AumaïAumaï vs Fastic: AI Coach or Fasting Timer?
Fastic has 20 million users and a polished fasting timer. Aumaï has a conversational AI coach that remembers everything. Here's which nutrition app actually fits your life in 2026.
Aumaï vs Fastic: AI coach or fasting timer?
Fastic launched around 2020 as a slick intermittent fasting timer and quietly grew into one of the most downloaded nutrition apps in the world. Twenty million users. A 4.8/5 rating on Google Play. A "Fasty" AI chatbot. A recipe library, a gamified challenge system, and a body-status tracker that tells you when you've hit ketosis.
It's genuinely impressive. And if intermittent fasting is the core of your health routine, Fastic does it well.
But there's a gap between a fasting timer app and an AI nutrition coach — and that gap is wider than the marketing suggests. This article breaks down what each app actually does, where the overlap ends, and which one fits which kind of person.
Key Takeaway: Fastic is purpose-built for intermittent fasting. Aumaï is purpose-built for daily nutritional understanding. If you want an app that remembers your habits across weeks and explains why your meals matter, they're not really in the same category.
What Fastic does well
Fastic's fasting timer is the best-designed one on the market. It supports 16:8, 18:6, 20:4, OMAD, and custom protocols. The body-status tracker — showing ketosis phases, fat-burning windows, and cellular repair states in a visual timeline — is genuinely motivating and educational for IF beginners.
The AI food scanner (Fastic Plus) logs meals by photo and estimates macros in seconds. The gamified challenge system and social "Buddies" feature give users accountability and community, which research suggests matters a lot for long-term adherence. With 270+ fasting-friendly recipes and an in-app academy, Fastic has built a real content ecosystem around its core hook.
Stat: Fastic has 20M+ users and 421,000+ Google Play reviews with a 4.8/5 average — one of the most-reviewed fasting apps in any app store.
For someone starting intermittent fasting from scratch and wanting structure, motivation, and a community, Fastic delivers.
Where Fastic runs into limits
The fasting-first framing is both Fastic's strength and its ceiling. Once you're past the beginner phase, the question isn't "when should I eat?" — it's "what should I eat, and why does it matter for my body?"
That's where the app starts to show its limits.
No persistent AI memory. "Fasty," Fastic's AI chatbot, answers questions in the moment but doesn't know your history. It can't recall that you struggled with protein last week, that you mentioned feeling sluggish after lunch, or that you've been trying to reduce saturated fat. Every conversation starts from zero.
Nutrition depth is shallow. Fastic tracks calories, protein, carbs, and fat. Fiber — one of the most important nutrients for gut health, satiety, and blood sugar regulation — isn't tracked. Most adults already eat far less fiber than recommended, so ignoring it entirely is a real gap for anyone focused on long-term metabolic health.
Paywall friction. The free tier covers basic fasting and tracking. The AI scanner, advanced analytics, recipes, and challenges are all Plus-only. At $79.99/year ($6.67/month), the price is reasonable — but Trustpilot reviews flag unexpected charges and difficulty canceling after promotional trials more than any other complaint.
Platform lock-in. Fastic is app-only. No web dashboard. No WhatsApp integration. If you prefer logging on your laptop or messaging a coach mid-commute, it simply doesn't work.
Head-to-head: Fastic vs Aumaï
| Feature | Fastic | Aumaï |
|---|---|---|
| Intermittent fasting timer | ✅ Excellent | ✅ Basic support |
| AI food logging (photo/voice/text) | ✅ Plus tier | ✅ All tiers |
| Persistent AI memory | ❌ Resets each session | ✅ Remembers across weeks |
| Conversational nutrition coaching | Limited (Fasty chatbot) | ✅ Full AI coach |
| Fiber tracking | ❌ | ✅ |
| WhatsApp channel | ❌ | ✅ |
| Web dashboard | ❌ | ✅ |
| BYO AI model (MCP) | ❌ | ✅ |
| Gamification / social | ✅ Strong | ❌ |
| Recipe library | ✅ 270+ recipes | ❌ |
| Price | $79.99/year or ~$13/month | €4.99/month (7-day free trial, no CC) |
| Tone | Motivational / fasting-focused | Supportive / education-first |
Where Aumaï wins
Aumaï was built around a different question than Fastic: not "are you fasting?" but "do you understand what you're eating, and why it matters for you specifically?"
