Digital Circuit Simulator Litev4.5

Released November 28, 2019Major

iOS

The latest major update introduced new logic components and expanded libraries, yet the average rating declined from 2.64 to 2.33 stars. The release failed to address core friction points regarding wire placement and restrictive free-tier item limits. The overall impact remains neutral due to the limited sample size and lack of improvement in primary usability barriers.

What changed

New featureAdded Tri-State Buffer and Tri-State NOT Gate with pull-up and pull-down options
New featureAdded Buzzer and LEDs with independent serial functionality
New featureAdded Hex Digit Display to replace BCD
New featureAdded optional Clock input for the J-K Flip-Flop
New featureAdded optional Clear input for D and T Flip-Flops
ContentExpanded the collection of Example libraries
UXReorganized menus and implemented UI tweaks
UXUpdated the App Icon and App Info
PlatformEnsured compatibility with iOS 13
PerformanceFixed various bugs

Reception

45/ 100 impact scoreNeutral

What worked

New feature
The addition of logic gate components and expanded example libraries provides a rewarding educational experience for users.

What didn't

UX
no evidence
Menu reorganization and UI tweaks failed to address persistent user frustration regarding unresponsive wire connection controls.
New feature
no evidence
New hardware components do not mitigate the primary barrier to entry where strict item limits in the free version prevent complex circuit construction.

Marlvel takeaways

Address the high-frequency complaint regarding wire connection hit boxes to reduce friction in the core simulation loop.
Re-evaluate the free tier item limits, as current restrictions remain the primary barrier to user satisfaction and retention.
Prioritize usability testing for connection controls, as current UI tweaks have not resolved persistent navigation and placement issues.

Original release notes

- Added Tri-State Buffer with pull-up & pull-down.
- Added Tri-State NOT Gate with pull-up & pull-down.
- Added Buzzer with independent serial.
- Added independent serial for LEDs.
- Added Hex Digit Display (it was BCD).
- Added optional Clock input for the J-K Flip-Flop.
- Added optional Clear input for both the D and T Flip-Flops.
- Added more Example libraries.
- More Organized menus.
- Some UI Tweaks.
- Updated App Icon.
- Updated App Info.
- iOS 13 Compatibility.
- Some fixed bugs.