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  2. STORE CARD
  3. CRUMB
CRUMB icon

CRUMB

Vital Group Limited

CRUMB offers an easy to use and interactive introduction to electronic circuits

★ 5.0 (1)Paid #77 KRLast observed chart rank per day over 14 days. Taller is better (#1 is tallest). Hollow bars mean no observation.2026-09-04 no data2026-09-05 no data2026-09-06 no data2026-09-07 no data2026-09-08 no data2026-09-09 no data2026-09-10 no data2026-09-11 no data2026-09-12 no data2026-09-13 no data2026-09-14 no data2026-09-15 no data2026-09-16 no data2026-09-17 #77best rank in the 14 days#77Last 14 days · paid chart rankhollow = no data

RANKS Paid KR #77

Screenshots and the icon are reduced copies of the developer’s assets; each opens the App Store page. Removal requests: hello@tesign.com.

AT A GLANCE

USAGE
￦12,000 · in-app purchases [unconfirmed] · iOS/iPadOS
GENRE
생산성 · 교육
CURRENT VERSION
1.0.3 ·
DEVELOPER
Vital Group Limited
APP STORE
View on the App Store ↗
CATEGORY
PRODUCTIVITY

A summary, not legal advice.

STORE DESCRIPTION

CRUMB offers an easy to use and interactive introduction to electronic circuits

Fully realised in 3D, you can construct prototype circuits as you would at the workbench without the risk of terminal component failure or the hassle of ordering individual components

CRUMB comes with a great selection of components to allow you to jump straight in to creating prototype circuits

With the catalogue available, it is possible to study the workings of transistors & audio filtering, all the way to programming an EEPROM to run a basic program

For the beginner, it is possible to learn and understand t…

The opening of the App Store description as stored, at most 600 characters. Written by the developer; formatting is not rendered.

RATING · RATING COUNT TREND

  1. ★ 5.01

The last observation of each day. A sudden jump in the count can be rating inflation — read it next to the rank change.

TIMELINE

  1. Released on the App Store
  2. Current version released
  3. First observed on a chart by TESIGN

AI chooses the lists under the owner’s delegation. No human review is running in September 2026. Total stars, increases, cross-source signals, last updates and licences are shown as evidence. How ranks work →

If this app gets editorial text (why, build, who, start, caveat) it becomes an edited entry. Until then the page shows only Apple’s public store information and our observed numbers.

App Store is a service mark of Apple Inc. Apple and the Apple logo are trademarks of Apple Inc. · Chart and rating source: Apple (top 100 free/paid per country, observed twice a day)