Comparison

TopOpt vs DTU Events

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

Head to head
About

TopOpt

Explore structural engineering concepts with an interactive topology optimization tool. Design and visualize optimized structures in real-time by placing loads and supports. Supports advanced features like volume and stress constraints for detailed analysis.

Highlights
  • Real-time structure updates
  • Minimum compliance optimization
  • Compliant mechanisms design
  • Local volume and stress constraints
  • Robust formulation for design insensitivity
  • STL export for 3D printing
  • Interactive load and support placement
Features
Read full description

TopOpt is an interactive topology optimization app from the TopOpt group at the Technical University of Denmark (DTU). Place loads and supports, and the optimized structure appears and updates in real time while you edit. Two problem types: • Minimum compliance: the stiffest structure for a given amount of material • Compliant mechanisms: a force inverter and a gripper, with input and output ports and their springs Both can be extended with: • A local volume constraint for bone-like porous infill • A von Mises stress constraint, with the stress field shown on the design • The robust formulation, which makes the design insensitive to its members being made thinner or thicker Further features: • Presets: MBB beam, L-bracket, cantilever and femur, and force inverter and gripper for mechanisms • Up to six loads and three load cases, and scaled loads • Loads, supports and ports are moved by dragging their symbols, and loads and ports can be rotated • Passive solid and void regions, and flexible void regions that the optimization may move • Custom grid size, sharpness and filter radius • Export of the design as an STL file for 3D printing The same app runs on iPhone, iPad, macOS, Windows and Linux. A user guide with tutorials is available on the TopOpt homepage.

About

DTU Events

Features
Read full description

Download DTU's own Event app, and you always have all af DTU's events at your fingertips. In the app you will find your registration, as well as other relevant information about the events you are registered for.

Screenshots

TopOpt4 screens
DTU Events3 screens

Verdict

The call

The clearest difference is update cadence: TopOpt at every 4 months against DTU Events's every 19 months. 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

TopOpt ships an update every 4 months, DTU Events every 19 months. The most recent releases landed on November 1, 2026 and November 11, 2026 respectively.

Scorecard1 real difference · 9 level
TopOpt versus DTU Events: the parameters behind the verdict, then further details
ParameterTopOptDTU Events
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews66.7% of reviews—
Number of ratings2 — better—
Update frequencyEvery 4 months — betterEvery 19 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size51 MB43 MB
Age rating4+4+
DeveloperDTU Mechanical EngineeringInfo-Connect A/S

In-app purchases

None

TopOpt

No in-app purchases

None

DTU Events

No in-app purchases

Questions

Is TopOpt free?
TopOpt is free to download, with no in-app purchases.
Is DTU Events free?
DTU Events is free to download, with no in-app purchases.
Do TopOpt or DTU Events have ads?
Neither TopOpt nor DTU Events shows ads.
Which is updated more often, TopOpt or DTU Events?
TopOpt ships an update every 4 months, and DTU Events every 19 months. Most recently, TopOpt was updated on November 1, 2026 and DTU Events on November 11, 2026.

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