CRUMB

Vital Group Limited · iOS

CRUMB

Explore the ad evidence, study the storefront, and build your next acquisition hypothesis.

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01 / Creative research

Turn the unknowns into a research plan.

01

Check the acquisition promise

Read the store headline, screenshots and description. What problem is the app promising to solve?

Study the storefront
02

Look for ad evidence

Explore apps with direct store-link matches. Compare their hooks and formats without assuming the same approach works here.

Browse observed advertisers
03

Separate demand from paid growth

Store rankings and revenue estimates describe market context. They do not establish ad spend, conversions or ROAS.

Review the market context

02 / Storefront & product

Where the click lands.

Study the product story and store experience behind the acquisition funnel.

Screenshots

CRUMB screenshot 1CRUMB screenshot 2CRUMB screenshot 3CRUMB screenshot 4CRUMB screenshot 5CRUMB screenshot 6CRUMB screenshot 7

03 / Market context

The business behind the app.

Keep revenue, downloads and store rankings separate from advertising performance.

How Much Does CRUMB Make?

Monthly Revenue
$1.0K
Annualized estimate
$12.0K
Per Download
$1.00

Platform Performance

🍎iOS
Revenue
$1.0K
Downloads
1.0K
Rating
4.4 (139)

Rating Distribution

4.4
★★★★
139 reviews
5
7%
4
4%
3
3%
2
13%
1
73%

Top Countries

🇺🇸 US🇲🇽 MX🇵🇦 PA
Reviews (3)
★★★★★Nova prospekt 21/13/2025
Fantastic simulator despite a few quirks

I’ve been using this simulator to follow the Ben Eater 8 bit computer series and I absolutely love this app. There’s a few quirks that you may run into but the fixes are rather straightforward at least for the iPad version. I’ve experienced some crashing on Mac which has been frustrating but overall, I’m in love!

☆☆☆☆szaydel10/5/2023
Good idea, very poor execution

I think the idea is very good, but implementation is bad. Making it 3d feels unnecessary and actually makes it difficult to place parts. Once on the breadboard, moving them seems impossible. I am repositioning everything but the part I want to move. Ultimately I spent 30 minutes placing like three pieces and eventually gave up. I understand this is an ambitious project, and using the unity engine imposes various constraints. That’s all understandable, but I think this app at least currently is a poor choice for rapid prototyping. I have no idea what other reviewers are doing, but working with basic electronic components and wires to connect things is just difficult and slow. I want a rapid prototyping app and this just isn’t it. It is a shame too, because it seems quite capable.

★★★★★Apple User9/3/2022
I’m learning a lot!

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.

Version History (3)
1.0.38/29/2022
1.0.18/17/2022
1.08/16/2022
Available In (115 Countries)
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Supported Languages (1)
English
App Details

CRUMB offers an easy to use and interactive introduction to electronic circuits Fully realised in 3D, you can construct prototype circuits as you wou...

iOS App ID
1639868071
Content Rating
4+
Min OS
13.0
Size
496.1 MB
Publisher
Vital Group Limited