Tell Me When Down vs Posy
Comprehensive feature analysis, ratings breakdown, platform compatibility, and community review comparison.

Tell Me When Down
Uptime monitoring & a free website security scan
Detailed Feature Comparison Matrix
Compare Other Tools| Dimension | Tell Me When Down | Posy |
|---|---|---|
| Primary Category | Web App | Web App |
| Community Rating | No ratings(0 reviews) | No ratings(0 reviews) |
| Community Upvotes | 6 votes | 10 votes |
| Supported Platforms | Web | Web |
| Tags & Focus | #Developer Tools#SaaS#Web App#YouTube | #Productivity#Web App#Lifestyle |
| Maker / Company | Independent Developer | Independent Developer |
| Platform Verification | Community Listing | Community Listing |
About Tell Me When Down
Tell Me When Down is an uptime monitoring and security scanning tool specifically designed for solo founders and developers building with AI agents. Rather than just checking if a URL responds, it monitors your application across three distinct operational depths to ensure both availability and safety.
The platform inspects your project through three layers:
- Public URL Scan: A free security scan evaluating your public domain for SSL issues, response headers, DNS configuration, and domain spoofing risks.
- GitHub Code Scan: A read-only GitHub App that analyzes your codebase to detect known vulnerabilities (CVEs) and leaked secrets.
- SDK Integration: Deep monitoring for critical backend components, including databases, Stripe webhooks, and background cron jobs.
With 60-second uptime checks and plain-English alerts, Tell Me When Down simplifies maintenance. Instead of requiring deep security expertise, every issue detected comes with a pre-formatted fix. Users can simply click "Copy for your AI tool" to feed the precise resolution directly into the AI coding agent used to build the application.
Pros of Tell Me When Down
- Monitors applications across three layers: public URL, code repository, and backend SDK
- Provides 60-second interval uptime checks with clear, plain-English alerts
- Includes a 'Copy for your AI tool' feature to effortlessly pass fixes to AI coding agents
- Offers a free public URL security scan for SSL, headers, DNS, and spoofing risks
Cons of Tell Me When Down
- Requires installing a GitHub App and integrating an SDK for deep code and backend monitoring
- Designed primarily for solo founders and simple workflows rather than large enterprise teams
Frequently Asked Questions
What is Tell Me When Down?
Tell Me When Down is an uptime monitoring and website security scanning tool built for solo founders. It monitors public URLs, code repositories, and backend services, providing plain-English alerts and ready-to-paste fixes.
What are the three depths of monitoring?
The tool scans public URLs (SSL, headers, DNS, and spoofing), connects via a read-only GitHub App to detect CVEs and leaked secrets in code, and uses an SDK to monitor databases, Stripe webhooks, and cron jobs.
How often are uptime checks performed?
Tell Me When Down performs uptime checks every 60 seconds.
How does the 'Copy for your AI tool' feature work?
Every security finding or issue comes with a prepared fix. Clicking 'Copy for your AI tool' copies formatted instructions that you can paste directly into the AI agent that helped build your app.
About Posy
Posy is a streamlined wedding planning web application designed to simplify wedding preparation starting from a single detail: your wedding date. By entering the event date, Posy automatically builds a customized month-by-month checklist of 125 tasks, intelligently scheduled around the exact amount of time you have left until your big day.
The platform focuses on frictionless productivity, requiring no account creation to get started. Couples can manage their progress by checking off tasks, printing physical copies of their checklists, or sharing planning duties directly with their partner. While the core timeline checklist is completely free forever, Posy also offers an optional one-time upgrade known as the full Kit for $29, which unlocks additional tools for managing budgets, guest lists, and seating arrangements.
Pros of Posy
- Completely free to use with no account creation required
- Generates a 125-task month-by-month checklist tailored to your specific timeline
- Includes sharing and printing capabilities to collaborate with your partner
- Offers a one-time payment of $29 for the full kit rather than an ongoing subscription
Cons of Posy
- Budget, guest list, and seating features require purchasing the paid kit
- Limited feature scope beyond checklist generation and the optional planning kit
- Relies entirely on the user's wedding date to structure initial planning milestones
Frequently Asked Questions
What is Posy?
Posy is a wedding planning web tool that creates a tailored, month-by-month checklist of 125 tasks based solely on your entered wedding date.
Do I need to create an account to use Posy?
No. Posy does not require an account to generate, manage, or print your wedding checklist.
Can I share my checklist with my partner?
Yes, Posy includes built-in options to share your checklist with your partner, check off tasks, and print the schedule.
How much does Posy cost?
Posy's timeline checklist is free forever. An optional upgrade called the full Kit—which includes budget, guest list, and seating tools—is available for a one-time fee of $29.
