Comparison

Stroboscopic Effect vs Structural Formulas Study

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

Head to head
About

Stroboscopic Effect

Explore the fascinating stroboscopic effect by rotating various objects. Observe how objects can appear to stop or move backward at specific speeds. This app allows you to manipulate rotation direction and speed to witness these optical illusions.

Highlights
  • Rotate 4 different objects
  • Adjust rotation speed
  • Change rotation direction
  • Observe stroboscopic effect
  • Supports iPad, iPhone, and Retina display
Features
Read full description

Did you ever notice the wheels on the car driving next to you sometimes appear to be spinning backwards? This is referred to as the stroboscopic (or wagon-wheel) effect. It occurs when an object is rotated at certain speeds, making the object to appear to stop or even go backwards. Rotate 4 different objects in either direction (clockwise or counterclockwise). You can increase the speed until you see it appear to stop or reverse. On one of the objects, a wheel with different colored alternating rings, you can make it appear as if the rings of this single option are turning in opposite directions. Universal App - supports native iPad, iPhone and iPhone 4's Retina display. WARNING - Those with Epilepsy or those subject to seizures are usually cautioned to avoid strobe lights or similar effects.

About

Structural Formulas Study

Features
Read full description

Learn chemistry the easy way. Explore, search, and filter over 100 molecular structures with clear diagrams and essential data — perfect for exam prep or daily study. Features - 100+ molecules - Structural formulas with detailed properties (mass, density, pKa, etc.) - Quick search & category filters - Offline access – no internet required - Ideal for high school & college chemistry students Make chemistry study simple, efficient, and always at your fingertips!

Screenshots

Stroboscopic Effect4 screens
Structural Formulas Study4 screens

Verdict

The call

The clearest difference is update cadence: Structural Formulas Study at every 5 weeks against Stroboscopic Effect's every 84 months. Stroboscopic Effect's advantage is iOS requirement (8.0 vs 18.4). On price, ads, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Stroboscopic Effect ships an update every 84 months, Structural Formulas Study every 5 weeks. The most recent releases landed on September 19, 2026 and September 20, 2026 respectively.

Scorecard2 real differences · 8 level
Stroboscopic Effect versus Structural Formulas Study: the parameters behind the verdict, then further details
ParameterStroboscopic EffectStructural Formulas Study
PriceFreeFree
Rating2.7 (18 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings18 — better—
Update frequencyEvery 84 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS8.0 — better18.4
Further details — not scored
Size3 MB5 MB
Age rating4+4+
DeveloperMagnin & AssociatesJun Yamabe

In-app purchases

None

Stroboscopic Effect

No in-app purchases

None

Structural Formulas Study

No in-app purchases

Questions

Is Stroboscopic Effect free?
Stroboscopic Effect is free to download, with no in-app purchases.
Is Structural Formulas Study free?
Structural Formulas Study is free to download, with no in-app purchases.
Do Stroboscopic Effect or Structural Formulas Study have ads?
Neither Stroboscopic Effect nor Structural Formulas Study shows ads.
Which is updated more often, Stroboscopic Effect or Structural Formulas Study?
Stroboscopic Effect ships an update every 84 months, and Structural Formulas Study every 5 weeks. Most recently, Stroboscopic Effect was updated on September 19, 2026 and Structural Formulas Study on September 20, 2026.

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