Short answer: Little Snitch is a firewall. It shows which apps on your Mac connect to which servers and lets you allow or block each connection. PeakHour is an internet connection monitor. It measures your connection’s bandwidth, latency, packet loss and outages, including traffic from every device on your router. If you want to block connections, keep Little Snitch. If you want to know why your internet is slow or dropping, PeakHour is the tool for that. Many people run both.
At a glance
| PeakHour 6 | Little Snitch 6 | |
|---|---|---|
| Main job | Monitoring internet connection quality and bandwidth | Per-app outbound firewall and connection monitoring |
| Block or allow app connections | No | Yes: connection alerts, rules, blocklists, profiles |
| Traffic per app / per server | No | Yes: grouped by app, domain or country, with a world map |
| Bandwidth for the whole network (router via SNMP/UPnP) | Yes | Not listed (it covers only this Mac’s traffic) |
| Latency, jitter and packet loss over time | Yes | Not listed |
| Network path / traceroute to your ISP | Yes | Not listed |
| Outage alerts when the connection drops and comes back | Yes | Not listed |
| Speed / responsiveness test (RPM) | Yes | Not listed |
| Wi-Fi signal and channel | Yes | Not listed (Wi-Fi is used only to switch profiles) |
| Data usage caps with alerts | Yes: notification and email triggers | Not listed |
| Traffic history | Long-term bandwidth and latency charts | Up to 12 months |
| Encrypted DNS (DoH/DoT/DoQ) | No | Yes |
| Mac App Store | Yes | No (Little Snitch Mini is on the App Store) |
| Price | 7-day free trial, then $19.99/year or $59.99 lifetime | $59 single, $115 family, $239 for 5 Macs; perpetual license, paid major upgrades |
| Trial | 7-day free trial in the app | Demo mode, 3-hour sessions with no limit on restarts; Network Monitor for 30 days |
| macOS | 14.6 Sonoma or later | macOS 14 Sonoma or later (older versions on a legacy page) |
Prices are USD, checked September 2026. Little Snitch prices come from obdev.at. PeakHour prices are on the Mac App Store.
Where Little Snitch is better
Be straight about this: if your question is “what is this app connecting to, and can I stop it?”, Little Snitch is the right tool and PeakHour isn’t a replacement.
- Per-app control. Little Snitch alerts you when an app tries to connect and lets you allow or deny it, with rules tied to the app’s code signature.
- Privacy filtering. It has curated blocklists with daily updates, profiles that switch automatically on a new Wi-Fi network, and encrypted DNS.
- Per-app traffic. Its Network Monitor shows data volumes by app, domain or country, with up to 12 months of history.
Where PeakHour is better
PeakHour answers a different question: “Is my internet connection working properly, and if not, where is it failing?”
- The whole network, not just this Mac. PeakHour reads bandwidth straight from your router (SNMP or UPnP), so you can see traffic from the TV, the kids’ iPads and the work laptop as well as your Mac.
- Connection quality over time. It tracks latency, jitter and packet loss all the time and keeps the history, so you can see what “the internet was bad last night” actually looked like.
- Where the problem is. Hop-by-hop path monitoring shows whether a slowdown is on your Wi-Fi, your router or your ISP.
- Outage alerts. You get notified when the connection drops and again when it comes back.
- Data caps. Monthly usage tracking with notification or email alerts before you hit your ISP’s limit.
- Speed and responsiveness tests that use Apple’s network quality (RPM) measurement.
- Wi-Fi details: live signal strength and channel.
More on how it works: real-time bandwidth monitoring with PeakHour.
Using both
They don’t overlap much. Little Snitch controls what leaves your Mac. PeakHour watches the connection everything travels over. Running both is common and they don’t conflict.
Which should you choose?
- Choose Little Snitch if you want to see and block app connections, filter trackers, or audit what a new app does.
- Choose PeakHour if you want to monitor bandwidth across your whole network, track latency and packet loss, get outage alerts, or stay under a data cap.
- Just want a cheap per-app traffic view? Little Snitch Mini is on the Mac App Store. Monitoring is free, and blocking and longer history are $1.49/month or $13.49/year.
Weighing more options? See the 5 best bandwidth monitoring tools for Mac in 2026.
Sources
Checked September 25, 2026.
- Little Snitch features, trial, demo mode and 12-month history: obdev.at/products/littlesnitch
- Little Snitch pricing: obdev.at order page
- Perpetual license and paid major upgrades: obdev.at comparison page
- macOS compatibility: obdev.at download page
- Little Snitch Mini pricing: Mac App Store
- PeakHour pricing and requirements: Mac App Store
Little Snitch upgrade prices are only shown after you enter a license key, so this page leaves them out.
FAQ
Is PeakHour a firewall?
No. PeakHour monitors and doesn't block connections. To block app traffic, use Little Snitch (or the firewall built into macOS for incoming connections).
Can Little Snitch monitor bandwidth?
Yes, for the Mac it runs on. It shows data volumes per app, domain or country. It doesn't list router-level or whole-network bandwidth, latency, packet loss or outage monitoring.
Is there a Little Snitch alternative on the Mac App Store?
Little Snitch Mini, from the same developer, is on the App Store for per-app traffic monitoring. PeakHour is on the App Store for connection quality and whole-network bandwidth.
How much does Little Snitch cost compared with PeakHour?
Little Snitch is $59 for a single perpetual license, with paid upgrades for new major versions. PeakHour is $19.99 a year or $59.99 for a lifetime license, and there's a 7-day free trial.