Topicbraid: MQTT Design
Map Topics, Wildcards, ACLs
$1.99 · Designed for iPad. Not verified for macOS.
An offline workbench for MQTT topic namespaces and access control: reason about topics, wildcards, and ACLs against a worked broker scenario on one dashboard.
Topicbraid is an offline workbench for reasoning about MQTT topic namespaces and access-control rules.
The app opens straight into a single dashboard built around a worked broker scenario. At the top, the Authorization probe lets you pick a principal, choose Subscribe or Publish, and type any topic — you get an instant Allow or Deny verdict computed with real MQTT semantics: deny rules take precedence over grants, QoS ceilings are enforced, retained publications require explicit permission, and $-prefixed system topics are never matched by a leading wildcard. Below it, the Observed namespace tree rolls up message counts and byte totals for every branch, the ACL scope chart plots the wildcard breadth of each rule (green for allow, red for deny), and the privilege findings ledger automatically flags risky grants.
FEATURES
- Live Allow/Deny probe with correct + and # wildcard matching
- Deny-precedence evaluation, QoS ceilings, retained-flag checks
- Indented topic tree with per-branch message and byte rollups
- Wildcard-breadth chart across the full rule set
- Automatic findings: unbounded # subtrees, retained QoS 2 write grants
PREMIUM BY DESIGN
One-time paid download. No account, no ads, no analytics, no tracking, and no network access — everything runs on your device, fully offline.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Version 1.1 is a focused redesign: Topicbraid now opens directly into a single fast MQTT ACL workbench. Probe any topic for an instant Allow or Deny verdict with real wildcard and deny-precedence semantics, scan the namespace tree with message and byte rollups, and review automatic privilege findings — all on one screen.
The developer, Robert Corbin, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Robert Corbin
- Size
- 2.5 MB
- Category
- Developer Tools
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Robert Corbin
