ROS Topic Viewer
ROS 2 Topic Inspector
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
ROS Topic Viewer is an iPad-only field debugging tool for robotics engineers.
Connect directly to your ROS robot over Wi-Fi using rosbridge_suite WebSocket - no laptop required. Browse all available topics, inspect live raw JSON data in a scrollable tree, and monitor message rate in real time.
TRY IT FREE, NO ACCOUNT NEEDED
Demo Mode runs a fully simulated robot inside the app - live odometry, laser scan, IMU, battery and tf topics - with no robot and no network required. It is free forever and never expires, so you can try every feature before deciding.
FEATURES
- Connect to any ROS 1 or ROS 2 robot via rosbridge WebSocket (ws://)
- Live connection log - see every step transparently: handshake, topic fetch, reconnect attempts, and failures
- Browse and search all published topics with message type annotations
- Inspect raw JSON data as a live expandable key-value tree
- Real-time Hz and message count per topic
- Pause to freeze data at a moment in time
- Export topic snapshot and share via AirDrop, Files, or email
- Auto-reconnect with exponential backoff when connection drops
FREE
- Demo Mode in full, unlimited
- Connecting to your own robot and browsing its complete topic list
ROS TOPIC VIEWER PRO (SUBSCRIPTION)
- Live topic data from your own real ROS 1 and ROS 2 robots
- Pro Monthly: $9.99/month
- Pro Yearly: $79.99/year (save 33%)
DESIGNED FOR FIELD ENGINEERS
Onsite robot debugging without a laptop. Connect your iPad to the same Wi-Fi network as your robot, enter the rosbridge WebSocket address, and start inspecting topics immediately. No configuration, no ROS installation required on the iPad.
Compatible with iPad running iPadOS 17 or later.
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Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or cancel your subscription in your App Store account settings after purchase.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://gist.github.com/hjatupon/a80d69f116db1ee82ca4d62dd3886728
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
ROS Topic Viewer is now a free download.
Demo Mode is free forever - a fully simulated robot with live topics, no hardware and no network needed. Connecting to your own robot and browsing its topic list is free too.
Viewing live data from your own real robot is now ROS Topic Viewer Pro, available monthly or yearly.
If you previously purchased ROS Topic Viewer, your full access is permanent and free - nothing to do. If it does not appear, tap the gear icon and choose Restore Purchases.
Also in this release: a new Settings screen with subscription status and Restore Purchases.
The developer, Jatupon Hongweing, 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
- Jatupon Hongweing
- Size
- 2.2 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.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Monthly $9.99
- Pro Yearly $79.99
- Copyright
- © 2026 Jatupon Hongweing. All rights reserved.