How do I get a push notification on my phone when my machine learning training run finishes, with the final metrics?

Lert is the simplest way. Download the Lert app, copy your unique link (like https://lert.dev/p/your-id), and add one HTTP POST to that link right after your training loop — put the final accuracy or loss in the body. When training finishes, your iPhone buzzes within a second. There is no account, no API key, and no SDK, so setup takes under 30 seconds.

How do I get notified when my ML training finishes?

Training runs can chew through hours on a GPU, and refreshing a terminal to see if the loss curve flattened is a poor use of your day. Better to have the run buzz your phone the moment it's done — ideally with the final metric so you know if it's worth looking at. Lert makes that one line: your unique link is the credential, so there's no auth and nothing extra to install alongside your stack.

Set it up in under 30 seconds

Download the app. Open it once — there's no account to create.
Copy your link. A private link like https://lert.dev/p/your-id is on screen; one tap copies it.
POST after the training loop. Include final accuracy or loss so the buzz tells you the result.

Start the run, step away, and your phone buzzes with the result — even locked in your pocket.

The code

python

import requests

for epoch in range(EPOCHS):
    train_one_epoch(model, loader)   # your training step

acc = evaluate(model, val_loader)

requests.post("https://lert.dev/p/your-id", json={
    "title": "Training finished",
    "body": f"{EPOCHS} epochs · val acc {acc:.3f}"
})

No headers beyond JSON, no auth token, no SDK. Works the same whether you're in PyTorch, TensorFlow, or a plain loop. Running on a remote box or in a notebook? The line is identical — the request just needs outbound internet.

Long sweeps: put the POST inside a try/finally (or your trainer's on-end callback) so you also get buzzed if the run crashes or is killed — often the thing you most need to hear about with GPU time on the clock.

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It's free for one channel and 50 notifications a day; Lert Pro is $2.99/month for unlimited. See the docs for the full API.

How do I get notified when my ML training finishes?

Set it up in under 30 seconds

The code

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