Comparison

A vs Deflection

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

Head to head
About

A

Analyze 2D truss problems quickly on your mobile device. Create standard or custom truss structures, manage material properties, and generate PDF reports with flexible unit options.

Highlights
  • Standard truss templates (18 types)
  • Custom truss creation
  • Flexible unit system
  • Built-in material library
  • PDF reporting and email export
Read full description

The easy and fastest way to analyze the 2D-Truss problem right on your iPhone & iPod Touch. Featuring: • Standard Truss Templates: with the standard truss template (18 types of truss for initial version) , you can easily create and config your truss as required. • "Custom Truss"; If the built-in standard truss template doesn't match your requirement, "Custom" your own Truss is also easy to create due to the Node & Element generating features. • Unit Flexibility: very flexible in Units system, you can choose any units at your convenience without the requirement to restart the application and the unit system is saved per your truss's project. For example you use m. as node coordinations while you choose mm. for the deflection of the nodes or you can even choose in. or ft. for nodes's deflection (if you really need). • Buit-in material sections library where you can adjust any material's properties with no effect to other truss project. The options to create your own material library will be available for the next update. • PDF Reporting: All result information of your truss are shown in PDF and also you can email this result.

About

Deflection

Calculate structural behavior for beams, 2D trusses, and 2D frames. Visualize reaction forces, shear, bending moment, and deflection. Analyze internal stresses along the beam and cross-section.

Highlights
  • Beam, 2D truss, and 2D frame analysis
  • Graphical output of results
  • Internal shear and bending stress calculation
  • 2D frame and truss editor
  • Cross-section editor with automatic calculations
  • Built-in database and quick-start templates
Features
Read full description

Deflection is a powerful, versatile calculator for beams, 2D trusses, and 2D frames. The interface is simple and intuitive, and the graphical output is state-of-the-art. In addition to reaction, shear, bending moment, and deflection results, Deflection also computes internal shear and bending stress along the cross section and along the beam. 2D FRAME AND TRUSS EDITOR The 2D editor is seamlessly integrated with the beam editor. Draw arbitrary frame and truss structures and apply loads and constraints using the same simple interface as for beams. You can visualize results directly within the 2D editor, or you can select a beam and get additional insights. INTERNAL STRESSES Obtain internal bending and shear stress diagrams in addition to shear, bending, and deflection diagrams. The internal stresses can be visualized along the length of the beam as well as along the vertical axis of the cross section using the beam editor. CROSS SECTION EDITOR Edit built-in cross sections. Moment of inertia and area values are automatically calculated and applied to the rest of the beam calculations. MORE FEATURES • The built-in database contains more data for your reference and convenience. • Apply beam self-weight optionally • Unlimited design files • Quick-start templates CONTACT We like to hear from you! Please email contact@ketchep.com if you have any issues, questions, or comments.

Screenshots

A4 screens
Deflection4 screens

Verdict

The call

The clearest difference is review sentiment: Deflection at 74% against A's 26%. Deflection also leads on rating (4.6 vs 2.3) and ratings volume (115 vs 3). A's advantage is chart position (#192 vs unranked). On price, update cadence, ads and in-app purchases 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

A costs $4.99 and Deflection $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Deflection holds the better App Store score, 4.6 against 2.3. That said, the two scores are not equally well evidenced: Deflection has 115 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 26% of A's written reviews are positive against 74% of Deflection's.

UpkeepUpdate frequency

A ships an update every 5 weeks, Deflection every 6 weeks. The most recent releases landed on October 26, 2026 and November 1, 2026 respectively.

Scorecard5 real differences · 6 level
A versus Deflection: the parameters behind the verdict, then further details
ParameterADeflection
Price$4.99$4.99
Rating2.3 (3 ratings)4.6 (115 ratings) — better
Positive reviews26.5% of reviews73.6% of reviews — better
Number of ratings3115 — better
Update frequencyEvery 5 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#192 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size10 MB160 MB
Age rating4+4+
DeveloperJutarus RatanasethakulBlue Ketchep

Customer experience

A

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews34 reviews
Positive26.5%
Neutral2.9%
Negative70.6%

Deflection

All ratings115 ratings
Positive90.4%
Neutral4.3%
Negative5.2%
Written reviews91 reviews
Positive73.6%
Neutral8.8%
Negative17.6%

In-app purchases

None

A

No in-app purchases

None

Deflection

No in-app purchases

Questions

Is A free?
A costs $4.99, with no in-app purchases.
Is Deflection free?
Deflection costs $4.99, with no in-app purchases.
Which has better reviews, A or Deflection?
Deflection is rated higher. A averages 2.3 out of 5 from 3 ratings, while Deflection averages 4.6 from 115 ratings.
Do A or Deflection have ads?
Neither A nor Deflection shows ads.
Which is updated more often, A or Deflection?
A ships an update every 5 weeks, and Deflection every 6 weeks. Most recently, A was updated on October 26, 2026 and Deflection on November 1, 2026.

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