**Bytetally: Network Monitor**

Hi [r/macapps](https://www.reddit.com/r/macapps/), I'm the developer. I also wrote ITraffic, the open-source Mac traffic monitor. Bytetally is what came out of the things I could never fix in that old codebase.

**Problem**

macOS is happy to tell you your Mac moved 40 GB this week. It will never tell you that 31 of them went to one app you forgot was running.

The tools that do watch your network are firewalls. They answer "should this connection be allowed", once, then forget about it. And allow or deny is a blunt instrument: when an app is eating your tether you usually do not want it to fail, you want it to be slow. A backup that finishes overnight at 200 KB/s is fine. A backup that errors out is a new problem. Almost nothing on macOS can throttle a single app, so everyone ends up quitting apps by hand.

There is also a blind spot nobody handles. If you run ClashX, Surge or Quantumult X in TUN mode, every monitor I tried collapses into one line saying your proxy used 40 GB, and your real apps vanish. Bytetally traces the inner flow back to the app that actually made it and labels which proxy carried it. That took the longest to get right. (The latest version is currently under review by Apple, and it fundamentally fixes statistical issues in some edge cases)

See where it goes:

\- Per-app upload and download, separately, live and cumulative, with the live rate in the menu bar

\- Which websites each app talked to, and which apps talked to a given website. Proxied traffic still resolves to the real website

\- Any time range, an hour by day heatmap, and CSV or JSON export

\- Honest totals: LAN transfers, AirDrop and iPhone Mirroring are listed separately instead of counted as internet, and proxy traffic is never double counted

Do something about it:

\- Throttle a single app, up and down, smoothly. This is the feature I use most

\- Cut an app off, or give it its own data quota

\- Block or throttle one website without stopping the whole app, so you can silence telemetry.example.com and leave the rest of example.com working

\- A rule centre showing how many times each rule fired in the last 24 hours and which app kept retrying, so you can tell a working rule from one that is fighting something

Stay under your limit:

\- Monthly, weekly or daily caps, plus a separate budget per Wi-Fi network, so your hotspot and your home connection do not share one number

\- Alerts at 80 percent, 100 percent, or your own threshold, and an alert when an app's upload suddenly spikes

\- Overage auto-response: when a cap is hit, disconnect or throttle on its own while you are away

\- A built-in process encyclopedia, because "is it safe to cut off geod" is a question no other tool answers. System processes keep their real names with the explanation next to them

Everything runs on your Mac. No account, nothing uploaded, fully sandboxed. The app's only outbound request is purchase receipt validation.

**Comparison**

Little Snitch and LuLu are firewalls, and good ones. They decide whether a connection happens. They will not tell you Photos quietly used 9 GB last Tuesday, and they cannot slow an app down, only stop it. If you want an approval prompt for every new connection, use them instead. Bytetally deliberately has no popup.

TripMode is the closest in spirit, the app for "I am on a hotspot, shut these apps up". Bytetally covers that with per-network budgets and per-app rules, and adds history, the per-website breakdown, per-app quotas and throttling.

iStat Menus and Activity Monitor give you throughput, not attribution. Good graphs, no answer to which app.

**Pricing**

Core monitoring is free, permanently: per-app upload and download, the live menu bar rate, the 7 day trend and the proxy attribution. I think everyone should just have that part.

Pro is $1.99/month, $9.99/year, or $19.99 once for lifetime. Subscriptions include a 7 day free trial, and the lifetime purchase works with Family Sharing.

That $19.99 is early bird pricing. The app is young and I priced it for the people willing to try it early. It goes up as the feature set grows, and whoever buys lifetime now keeps everything that comes later at the price they paid.

For r/macapps: use code BYTETALLYSTUDENT20OFFV2 at checkout for 20% off the Lifetime purchase. Redeem it in the Mac App Store under your account menu, or in the app's purchase screen.

Mac App Store: [https://apps.apple.com/app/id6785049699](https://apps.apple.com/app/id6785049699)

Website: [https://bytetally.app/](https://bytetally.app/)

Support: [support@bytetally.app](mailto:support@bytetally.app)

Happy to answer anything, and I would rather hear what breaks than what looks nice. If the attribution gets your proxy setup wrong, tell me which proxy and which mode, that is exactly the report I need.

Bytetally: find the app eating your bandwidth, then throttle it or cut it off (works through VPNs and proxies)