Timer presets that never disappear: saving interval workouts

There is a one-star review that shows up in interval timer apps in batches, and it is not about timing. The beeps are fine. The intervals run true. The complaint is shorter than a sentence: “Erased my timers overnight.” All of them. Someone opened the app to run a session they have run a hundred times, and the list was empty.

If you train to your own intervals, that is the scary review. A saved workout is a small thing on the screen: a name, some rounds, a work number, a rest number. The part that took weeks to get right is inside the numbers. Your tabata at 20/10 with the rest you actually recover in, not the one on the poster. Rounds of 3:00 with a 0:30 rest and a bell at the end. The mixed circuit where swings get 40 seconds and stretches get 15. When an update wipes the list, the tuning goes with it, and the tuning was the workout.

So it is worth being blunt about what saving should mean before you hand a timer three months of your evenings.

What saving should mean

Named presets. Save your 20/10, your 40/20, your 3-minute rounds, each under its own name. Names you picked: “Garage 40/20”, “Bag work”, “Desk break”. Setup stops being a project and becomes one tap on a list you can read. A timer that stores your work as “Timer 1” and “Timer 2” has saved the data and thrown away the meaning.

Autosave on every change. A save button you can forget is a save button you will forget. You change a rest from 20 seconds to 15 at six in the morning, half awake, and the change should be saved the moment you make it, not the next time you remember to press something. The overnight erasure hurts most when it eats edits that were never committed anywhere. If every change saves itself, a bad update or a crashed phone can only take what was on the screen, not what you built over a season.

Storage that is not a login. “A timer is the last thing on earth that should need a login.” That line came from a user, verbatim, in a thread about exactly this. Presets that live on your device are yours whether the company’s backend is having a bad week or having second thoughts about free users. An account can meter, hold, or lose your data. Local storage with a copy you control beats a login you were forced into.

A file you own. Export the whole set as a file, JSON being the usual format, and keep it somewhere boring. Import it on the next phone and the library moves in two minutes. No account in the middle, no sync to wait for, nothing to negotiate when a device dies.

The circuit saved whole. The save that matters most in this category is the mixed one: different work and rest per exercise, a name on each interval, an order you decided on. “Can I set different times per exercise mid-circuit?” is a live question wherever interval training gets discussed, and the honest test of a preset system is whether a loaded circuit still has per-exercise times a week later. A save that flattens your circuit into one global work/rest kept the file and lost the workout.

A two-minute audit of the timer you use now

Before you trust an app with weeks of tuning:

• Make a small preset. Edit it. Close the app completely, reopen it. If the edit is gone, you know what kind of timer this is.
• Save a circuit with different times per exercise, reload it, and count what survived.
• Look for export. If your workouts can leave the app only through an account, or a subscription, or not at all, they are rented, not saved.
• Until the audit passes, screenshots of the settings screens are a legitimate backup. Clunky, but yours.

Set up once, then stop setting up

The entire point of a timer for repeated sessions is that you build the structure once and then stop building it. The first setup takes half a minute; every setup after that should take one tap, because the voice cues and the beeps handle the running and the list handles the remembering.

Tune your intervals, save each workout by its own name, and go train. Tomorrow morning the list is still there, and the session starts with a tap.