Quick Answer: Fastient is a detailed fasting journal with notes and weight logging. Fasted offers metabolic phase display and Fast Buddy multiplayer, needs no account, and has a free tier that works on its own. They serve different primary use cases — journaling vs. active fasting with metabolic context.

Fasted vs Fastient: A Detailed Comparison

Fastient and Fasted are both dedicated fasting apps, but they approach the job from different angles. Fastient is primarily a fasting journal — detailed logging and note-taking during fasts. Fasted is a real-time fasting tracker with metabolic phase display and social accountability.

Understanding that difference makes this comparison straightforward.

What Fastient Does

Fastient is built around comprehensive fasting journaling. Its main features include:

• Fasting timer with start/stop functionality
• Ability to add notes during a fast (how you're feeling, observations)
• Weight logging integrated with fasting data
• Visual charts of your fasting and weight history
• Fasting streaks and statistics

Fastient is well-regarded among users who want detailed personal data — not just "I fasted 16 hours" but "I fasted 16 hours, felt good at hour 12, was hungry at hour 14, and weighed X."

What Fasted Does

Fasted focuses on the active fasting experience with metabolic context:

• Metabolic phase display: real-time view of your current fasting phase (fat burning, ketosis, autophagy) during each fast
• Fast Buddy: multiplayer fasting with a partner — see each other's real-time progress
• No account required: start tracking immediately
• A free tier that is a whole app: the timer, all six built-in protocols, phases, streaks and notifications cost nothing; Fasted Pro ($6.99 monthly, $29.99 yearly, $49.99 lifetime) adds the buddy, hunger map, heatmap, analytics, custom protocols, notes and export. There is no free trial
• 26 languages: broad international accessibility
• 4.9-star rating: one of the highest-rated fasting apps available

Feature Comparison

The Key Difference: Journal vs. Tracker

Fastient's strength is data depth for personal journaling. If your primary goal is to document the subjective experience of each fast — notes, weight, mood, symptoms — Fastient provides infrastructure for that. Over time, this can reveal patterns (certain fasts are harder, certain days of the week correlate with better results, etc.) that a simpler timer won't show.

Fasted's strength is real-time metabolic context and active engagement. Knowing that you're currently in the fat-burning phase at hour 13, or approaching ketosis at hour 15, changes how you experience the fast. It answers the "what's happening right now?" question that a simple timer can't. The free autophagy timer answers it for the deepest of those phases without any app at all.

These are complementary needs, and some users might find value in both. But most people need one or the other — and choosing between them comes down to whether journaling or metabolic insight is more motivating for you.

Account and Privacy

Fastient requires creating an account to use. Fasted does not. For users concerned about data privacy or who want to start tracking immediately, Fasted's no-account approach is a meaningful advantage.

Accountability Features

Fastient doesn't have a social or buddy feature. Fasted's Fast Buddy feature lets you invite a specific person to fast alongside you in real time — a stronger accountability mechanism than tracking solo.

Pricing

Both apps have free versions. Fastient may offer premium features for purchase. Fasted's free tier covers the timer, the six built-in protocols, phases, streaks and notifications; Fasted Pro adds the buddy, hunger map, heatmap, analytics, custom protocols, notes and export at $6.99 monthly, $29.99 yearly or $49.99 once for lifetime access. There is no free trial on either side.

Which App Is Right for You?

Choose Fasted if:

• You want to understand your metabolic state during each fast
• You want to fast with a partner in real time
• You prefer no account creation
• Cost is a consideration (both are free, but Fasted has no upsell)
• You want the most highly-rated fasting app

Choose Fastient if:

• You want to journal your fasting experience with notes
• Integrated weight tracking in the same app is important to you
• Detailed historical charts and data visualization are priorities
• Subjective experience logging matters to your practice

The Bottom Line

They're not perfect substitutes for each other because they do different things well. For the majority of users who want an active, engaging, informative fasting tracker, Fasted is the stronger choice. For users who are meticulous data journalists of their own fasting practice and want notes and weight data together, Fastient fills that niche.

FAQ

Can Fastient show metabolic phases like Fasted does?

No. Fastient is focused on journaling and data logging, not metabolic phase display during fasting. This is a unique feature of Fasted.

Is Fastient free?

Fastient has free functionality. Check the current app listing for any premium feature pricing, and see the wider list of fasting apps with no subscription.

Which app has better charts?

Fastient has more detailed historical charts including weight-over-time correlated with fasting. Fasted shows fasting history and streaks. For data visualization depth, Fastient has an edge.

Can I use both Fasted and Fastient?

Yes. Some users use Fasted as their active daily tracker and Fastient for journaling sessions. There's no conflict between using both.

Does Fasted have any note-taking feature?

Not as a core feature in the same way as Fastient. Fasted is optimized for real-time metabolic tracking rather than journaling.