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Learn

An app that teaches itself.

You don't need to walk in knowing what LUFS means or why PPM has a fast attack. flexMeter ships 37 in-app help articles, five contextual tips that surface at exactly the moment they're useful, a six-step onboarding tour, and a diagnostic that explains what it's checking — so the app stops feeling mysterious about ten minutes in.

We didn't write a manual. We wrote a library.

Bundled with every tier No internet required Plain-language explainers Reset shown tips any time

The library

37 articles. Three shelves.

Organized so you can find what you need by what you're trying to do — not by which feature ships it. The whole library lives in the Help menu and ⌘? from anywhere in the app.

Why behind the readings

Concepts

12 articles

Plain-language explainers for the ideas the app is built on. Read these once and the rest of the app stops feeling mysterious.

  • What is true peak (and why 4× oversampling matters)
  • Reading the LUFS triptych: M, S, and I
  • VU vs PPM: when each one is right
  • What does −14 LUFS actually mean for YouTube
  • The color ladder — green, yellow, red
  • Why a peripheral meter beats a window
  • Tally light: what red, green, and amber signal
  • Quiet zone, and why broadcasters love it
Get something done

How-tos

14 articles

Step-by-step recipes for the most common things you'll want to wire up. Stream Deck, OBS, Logic, Discord — there's a guide for each.

  • Set up a Stream Deck button for the tally
  • Pair the iPhone Companion in 30 seconds
  • Meter your output mix with System Audio Output
  • Route through BlackHole (the manual way)
  • Wire OBS to flexMeter via WebSocket
  • Trigger flexMeter from a Shortcut or Siri
  • Send tally events to Slack via webhooks
  • Configure Dead Air alerting for your show type
  • Share your settings between two Macs
  • Label channels on a multi-input interface
Every setting, every command

Reference

11 articles

When you want the exact answer. Every settings pane, every keyboard shortcut, every URL scheme parameter, every WebSocket command, every OSC address.

  • Settings reference — General
  • Settings reference — Audio
  • Settings reference — Appearance
  • Settings reference — Modules
  • Settings reference — Shortcuts
  • Settings reference — Advanced
  • Keyboard shortcuts — all ten, default bindings
  • flex:// URL scheme — every host and parameter
  • WebSocket API — every command and response
  • OSC address space — every endpoint
  • AppleScript dictionary — every term
Contextual tips

The app speaks up — exactly five times.

TipKit tips are the opposite of a tutorial overlay. They wait. When you do the thing that needs explaining, the explanation shows up. The rest of the time, the UI stays quiet.

  1. 01

    "First Over Recorded"

    Fires: Fires on the Overs readout the first time you clip a session

    Points you to Air Log so you have the receipt next time it happens.

  2. 02

    "Loopback Detected"

    Fires: Appears under the source picker when BlackHole or Loopback is installed

    Suggests you're probably here to meter your output, and shows the route.

  3. 03

    "LUFS Target Not Set"

    Fires: Surfaces under the target picker when you're on the factory default

    Suggests picking the platform you publish to so the target line means something.

  4. 04

    "Multi-Monitor"

    Fires: Pops over the Display picker when two or more screens are connected

    Reminds you that flexMeter can pin to a specific display, not just any display.

  5. 05

    "Workflow Preset Suggested"

    Fires: Banner when OBS, Zoom, Logic, Pro Tools, or Reaper takes focus

    Offers the matching preset and remembers your answer per app.

Tips remember whether you've seen them. If you want to start fresh — handing the Mac to a friend, or just because — Settings → Advanced → Danger Zone → Reset Shown Tips.

The first ninety seconds

A guided tour that points at the actual meter.

On first launch the desktop dims to about 62% black and a cyan-outlined hole cuts around the real meter strip — so the tour talks about the actual thing on your screen, not a mockup. Right-arrow advances; Escape skips. Reopen anytime from Show Tips.

  1. 01

    Welcome

    You're looking at the meter strip. Everything you need is one right-click away.

  2. 02

    Reading the strip

    Green, yellow, red. Peak hold lingers for 1.5 seconds. Triple-click for quiet zone.

  3. 03

    Snap to an edge

    ⌘⇧← / → / ↑ / ↓ to reposition. Or press and drag the strip; it snaps to the nearest edge.

  4. 04

    Quick settings

    Right-click the strip for input device, mode, position, peak hold, opacity, and more.

  5. 05

    Staying out of the way

    Click-through is one shortcut away: ⌘⇧L. ⌘⇧M toggles visibility. ⌘⇧F finds the strip.

  6. 06

    What's next

    Tally, Text Strip, Air Log, iPhone Companion — the rest waits in Settings until you want it.

The diagnostic that teaches

Standards Sweep doesn't just say PASS — it tells you what PASS means.

Four checks against the live engine. Each result comes with a plain-language explanation so you finish the sweep knowing more about your chain than when you started. Useful before a critical recording. Useful for answering a podcast network that asks if you're EBU R128 compliant. (Pro tier.)

  • PASS
    K-weighting filter
    Confirms the BS.1770-4 biquad coefficients match the reference values at the device's sample rate.
  • PASS
    Sample rate
    Passes on AES/EBU standard rates (44.1, 48, 88.2, 96, 176.4, 192 kHz). Warns on anything non-standard.
  • PASS
    True peak ≥ RMS
    Sanity check — true peak should always be ≥ RMS for any real signal. If it isn't, the chain is misconfigured.
  • PASS
    LUFS integration gate
    Verifies the −70 LUFS absolute gate is active and the integrated value is reading.

See the full Pro surface →

Even the status messages teach you

"Standing by." "Holding for signal." "No source."

The vocabulary in the status indicators (and the VoiceOver announcements) is borrowed from broadcast control rooms — the kind of language a working engineer would use on the talkback. You absorb a little of the trade just by reading the app's own UI.

Standing by
No signal yet — engine ready, waiting for audio.
Holding for signal
Device connected but no level above noise floor.
No source
No input device available — usually a permissions or hardware state.
Roll new take
The "reset" label shown when a creative preset (Streaming, Podcast, Classic VU) is active.
Reset measurements
The "reset" label shown when a broadcast or monitoring preset is active.

Bundled with every tier. Free included.

The entire learning library — 37 articles, five tips, the onboarding tour, the console vocabulary, the in-app glossary — ships with the free download. The Standards Sweep is the only learning surface gated behind Pro, because it's a diagnostic, not a reading list.