u/Artl13

Hi all,

I'm building RoboTrace (robotrace.dev): log training runs as episodes (video + sensors + actions), tag them with policy/env/git metadata, replay in a portal, and spot regressions before you ship to hardware.

ROS 2 today:

Offline rosbag2 (sqlite3 + mcap), no full ROS install needed for bags
Auto-classifies topics into video / sensors / actions
Optional live record via rclpy

Install:

pip install 'robotrace-dev[ros2,video]'
robotrace login

Try a bag:

from robotrace.adapters import ros2
print(ros2.scan_bag("./my_bag/").report())
ros2.upload_bag(
    "./my_bag/",
    name="my-run",
    policy_version="v1.0",
    env_version="lab",
    git_sha="abc1234",
)

SDK on GitHub: https://github.com/Artl13/robotrace-dev
Docs: https://robotrace.dev/docs/sdk/ros2

Looking for:

A few people using ROS 2 (student, hobbyist, solo dev, or lab) to try this on real bags or live topics and tell me what's broken, confusing, or missing.

Free access in exchange for honest bug feedback. Early alpha, APIs still moving. ROS 1 is out of scope.

Interested? Comment or DM me and I'll send an invite.
Questions? Ask here, I'm around.

Thanks in advanced

Hi everyone,
I’m looking for advice on the best and most reliable place to sell a mobile app business.

The app is a real product, not a template. It includes:
Native iOS app built with SwiftUI
Native Android app built with Kotlin
Node.js backend
Custom CMS/admin system
Landing page website
Subscription / in-app purchase monetization
App Store / Google Play presence
Multi-language support

I’m trying to understand where serious buyers usually look for this type of asset.

I know about platforms like Flippa, Acquire.com, and escrow-based private deals, but I’d like to hear from people who have actually bought or sold apps before.

Main questions:
Which marketplace is most reliable for selling a mobile app?
Is Flippa good for this, or are there better alternatives?
Is Acquire.com better for app/SaaS-style businesses?
How do you avoid scammers or unserious buyers?
What should I prepare before listing the app?
Is it better to sell through a broker, marketplace, or private buyer?

I’m especially interested in advice from people who have sold iOS/Android apps, subscription apps, or small digital businesses.

ROS 2 folks: free pilot of our episode logging SDK (help us squash bugs)