CRUMB

Honestly a really cool circuit designer, the only thing i can complain about is the speed. It drains my battery lightning fast, even when its minimized and it makes my phone feel like a stove. Really cool app, just hope you make some optimizations, please.

EE Tech student here- very cool and very useful for learning about and analyzing circuits but desperately needs a function generator/AC source. I would love to see perfboard as a base design option.

Not bad overall but could use alot more components... only had a 1 digit 7 seg screen and I need a 4 digit. Barely has enough to parts to build my first super simple project..

neat!! the interface can be a little tricky at times, like changing the voltage on the power supply, but overall this is already really fun!!

Early days, but this is a really good looking simulator, and it's a nice touch to see both analogue and digital circuits supported. Keep up the good work!

It's a wonderful concept, very much needed indeed for initial electronics education. I hope it improves and includes more elementary components like op amps and mosfets.

Generally good concept. Definitely needs more update. What only sucks is that its been so long and there's no new content and I feel like I was scammed. This could have been a great app.

Guess the days of having a physical test bench is finally coming to an end. This is the likley future. haven't had this much fun putting circuits together in a long time.

This is a great simulator the worst thing about it is that is still early in development and lacks a lot of sturr. Other that that I have spent many hours in this.

A great app for anyone looking to get into this stuff. Great camera controls, great descriptions of the parts, and lots of fun to mess around with

Where are the op amps, voltage references, comparators, meters, ESR, ESL, diode varieties, relays, crystals/RTCs, and basically anything that isn't in a 4 bit calculator? And how about a graph readout? Maybe add a frequency domain to the simulation for greater utility?

Cool app, one little suggestion moving around the simulation would be more intuitive if there was a button like on blender software (top right corner) with small dots on the axis label you know with simple tap or swipe to rotate much faster.

This app is great for learning circuit building, especially if you don't want to fry your parts. Would love to see more added like RGB LEDs but really it's pretty perfect already.

Making your own circuit is very intuitive. The only thing I would like added is the ability to find total resistance so that I can check it with my calculations, but other than that, I have no complaints

This is a great app for those interested in tinkering with electronic components, studying & learning electronics. The visual 3D breadboard and components can be zoomed in, rolled around & interactively manipulated for experimenting and trying out circuits. The 1.0 version on android comes with enough components to get you going. The developer will be releasing regular updates, improvements & new components. He is also highly involved in the user forum, chatting with users. Great Stuff indeed!

Phenomenal app! Once I was able to figure out the controls the app became really easy to use and I was able to whip up some simple circuits with ease. Highly recommend if this is something you are interested in well worth the money.

This app is absolutely amazing. It is one of the best 3d breadboard designers on the play store. However since I had to pay 7 dollars which I know isn't much but on the play store it is a good amount. I would love to see being able to customize legs on push button. Also to see a couple more parts like a photresistor. The only reason why I didn't give this a 5 star rating is due to how my debouncer circuit was not working. I did it in real life and it worked. Once fixed I will give this app a 5.

I was prompted to leave a review within I'd guess 10 minutes of first use, pretty obstructively I might add, but I have to say my initial reaction is pretty good. it's definitely pioneering as SPICE goes with the GUI being 3D, but the controls will take some getting used to. Looking forward to more components and hopefully some circuit tutorials someday.

I'm having way too much fun playing with this. I wasn't too sure about buying an app but I saw the demo video and decided to give it a go. I'm setting up my first circuit now, just an RLC circuit to watch its step response. everything is very easy to navigate through and it feels very natural even on my phone to jump around from different types of functionality. it feels very solid and well put together.

I love this app, I bought it on steam but I ended up wanting to also to study on the go, sadly, this version is stuck on time, there are way more bugs than on the steam version and the last update was on 2022. It is missing features, you can't turn transistors, it is missimg the AC power supply. There is also a strange drama about the version 2.0 that is maybe going to be another app, but this isn't clear yet. I hope this version gets an update, it really needs.

No included manual either Please would you be able to visit the Forum at crumbsim.com and let me me know what isn’t working so that I can improve?

I discovered this app just as I was beginning to learn about electronics, and I’ve learned so much in the past week of using it! The examples have taught me a ton and I’ve learned way more from experimenting with this than I ever did with a real breadboard. There are tools to let you see what the voltage and current are doing and warn you when you make a mistake that would fry something. I’ve given five stars because I think the value I’ve gained far outweighs the cost I paid, but I do hope you keep improving it. The touch controls and UI can be a little flaky at times, and I would love to have more components, like MOSFETs, transformers, relays, AC power supply, and a little music player for learning how to build an amplifier. I’d also like to have many more examples of classic circuits to experiment with. Thanks for building this. It’s fantastic.

The app works very well. Just a bit tedious to make a circuit all on a phone/iPad. Future PC integration would be awesome

I can learn to design circuits on my phone?? Amazing thank you!