Find your rhythm with intermittent fasting, without the bloat.

If you’ve tried intermittent fasting apps before, you’ve probably noticed a pattern: what starts as a simple timer eventually becomes a calorie counter, meal logger, recipe database, AI coach, and social network all rolled into one. Somewhere along the way, the original purpose gets lost in feature creep.

FastTempo takes a different approach. We built the fasting timer we wanted to use ourselves: focused, beautiful, and honest about what it does.

What Is Intermittent Fasting (And Why Do People Try It)?

Intermittent fasting, also called time-restricted eating, isn’t about what you eat. It’s about when you eat.

People try it for different reasons, including creating a more predictable routine or reducing unplanned eating. Results vary by person and by schedule. A recent Cochrane review of intermittent fasting found that, for adults with overweight or obesity, intermittent fasting may have similar effects to traditional dietary advice. It is not a guarantee of a particular health outcome.

The practical takeaway is simple: choose a routine that fits your life, pay attention to how you feel, and adjust with professional guidance when needed. Regularity can make a habit easier to follow, but perfection is not the goal.

Why We Built FastTempo

We looked at the fasting app market and saw a clear gap. The major apps have evolved into sprawling wellness platforms with calorie counters, AI coaches, recipe databases, and social networks. Many users just want a timer that works.

FastTempo exists because we believe:

A fasting app should track fasting. That’s it. No calorie counting required. No meal logging. No AI chatbots.
Your Apple Watch should be a first-class citizen. Not an afterthought with basic functionality, but the primary way you interact with your fasts.
Streaks should reward consistency, not punish life. A rigid pass/fail system doesn’t reflect how habits actually work.

Core Features

The 24-Hour Timer

FastTempo’s main interface is a circular 24-hour visualisation showing your eating and fasting windows. At a glance, you can see:

Your current state (eating or fasting)
Time remaining in your current window
Your target start and end times
Whether you’re on track or have deviated from your schedule

The design is intentionally calm. Cool blues during fasting, warm greens during eating. No urgent alerts or panic-inducing notifications. Just clear information.

Apple Watch Integration

This is where FastTempo shines. The Watch app isn’t a stripped-down companion. It’s a fully capable interface for managing your fasts:

Complications that show your current state and time remaining right on your watch face
Slide-to-toggle controls for starting and ending your eating window
Works without your phone for those times you leave it behind
Haptic feedback so you know when your window opens or closes

Many popular fasting apps don’t have Watch apps at all. We built FastTempo Watch-first.

Flexible Streak Tracking

Traditional streak systems are binary: you either hit your exact window or you “failed.” But that’s not how habits work in real life.

FastTempo uses a tolerance window (±30 minutes by default). Started eating 15 minutes early because of a work lunch? Still counts. Finished 20 minutes late at a family dinner? Your streak survives.

This approach rewards consistency over time rather than punishing minor variations. Life happens. Your progress shouldn’t disappear because of it.

Slide Into Fasting

Jumping straight from eating breakfast at 8am to a noon eating window is hard. Most advice says “start with 12 hours and gradually increase,” then leaves you to figure out the details yourself.

FastTempo’s graduated onboarding does the maths for you. Tell us when you currently eat breakfast and when you’d like your eating window to start. We’ll automatically shift your schedule by 30 minutes every day or two until you reach your goal. No willpower decisions, no manual adjustments. Just a gentle transition over 7-10 days.

What FastTempo Doesn’t Do

We’re explicit about this because we think it matters:

No calorie tracking: If you want to count calories, there are excellent apps for that. We’re not one of them.
No meal logging: We don’t need to know what you ate. We just track when.
No recipe databases: Plenty of those exist already.
No AI coaching: We won’t pretend a chatbot knows your body better than you do.
No social features: Your fasting is your business.

FastTempo does one thing: it helps you maintain a consistent eating window. We aim to do that exceptionally well.

What Research Can and Cannot Tell You

Research on time-restricted eating is active and does not support one schedule for everyone. For example, a randomised clinical trial published in JAMA Internal Medicine compared time-restricted eating with a consistent meal schedule, while another JAMA Internal Medicine trial studied an 8-hour eating window. These studies are useful context, not a promise that the same result will apply to every reader.

FastTempo is built to help you test a manageable routine and notice how consistently it fits your day. The app does not tell you which schedule is medically right for you.

Find Your Rhythm

Intermittent fasting doesn’t have to be complicated. It doesn’t require counting anything. It doesn’t need an AI to tell you what to do.

It just needs consistency and a timer that helps you maintain it.

FastTempo. Find your rhythm.

FastTempo is available on the App Store for iPhone and Apple Watch.