KnowledgeBase Builder Lite app icon

KnowledgeBase Builder Lite

Try every feature: 3D mind maps, notes & kanban. One knowledge base.

InfoRapid · de.inforapid.knowledgebasebuilder.free.android

Not rated yet 100K+ downloads v8.3.4 14.2 MB Android 5.0+ PEGI 3 · Everyone

  • Signature matches the Google Play version Details

At a glance

Latest version
v8.3.4 (136)
Updated
Oct 4, 2026 (5 days ago)
APK size
14.2 MB
Requires
Android 5.0+ (API 21)
CPU support
Any (no native code)
Category
Productivity (app)
Listed since
Mar 14, 2021 (at least)
Permissions
2
Website
buildyourmap.com
Developer contact
[email protected]
Privacy
Developer's privacy policy

About this APK

KnowledgeBase Builder Lite is an app by InfoRapid in the Productivity category, listed since at least March 2021. It has no native code, so it runs on any Android processor.

Since version 7.9.18, the APK shrank from 19 MB to 14.2 MB and the minimum Android version rose from 4.4 to 5.0. It asks for 2 permissions, none of them sensitive. It asks for the same permissions as version 8.3.1.

What's new in v8.3.4

• New: Comprehensive Timeline Feature – Introduced an interactive timeline including frontend and backend integration, zoom, resize grip, and localized date formats. • New: Advanced Import Options – Added support for structured Markdown and JSON imports. Wikipedia and Wikidata imports now support image attachments and user data mapping. • UI Update: Enhanced Onboarding and Help – Introduced a new intro dialog, completely revised introductory tours, and expanded the help assistant.

Description

From the listing uploaded by “appupdater”.

The infinite mind map: millions of connected ideas Conventional mind mapping apps hit their limits at 50 to 100 nodes and force you into a rigid tree structure. The InfoRapid KnowledgeBase Builder is a true knowledge network for personal knowledge management and your digital “second brain”: any node can be linked to any other and every relationship carries its own label. ★ What the Lite edition does Lite includes every feature of the full version – no time limit, no ads. The only difference: you work with exactly one knowledge base. It holds millions of items; only the full version manages several database files side by side. ★ Spectacular 3D view Experience your knowledge in space: the interactive 3D view arranges your network in a planetarium layout. Fly from node to node with animated camera moves, or let presentation mode carry you through a guided tour. ★ Whiteboard, mind map & kanban in one app Start out free-form in whiteboard mode: ideas, notes and tasks float loosely on an infinite canvas. Later on, arrange them as a classic mind map – or as a kanban and scrum board for projects and tasks. ★ Every kind of diagram, tidied up automatically Connect nodes by drag and drop, then label and weight every relationship. One click sorts the whole network radially, symmetrically, hierarchically or as a table. That is how mind maps, concept maps, flowcharts, org charts, family trees and even mathematical formulas (LaTeX) come together. ★ Notes, rich text & attachments Every node holds far more than a title: formatted notes, tables, checklists and cross-references. Attach PDFs, Word and Excel files, images or web links directly – with previews. ★ Full-text search that reaches into your documents The lightning-fast search covers not only the titles of your nodes, but the text content of every attached document. ★ Wikipedia, Wikidata & Obsidian import Search Wikipedia or Wikidata straight from the app and import entire articles along with their semantic relations as a finished mind map. From your own text, the analysis extracts keywords for brainstorming. Obsidian vaults can be imported too. ★ AI support for automatic diagrams Let modern AI models expand your diagrams, summarize text or insert entire structures – thanks to full support for the Model Context Protocol (MCP). ★ Categories, tags & live filters Group nodes by color and topic, and instantly hide the branches you do not need right now. ★ Open formats Export and import your knowledge network or sub-branches as JSON, XML, CSV, text document, image or 3D model. Also included: Flashcard trainer: the app automatically generates flashcards and cloze tests from your mind maps for studying at school and university (spaced repetition). Flowcharts from pseudocode: write simple logic text and the app draws the flowchart. History that lasts: up to 200 undo steps – even after restarting the app. Your data stays local: your knowledge base is stored as a fast SQLite file (.kdb) on your device instead of in someone else's cloud. No account, no forced cloud, no tracking. You only need the internet for the optional Wikipedia/Wikidata import and for AI support. On all your devices: share your .kdb file through the cloud storage of your choice with the editions for Windows, iOS, macOS and the browser. Made for trying it out: no time limit, no ads, no subscription. To keep several knowledge bases side by side, move up to the full version “InfoRapid KnowledgeBase Builder” – your .kdb file comes with you. More information and sample databases: https://inforapid.org/

Version history

6 versions are listed, going back to v7.9.18. New versions arrive here about every 2 weeks. Since v7.12.1 it requires Android 5.0+.

All 6 versions

Security & authenticity

Security rating: Trusted

Signing certificate

  • Signature matches the Google Play version Checked by the source store on Oct 4, 2026.
  • Certificate issued to “InfoRapid (Ingo Straub Softwareentwicklung)” This is the certificate of the Google Play version.
  • Same certificate as the 5 other versions checked

Store checks and file details

  • Developer signature verified Oct 4, 2026
  • Validated against Google Play Oct 4, 2026
  • Signed byCN=Ingo Straub, OU=Software Development, O=InfoRapid (Ingo Straub Softwareentwicklung), L=Waiblingen, ST=Baden-Wuerttemberg, C=DE
  • Signing certificate (SHA-1)76:34:74:B6:FE:EC:B7:3A:59:77:4A:3D:AA:99:FB:E7:B3:B8:4C:1F
  • File MD5b79da7794958f6531f7d2670cac91950
  • Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (5 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (2)

KnowledgeBase Builder Lite requests 2 permissions, none of them sensitive.

KnowledgeBase Builder Lite APK: questions and answers

Is there a version of KnowledgeBase Builder Lite for older Android phones?

The current version needs Android 5.0 or later. Version 7.9.18 is the newest listed build that installs on Android 4.4 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 7.9.18 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the KnowledgeBase Builder Lite APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 5 other versions checked. After downloading, check that the file's MD5 is b79da7794958f6531f7d2670cac91950.

Tags

More Productivity apps