Intermittent Fasting
Simple vs Orbit: Coaching or Just a Timer?
Simple pairs intermittent fasting with an AI coach and nutrition guidance. Orbit is a fasting timer with stage cues and nothing else. Which approach suits how you actually fast?
Photo by Gilles Lambert on Unsplash
Simple and Orbit represent the two ends of what a fasting app can be. Simple wants to guide you — logging, feedback, an AI coach that responds to what you tell it. Orbit wants to get out of the way. Neither is the better app in the abstract; they're built for different people.
Key takeaways
- Simple is a guided nutrition and fasting programme with an AI coach, food logging and personalised feedback.
- Orbit is a fasting timer with live stage cues — no logging, no coaching, no feed.
- Simple asks for input to give you output. Orbit asks for almost nothing.
- Choose by effort tolerance: if logging meals sounds useful, Simple. If it sounds like homework, Orbit.
Feature comparison at a glance
| Feature | Simple | Orbit |
|---|---|---|
| Primary focus | Guided nutrition + fasting | Fasting timing and consistency |
| Fasting timer | Yes | Yes (precise, distraction-free) |
| Stage cues | Yes | Yes (live physiological milestones) |
| Food logging | Yes — central to the product | No (intentionally omitted) |
| AI coaching | Yes | No |
| Personalised feedback | Yes, based on what you log | No |
| Notifications | Frequent, coaching-led | Gentle start/end cues |
| Platform | iOS and Android | iOS only |
Features and pricing change often — check the current App Store listing for both before deciding.
The case for Simple
Simple's premise is that a timer alone doesn't tell you whether what you're doing is working. So it collects information — what you ate, how you felt — and gives you feedback on it, with an AI coach as the interface.
That's genuinely valuable for a specific person: someone who doesn't yet know whether their eating is the problem, and who wants something more responsive than a static article. If you've been fasting for two months without results, an app that can look at your intake is more useful than one that can only confirm you fasted. (The likely explanations, for what it's worth, are in Why Am I Not Losing Weight With Intermittent Fasting?)
The catch is that coaching only works if you feed it. An AI coach with three days of sparse logs isn't giving you personalised guidance; it's guessing. Simple's value is directly proportional to how much you put in.
Best for: people who want to be told what to do next, and who will actually log. Not for you if: you already know what you're doing, or you know you won't keep logging past week two.
The case for Orbit
Orbit is ours, so discount accordingly — but the opposite case is straightforward.
Once you know your protocol, the daily question isn't what should I do. It's how long have I been fasting, and what's happening right now. That's a glanceable question, asked many times a day, and an app built around it should answer in under a second and then leave.
Orbit is a precise timer, live cues as your body moves through glycogen depletion into ketosis and autophagy, gentle start and end reminders, and streaks. There is no food logging and no calorie framing at all — which matters to more people than the category tends to acknowledge. Plenty of people fast for clarity, routine, or simply because they prefer eating twice a day, and for them a calorie-first interface is answering a question they didn't ask.
Best for: people who know their protocol and want a quiet, accurate timer. Not for you if: you want guidance, nutrition tracking, or you're on Android.
Where each one falls short
Simple's weakness is input cost. Logging is a habit in its own right, and a harder one than fasting. If it lapses, the coaching degrades to generic advice and you're paying for a timer with extra steps.
Orbit's weakness is that it assumes competence. It won't tell you your window is too aggressive or that you're under-eating protein. It measures; it doesn't advise. And it's iOS only.
How to choose
- "I don't know if what I'm eating is working." → Simple.
- "I know what I'm doing, I just need the clock." → Orbit.
- "I want to avoid calorie framing entirely." → Orbit.
- "I'll definitely log my meals." → Simple. (Be honest here.)
- "I'm on Android." → Simple.
For the wider field, see The Best Intermittent Fasting Apps in 2026, or Fastic vs Orbit if motivation rather than guidance is what you're missing.
As with any switch: fasting apps generally can't import each other's history, so screenshot a streak you care about before moving.
Disclaimer
Disclaimer: This article is for general information and is not medical advice. App features and pricing change frequently — check each App Store listing for current details. Intermittent fasting is not suitable for everyone; consult a qualified healthcare professional before starting a fasting regimen.
Frequently asked questions
Does Orbit have an AI coach?
No. Orbit is a timer with stage cues and no coaching layer. If you want guidance, Simple is built for that.
Is Simple worth it if I don't log my food?
Much less so. The personalisation depends on what you give it — without logging, you're largely paying for a fasting timer.
Which is better for someone who just wants 16:8?
Orbit, for most people — 16:8 is simple enough that guidance adds little. Intermittent Fasting for Beginners covers everything you need to start.
Is Orbit on Android?
Not currently. Simple runs on both iOS and Android.
Do either app tell me what to eat?
Simple does. Orbit deliberately doesn't — it tracks the fast and leaves food decisions to you.
