Comparison

Orbit Storybook vs EngKit

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

Head to head
About

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.

About

EngKit

Features
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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 โ€ข Resistor Code โ€” decode resistance from color bands, convert between SI units โ€ข Ohm's Law โ€” calculate voltage, current and resistance interactively โ€ข LED Resistor Calculator โ€” find the right series resistor for any LED and supply voltage โ€ข Voltage Divider โ€” design resistor voltage dividers for any target output โ€ข Resistor Network โ€” equivalent resistance for series and parallel circuits โ€ข Matrix Calculator โ€” add and multiply matrices up to 10ร—10 โ€ข Graphing Calculator โ€” plot and explore math functions with pan and zoom โ€ข Unit Converter โ€” convert between 14 categories: length, mass, temperature and more PRO MODULES (one-time unlock) โ€ข Complex Numbers โ€” add, subtract, multiply and divide in rectangular or polar form โ€ข Capacitor Code โ€” decode capacitance from EIA 3-digit codes and tolerance letters โ€ข Equation Solver โ€” solve linear, quadratic and 2ร—2 systems of equations โ€ข Triangle Solver โ€” solve triangles and trig functions with exact values โ€ข Root Finder โ€” bisection, false position, Newton-Raphson and secant โ€ข Projectile Motion โ€ข Boolean Algebra No subscriptions. No ads. Pay once for Pro and keep every current and future module.

Screenshots

Orbit Storybook1 screens
EngKit4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. EngKit sells 1 one-off in-app purchase. Orbit Storybook asks for nothing beyond the download.

UpkeepUpdate frequency

Orbit Storybook ships an update every 4 months, EngKit fortnightly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

Scorecard3 real differences ยท 3 level
Orbit Storybook versus EngKit: the parameters behind the verdict, then further details
ParameterOrbit StorybookEngKit
PriceFreeFree
Update frequencyEvery 4 monthsFortnightly โ€” better
AdsNoNo
In-app purchasesNo โ€” betterYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS13.0 โ€” better26.1
Further details โ€” not scored
Size24 MB5 MB
Age rating+44+
DeveloperKiwi.com s.r.oRodrigo Vivas

In-app purchases

None

Orbit Storybook

No in-app purchases

1 purchases

EngKit

One-time1
  • Pro Unlock$6.99

Questions

Is Orbit Storybook free?
Orbit Storybook is free to download, with no in-app purchases.
Is EngKit free?
EngKit is free to download, with in-app purchases available.
Do Orbit Storybook or EngKit have ads?
Neither Orbit Storybook nor EngKit shows ads.
Which is updated more often, Orbit Storybook or EngKit?
Orbit Storybook ships an update every 4 months, and EngKit fortnightly. Most recently, Orbit Storybook was updated on October 30, 2026 and EngKit on October 31, 2026.

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