Interval Timers Without a Subscription: What the Free Tiers Actually Take Away
You want a countdown that beeps when work ends and beeps when rest ends. That is a solved problem, and paying £5 a month forever for it feels absurd. So you search for a free timer, install the top three results, and discover that "free" means something different in each of them.
The catch is rarely on day one. A free tier is designed to feel complete for the first workout and to run out somewhere in the second week, once you have built a real routine. Knowing which limits bite, and when, is the whole buying decision.
The four ways a free tier runs out
Saved workout caps. The most common limit, and the sneakiest. Two or three saved workouts sounds like plenty until you have a Tabata session, a 40/20 circuit, a treadmill protocol and a warm-up. Then every new session means deleting an old one or rebuilding it by hand.
Watch and device access. Many timers run free on the phone and charge for the Apple Watch or Wear OS app. If the reason you want a timer is to leave the phone on the bench, this is the limit that matters most, and it is often buried in a feature list rather than the price.
Custom structure and cues. Free tiers usually allow a simple work/rest/rounds timer. Ladders, multiple blocks, named exercises, separate prep and cooldown phases, and per-phase sounds tend to sit behind the paywall. That is fine for straight Tabata and frustrating for anything with shape.
Ads at the wrong moment. Ad-supported timers are free in money and expensive in attention. An interstitial at the round change, or a banner that shifts the start button, costs you more than it saves the developer.
Subscription, one-off, or ad-supported
There are really three pricing models, and each suits a different person.
Ad-supported free suits someone running the same simple timer two or three times a week who never looks at the screen mid-set. If you do look, test the app through a full workout before trusting it, because ads rarely show up in the first sixty seconds.
Monthly subscription makes sense if you are trying a structured programme for a couple of months and want everything unlocked without committing. Most offer a free trial; set a calendar reminder the day before it converts.
One-off purchase is the right answer for most people who train intervals for more than a season. A timer is a utility you will use for years, and the maths is simple: if the one-time price is less than a year of the subscription, and you expect to still be training next year, paying once wins.
How to check before you install
The App Store and Google Play listings both show an "In-App Purchases" section. Open it before installing. A list with only monthly and yearly prices tells you there is no way to pay once. A "Lifetime" or "Unlock" entry tells you there is.
Then read the screenshots for words like "Pro", "Premium" or a small lock icon. Developers almost always show the paid features in the screenshots, which makes the screenshots a reliable map of what the free tier does not include.
Finally, build your real week in the first session — every workout you actually do — rather than the one quick timer the onboarding suggests. If a cap exists, you will hit it in five minutes instead of discovering it on a Thursday morning with your shoes already on.
Where Peak Interval sits
Peak Interval is free to download, and it offers both a monthly subscription with a free trial and a one-time purchase, so you can choose the model that fits rather than being pushed into a recurring charge.
Run the same checks on it that you would on any other timer. The features worth testing are the ones that matter once training has shape: saved workouts built from multiple phases, prep and rest blocks, distinct audio and haptic cues per phase, and the Apple Watch flow that lets the phone stay in your bag.
The short version
Free timers are genuinely fine for one simple protocol. The moment you want several saved sessions, a Watch, or custom phases, you are going to pay something — so look for an app that lets you pay once, check the In-App Purchases list before installing, and build your full week on day one to find the cap early.