

Scorecard3 real differences · 3 level
ZappID versus sci.calculator: the parameters behind the verdict, then further details
ParameterZappIDsci.calculator
PriceFreeFree
Update frequencyEvery 4 days — betterEvery 5 weeks
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS12.0 — better15.0
Further details — not scored
Size11 MB49 MB
Age rating4+4+
DeveloperFredrik PeterssonYukihiro Shioya

In-app purchases

None

ZappID

No in-app purchases

1 purchases

sci.calculator

One-time1
  • remove Ads$1.99

Questions

Is ZappID free?
ZappID is free to download, with no in-app purchases.
Is sci.calculator free?
sci.calculator is free to download, with in-app purchases available.
Do ZappID or sci.calculator have ads?
Neither ZappID nor sci.calculator shows ads.
Which is updated more often, ZappID or sci.calculator?
ZappID ships an update every 4 days, and sci.calculator every 5 weeks. Most recently, ZappID was updated on September 15, 2026 and sci.calculator on December 22, 2025.

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