ZappID vs sci.calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZappID
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Create your ZappID and send push notfictions fast and very easy by accessing a url or send a api-request.
sci.calculator
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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
Verdict
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
Both are free to download. sci.calculator sells 1 one-off in-app purchase. ZappID asks for nothing beyond the download.
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.
| Parameter | ZappID | sci.calculator |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 11 MB | 49 MB |
| Age rating | 4+ | 4+ |
| Developer | Fredrik Petersson | Yukihiro Shioya |
In-app purchases
ZappID
No in-app purchases
sci.calculator
- remove Ads$1.99








