Comparison

How {Things} Work vs SJ Academy

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

Head to head
About

How {Things} Work

Features
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Ever wondered how a microwave actually heats your dinner? How Wi-Fi gets through walls? How an MRI sees inside you without cutting you open? How {things} Work is a field guide to the machinery of modern life - short, plainspoken explainers about the everyday objects, systems, and ideas that quietly run the world. Every topic has three reading depths. - The short version - a paragraph that answers the question. - Go Deeper - a more technical pass, already prepared. - The Full Picture - edge cases, context, and broader connections. What's inside the first release: - Around 200 topics across 30 categories - from home appliances and transport, to your senses, the weather, money, materials, AI, and more - A quick quiz at the end of each topic, so the details stay - Bookmarks for the ones you want to come back to - Source links at the foot of every topic Built to read calmly. No accounts. No ads. No tracking. Works fully offline once installed. Read on the train, in bed, or in the kitchen while something's in the oven. For the curious - and for anyone who keeps getting asked "how does that actually work?"

About

SJ Academy

Features
Read full description

SJ Academy LMS provides employees and authorized users with access to learning and development resources anytime, anywhere. With the app, users can: โ€ข Access assigned learning content โ€ข Complete courses and learning plans โ€ข Track learning progress โ€ข Receive notifications โ€ข Learn on mobile devices โ€ข Sign in securely using organizational credentials A valid SJ Group account is required to access the application.

Screenshots

How {Things} Work4 screens
SJ Academy4 screens

Verdict

The call

How {Things} Work and SJ Academy are too close to call on the numbers: across 5 compared parameters โ€” price, ads, in-app purchases and device support among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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. Neither carries in-app purchases, so what you see is what you pay.

ScorecardNo meaningful differences
How {Things} Work versus SJ Academy: the parameters behind the verdict, then further details
ParameterHow {Things} WorkSJ Academy
PriceFreeFree
Update frequencyโ€”Fortnightly
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS15.1 โ€” better15.5
Further details โ€” not scored
Size41 MB62 MB
Age rating4+4+
Developerccburns.meRyan Tan

In-app purchases

None

How {Things} Work

No in-app purchases

None

SJ Academy

No in-app purchases

Questions

Is How {Things} Work free?
How {Things} Work is free to download, with no in-app purchases.
Is SJ Academy free?
SJ Academy is free to download, with no in-app purchases.
Do How {Things} Work or SJ Academy have ads?
Neither How {Things} Work nor SJ Academy shows ads.

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