Skip to content
FastBento

Fasting planner and journal

Your fasting schedule should fit your week, not the other way round.

FastBento plans your fasts around your real life: work, meals, workouts and travel. Pay once for Lifetime, with no subscription. Your records stay on your device, with no account needed.

See how it works
  • Coming soon toApp Store
  • Coming soon toGoogle Play
  • Coming soon toWeb
Fit My Week preview: your week, planned, with the inputs used and a Save this week button.
The planner with Keep, Move, Shorten and Skip choices for each day, and a Travelling this week card offering to keep the same length or the same clock times.
Today with a fast in progress: a ring around the elapsed time, the time the fast ends, and an End fast button.Today with a fast in progress: a ring around the elapsed time, the time the fast ends, and an End fast button.

Fit My Week

A fasting plan built around your real week

Tell FastBento your usual day and the things you want to protect: a family dinner, a workout, a work shift. It places each fasting window around them, so the week leads and the fast follows.

  • Work, meals and workouts

    Protect what matters, and FastBento keeps it clear of every fast.

  • Keep, move, shorten or skip

    Every change comes with a one-line reason, and you decide. A changed plan can shorten or skip a fast. It never adds a make-up fast.

  • Preview first

    You see the week before you save it. Saving a plan never starts a timer.

Fit My Week on the web, step 4 of 4: a preview of your planned week with the inputs used and a Save this week button. It is not saved until you confirm.
Example — no personal dataDesign preview

Friday to Saturday

9:00 PM → 7:00 AM · 10h

Your routine was 9:00 PM → 11:00 AM · 14h

  • Dinner ends 9:00 PM
  • Meal 7:00 AM before workout

Shortened to 10h so your 7:00 AM meal before Saturday's workout stays in place. Sunday is unchanged.

Keep, move, shorten or skip. Shorten or skip anytime.
The planner with Keep, Move, Shorten and Skip choices for each day, and a Travelling this week card offering to keep the same length or the same clock times.

Travel

Travelling across time zones?

Choose how your fast follows you. FastBento shows the result of each choice before you apply it, and a running fast is never changed behind your back.

  • Keep the same length
  • Keep the same clock times

Every day

Keep dinner and training in your week

The same calm tools, whether you fast every day or only some days.

  • Plan around your week

    Add the meals, training, work and sleep that matter. FastBento places your fasting windows around them and gives a one-line reason for every change.

  • Fast and log in seconds

    Start the timer in two taps, with no account. Quick-log a meal, water, weight, sleep or mood. Ending early or resting is an ordinary choice.

  • See which routine fits you

    Simple trends from your own records, with the number of days each one rests on and the gaps left visible.

  • Meals
  • Water
  • Weight
  • Sleep
  • Mood
The Trends screen: Duration and Body baseline cards, with plain notes when there are not enough records yet, and a History list.The Trends screen: Duration and Body baseline cards, with plain notes when there are not enough records yet, and a History list.

Your data

Your records stay on your device

Health-adjacent records deserve better than an account and a server. FastBento keeps yours with you.

  • Stays on your device

    Fasts, meals, weight, sleep, mood and notes live in an encrypted vault on your phone, or in your browser on the web. We never receive them.

  • No account needed

    There is nothing to sign up for. No name, no email, no password to forget.

  • Encrypted backups you control

    Save a backup file wherever you like, locked with a password only you know. Use it to move to a new phone. Export CSV or JSON any time, or delete everything.

  • No tracking

    No analytics, no ads and no trackers in the app or on this site.

Lifetime

Own your fasting tools with one purchase

FastBento is free to use. When you want more, Lifetime is a single payment: no subscription, no renewal, no countdown to a bill.

Platforms

iPhone, Android and the web, together

The same planner and timer rules run on every platform, so your plan reads the same wherever you open it. Move between them with a backup file.

  • iPhone

    Built for iPhone, with the same planner and timer rules.

    Coming soon

  • Android

    Built for Android, with the same planner and timer rules.

    Coming soon

  • Web

    Runs in your browser, with your records kept in the browser.

    Coming soon

FastBento isn't available to download yet.

Good to know

A planner, not a prescription

Questions?Support and FAQPrivacy policyTerms of use