Report updated Apr 8, 2026
Weights & Biases
v26.3Machine learning engineers, data scientists, and AI researchers who need to monitor long-running training jobs and experiments while away from their workstations.
What Is Weights & Biases?
Launched Feb 2, 2024
Updated Apr 2026
What users think iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
What does it look like?
What are the key features?
Monitor machine learning training runs and experiments live from a mobile device.
Receive alerts when training runs finish, fail, or when key metrics change.
Zoom and pan through training curves and performance metrics.
Track loss, accuracy, throughput, and custom metrics across projects.
Connects securely to existing W&B projects without needing to rebuild dashboards.
What do users think? iIndependent intel reports to help builders create better apps or enhance existing ones. Still in beta, accuracy and relevancy get better every day. For informational purposes only.
“Recent user voice shows a frustrated sentiment. Users appreciate core utility, but report display/rendering issues and privacy concerns.”
What Users Love
I use this all the time for to view my loss and metric plots realtime.
Pain Points
When clicked on a running project, it shows a blank page.
This app just shows a blank page. I can't see the figures, graphs, and the others.
going this accessibility setting route does not help me. I'm not gonna give you guys access to my screens and whatnot.
Medium confidence · 28 reviews available
How is it ranked?
| Chart | Rank | Change |
|---|---|---|
| Free | #99 | ▼8 |
What are the pros and cons?
Pros
- Seamless integration with W&B ecosystem
- Real-time visualization capabilities
- Strong brand presence in AI research
- Effective push notification system
Cons
- Critical rendering bugs (blank/gray screens)
- High-friction accessibility permission requirements
- Significant version lag on Android
- Limited feature set compared to web dashboard
What is the market outlook?
Growth Opportunities
- Exploit competitor instability in mobile monitoring
- Expand into model serving and production monitoring
- Implement mobile-native widgets for quick status checks
- Improve Android parity to capture broader developer market
Market Threats
- Direct competition from Comet ML's mobile app
- Established observability players (Datadog) moving into MLOps
- User reliance on Slack/Discord for notifications due to app instability
- Declining category rankings indicating loss of momentum
Who competes with Weights & Biases?
The Nemesis
Datadog
★4.3 (290)Datadog, Inc.
Enterprise-grade observability platform used to monitor production ML models and infrastructure performance.
Enterprise-grade observability platform used to monitor production ML models and infrastructure performance.
Contenders
PagerDuty
★4.8 (5K)PagerDuty Inc.
The industry standard for real-time alerting when long-running training jobs or production models fail.
The industry standard for real-time alerting when long-running training jobs or production models fail.
Peers
Essential for tracking code changes, pull requests, and GitHub Actions related to ML model development.
GitHub Copilot Integration
The go-to SSH client for ML engineers to remotely manage GPU servers and check training logs via CLI.
Encrypted Cloud Vault
The primary hub for receiving automated experiment notifications and discussing results with research teams.
Slack AI
Widely used by AI research communities and open-source projects for real-time collaboration and bot-driven alerts.
Voice & Video Channels
What are the key takeaways?
Weights & Biases is a frustrating developer tools app that is free with in-app purchases. With a 3.4/5 rating from 28 reviews, it frustrates many users from users. Users particularly appreciate core utility, though display/rendering issues remains a common concern.
Best for: Machine learning engineers, data scientists, and AI researchers who need to monitor long-running training jobs and experiments while away from their workstations.
How much does it cost?
Model: freemium
The mobile app acts as a utility extension for the core W&B platform, likely driving retention and engagement for existing professional users rather than serving as a standalone revenue product.
iOS Version
26.3
Android Version
1.0.4
Release Date
Feb 2, 2024
iOS Price
Free
Android Price
Free
Developer
Weights and Biases