MQTTAnalyzer vs TrueNTP

Monitor and debug your MQTT broker from iPhone, iPad, or Mac. MQTTAnalyzer is the essential tool for smart home enthusiasts, IoT developers, and anyone working with MQTT-based systems. Free, open source, and no ads. CONNECT WITH CONFIDENCE • MQTT 3.1.1 and MQTT 5.0 support • MQTT and WebSocket connections • SSL/TLS with ALPN and server CA certificate validation • Username/password and client certificate authentication • Support for self-signed certificates • Predefined settings for AWS IoT • Connection diagnostics to identify issues quickly VISUALIZE YOUR DATA • Hierarchical topic tree view • JSON highlighting and pretty-printing • Time series charts for numeric values • ANSI color code rendering • Image viewer with pinch-to-zoom (PNG, JPEG, GIF, WebP, and more) • Hex viewer for binary payloads STAY ORGANIZED • Connect to multiple brokers simultaneously • Subscribe to multiple topics per broker • Full-text search across topics and messages • Unread message indicators • Statistics panel with message counts • Large payload support (10MB+) with export PUBLISH AND CONTROL • Publish messages with QoS and retain flag • JSON message builder with form interface • Delete retained messages from broker • Siri shortcuts for quick actions SYNC ACROSS DEVICES • iCloud sync for settings and certificates • Native experience on iPhone, iPad, and Mac Have feedback or feature requests? Visit our GitHub page — MQTTAnalyzer is open source and community-driven.

TrueNTP measures how far your phone's clock is from true time. It queries multiple independent time servers, cross-checks their answers, and computes a corrected time with millisecond precision. You see the corrected time, your device clock's drift, and an uncertainty figure so you know how much to trust the number. WHO IT'S FOR Network admins verifying NTP infrastructure. Cell techs checking tower timing. Sysadmins chasing certificate and Kerberos clock-skew errors. IT teams resyncing air-gapped and offline systems: hold the phone next to the console and set the clock from a known-good reference. And anyone curious what time it actually is. HOW IT MEASURES • Bursts of SNTP samples to every active server, weighted by network quality (1/RTT) • Per-server offset, round-trip time, and stratum at a glance • Optional outlier rejection against the cross-server median • Six curated presets (Apple, Cloudflare, NIST, Google, Microsoft, Amazon). Enable any of them or add your own • An uncertainty readout alongside every measurement WHAT YOU SEE • A large clock showing corrected time, ticking smoothly, unaffected by OS clock changes • Device clock card: your clock's drift, labeled plainly as DEVICE AHEAD, DEVICE BEHIND, or IN SYNC • Server list with per-server detail sheets: refid, root delay, root dispersion, per-sample scatter • 30-minute offset timeline showing your clock's behavior PRIVACY No accounts, no analytics, no tracking. Settings and history stay on your device. The privacy policy is one page. A short, plain-language NTP guide is included.