The difference shows up in the coach. Aumaï's AI coach has persistent memory — it remembers what you logged yesterday, the week before, the patterns you've described, the goals you set. Ask it why your energy dips after lunch and it can look back at your actual meals to give you a grounded answer. That's not how "Fasty" works. Your brain's hunger signals are shaped by what you eat — understanding that context is exactly what persistent coaching makes possible. A 2026 study on appetite and satiety showed how individually variable these responses are, which is precisely why generic chatbot answers fall short.
Key Takeaway: Aumaï tracks 6 macronutrients including fiber — a nutrient most apps ignore but that has well-documented links to satiety, gut microbiome diversity, and blood sugar stability. Research suggests most adults eat roughly half the recommended 30g daily.
Multi-channel logging matters in practice. Aumaï works on WhatsApp, web, and mobile. Log a restaurant meal by snapping a photo in WhatsApp. Pull your weekly summary on your laptop. Continue the same coach conversation from any device. Nothing resets.
The tone is different too. Aumaï doesn't frame food around fasting windows or "fat-burning phases." It explains why a food choice matters — the nutrients, the likely metabolic effects, the context of your week. Some evidence points to education-based approaches being more sustainable than timer-based ones for long-term dietary behavior change. That's also why habit consistency matters more than variety — something Aumaï's longitudinal memory is built to support.
At €4.99/month — versus $79.99/year for Fastic Plus — Aumaï is cheaper and has no tiered paywall.
Where Fastic might suit you better
Be honest with yourself: if intermittent fasting is genuinely central to how you approach health — not just a feature you want — Fastic is the better fit. Its fasting timer is more refined than anything Aumaï offers. The body-status tracking (ketosis visualization, autophagy windows) is something Aumaï doesn't replicate.
The social layer and gamification work. Some people need the accountability of challenges and "Buddies" to stay consistent. Aumaï's coach is good at one-on-one support, but there's no community dimension.
If you're a beginner to tracking and want a structured onboarding experience, Fastic's academy content and progressive challenges are genuinely well-designed.
Verdict
Fastic and Aumaï solve different problems. Fastic says: "Here's a framework for when to eat — we'll track the basics around it." Aumaï says: "Tell me what you ate, and I'll help you understand your body over time."
For most people looking to eat better in 2026 — not just fast better — Aumaï covers more ground. The persistent memory, multi-channel access, fiber tracking, and education-first coaching reach territory that Fastic doesn't. If you've been comparing them to other apps in the space, it's worth seeing how Aumaï stacks up against MacroFactor too — a different kind of data-focused competitor.
But if fasting is your method, Fastic's timer and community are worth their price. And the two aren't mutually exclusive — some people run both.
— Selena
Sources
- Fastic on Google Play — features and review data
- Fastic Review UK 2026, home-cooks.co.uk
- Fastic Pricing 2026, NutriScan Blog
- 5 IF Apps Ranked 2026, Unstar.app
- Fastic Trustpilot reviews
- Dietary fiber and gut health: Sonnenburg & Sonnenburg, Nature, 2016
- American Heart Association Dietary Guidelines, 2025
- Behavioral adherence and nutrition education: Nutrients, 2023
FAQ
Is Fastic free? Fastic has a free tier covering a basic fasting timer, simple food logging, and water tracking. Advanced features — including the AI food scanner, full recipe library, body-status analytics, and challenges — require Fastic Plus, priced at $79.99/year ($6.67/month) or around $13/month billed monthly.
Does Fastic track fiber? No. Fastic Plus tracks calories, protein, carbohydrates, and fat but does not include fiber. If fiber intake matters to your health goals — gut health, satiety, blood sugar — you'll need a different app. Aumaï tracks 6 macronutrients including fiber as a core feature.
What's the difference between Fastic's AI and Aumaï's AI coach? Fastic includes "Fasty," a chatbot that answers nutrition and fasting questions in the moment but has no memory of your history. Aumaï's AI coach remembers your past meals, progress, and previous conversations, letting it give contextually grounded advice over time rather than generic, session-by-session responses.
Can I use both Fastic and Aumaï together? Yes. Some users use Fastic for its fasting timer and Aumaï for deeper nutritional coaching. The apps serve different purposes with minimal overlap. If you want one tool to handle everything, Aumaï's feature set — including basic fasting support, full nutrition tracking, and AI coaching — covers most use cases.
Which app is better for long-term weight management? Research suggests long-term dietary change depends more on understanding and habit formation than on structured fasting protocols. Aumaï's education-first coaching — which explains why foods affect energy, sleep, and body composition — may support more durable behavioral change for many users. Fastic's gamification and community features work well for people who respond to accountability structures and structured schedules.