Orbit Storybook vs EngKit
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Orbit Storybook
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The app lets you browse Orbit foundation and components. Orbit is an open-source design system created for specific needs of Kiwi.com and together with that โ for needs of travel projects.
EngKit
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EngKit is a focused toolkit of engineering and math calculators, built for students, hobbyists and professionals who want fast, accurate tools without clutter. FREE MODULES โข Resistor Code โ decode resistance from color bands, convert between SI units โข Ohm's Law โ calculate voltage, current and resistance interactively โข LED Resistor Calculator โ find the right series resistor for any LED and supply voltage โข Voltage Divider โ design resistor voltage dividers for any target output โข Resistor Network โ equivalent resistance for series and parallel circuits โข Matrix Calculator โ add and multiply matrices up to 10ร10 โข Graphing Calculator โ plot and explore math functions with pan and zoom โข Unit Converter โ convert between 14 categories: length, mass, temperature and more PRO MODULES (one-time unlock) โข Complex Numbers โ add, subtract, multiply and divide in rectangular or polar form โข Capacitor Code โ decode capacitance from EIA 3-digit codes and tolerance letters โข Equation Solver โ solve linear, quadratic and 2ร2 systems of equations โข Triangle Solver โ solve triangles and trig functions with exact values โข Root Finder โ bisection, false position, Newton-Raphson and secant โข Projectile Motion โข Boolean Algebra No subscriptions. No ads. Pay once for Pro and keep every current and future module.
Screenshots
Verdict
The clearest difference is in-app purchases: Orbit Storybook at none against EngKit's 1. Orbit Storybook also leads on iOS requirement (13.0 vs 26.1). EngKit's advantage is update cadence (fortnightly vs every 4 months). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. EngKit sells 1 one-off in-app purchase. Orbit Storybook asks for nothing beyond the download.
Orbit Storybook ships an update every 4 months, EngKit fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Orbit Storybook | EngKit |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 4 months | Fortnightly โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPad |
| Requires iOS | 13.0 โ better | 26.1 |
| Further details โ not scored | ||
| Size | 24 MB | 5 MB |
| Age rating | +4 | 4+ |
| Developer | Kiwi.com s.r.o | Rodrigo Vivas |
In-app purchases
Orbit Storybook
No in-app purchases
EngKit
- Pro Unlock$6.99









