Intermittent fasting for women
Fasting, but make it cute.
A gentle fasting timer with a squad of little food friends. Watch your body move through fat burning and ketosis, keep your streak, and collect 310 Helpers along the way.
Free to start · no account needed · Android 8.0+
12:12 · 14:10 · 16:8 · 18:6 · 20:4 · OMAD · 36h to 72h · Custom
How it works
Three steps, one happy streak
1
Pick your plan
Scroll to a plan: 12:12, 16:8, 18:6, 20:4, one meal a day, a 36 to 72 hour fast, or set your own. Change it whenever life changes.
2
Fast through the zones
One big timer, a Fast Friend cheering, and gentle nudges when you reach your goal.
3
Collect your Helpers
Streaks, missions and points unlock new friends. Fasting longer never earns more, so there is no pressure to overdo it.
Fasting zones
See what your body is up to
The timer shows which zone you’re in, hour by hour, with a notification when you reach the next one.
0h
🍽️ Fed state
Digesting your last meal and storing its energy.
4h
📉 Blood sugar settling
Insulin eases off; stored glycogen takes over.
12h
🔥 Fat burning
Fat becomes a bigger share of your fuel.
18h
⚡ Ketosis
Your liver makes more ketones. Energy often feels steadier.
24h
♻️ Autophagy
Cellular clean-up is thought to ramp up.
Zone times are general estimates and vary from person to person. Zone alerts stop at your goal, so they never push you to fast longer.
Your Fast Friends
Three friends from day one
Avo the Avocado
The calm one. Keeps you steady through the long middle of a fast.
Berri the Strawberry
The cheerleader. Hypes every hour and never misses a milestone.
Chedda the Cheese
The funny one. Roasts your cravings, lovingly.
Collect them all
310 Helpers to meet
Every Helper is a little food or wellness friend with their own pose, personality and lines. They call you Goddess, Queen or whatever you choose.
Streak
10 Helpers
Only earned by keeping your streak, from Sippy at 1 day to Starla at 365.
Mission
7 Helpers
Finish your first fast, share once a week, and earn again for every friend who joins. Three Log missions come with Plus.
Egg
260 Helpers
Hatch Base, Gold and Diamond eggs with points you earn. The chances are shown before every hatch.
💌 Invite
10 Helpers + 10 trinkets
Only by inviting friends, one of each at 1 to 50 friends: Bestie, Sharey, Mallow and more, up to the Friendship crown.
👑 Plus
20 Helpers
Included with Plus and never in eggs, like Gemma, Quartz and Saffi.
Plus · The Log
Log it in one tap
No calorie maths. Tap the picture that matches: a Cup of Water, a Moderate Portion, a Small Nibble. Add what you actually had, or a photo, whenever you like.
👟 Fasted vs feasted cardio
FastHer counts your steps, even while the app is closed, and splits every one into movement during a fast and movement after you’ve eaten.
Today: 5,120 fasted · 3,292 feasted
⚖️ Weigh-ins in two taps
FastHer starts from yesterday’s weight. Nudge it with − or +, tap log, and watch the distance to your weight goal shrink.
Dress up
Kick, Glove, Hat and Aura
The Giftboxes are little characters too. Open them with points you earn and dress each Helper your way in the Trinket tab: rain boots, a beanie, a balloon in her hand, a galaxy behind her. Over 200 trinkets to collect.
🥉 Bronze Box
300 points
Everyday socks, sneakers and soft glows. One in five is Gold.
🥇 Gold Box
600 points
Heels, skates, halos and confetti. Every 3rd box is Gold or better, guaranteed.
💎 Diamond Box
1,000 points
Showpieces that move, like rocket boots and a disco Aura. Every 5th box is Diamond or better.
👑 Plus Box
1,500 points
For Plus members: Plus-only trinkets like the Golden crown, Royal scepter and Constellation. Every 3rd box has one.
Inside the app
Every screen, a little bit sweet
Pricing
Free to fast. Plus to log it all.
Free
$0 forever
Everything you need to fast, keep a streak and collect.
- Timer that counts up or down, fasting zones and streaks
- Fast Friends, every streak Helper and 4 mission Helpers
- Hatch all 260 egg Helpers with points you earn
- Invite-only Helpers and trinkets
- Daily check-in and a free daily spin for bonus points
- Giftboxes of Kicks, Gloves, Hats and Auras, bought with points
- Home screen widgets with a big live timer
- Reminders and all safety features
Save 33% yearly
FastHer Plus
$120 / year
That’s $10 a month, billed yearly, or $15 month to month.
- Everything in Free
- 1,500 points every month to hatch eggs
- The Log: one-tap food, snacks and water, with notes, photos and history charts
- Steps, split into fasted and feasted cardio
- Body tracking: weigh-ins, weight goal, lean vs fat, glucose and ketones
- The Plus Egg, home of 20 Plus-only Helpers
- The Plus Giftbox and a Plus Kick or Aura every month
- The 3 Log missions and their Helpers
Prefer to top up? Point packs start at $10 for 1,000 points, with bonus points on the larger packs ($30, $50 and $100).
Compare Free and Plus
Fasting, streaks and collecting are free forever. Plus adds the Log, body tracking and monthly points.
| Feature | Free | Plus |
|---|---|---|
| Fasting | ||
| Fasting timer, counting up or down | ✓ | ✓ |
| Every plan, 12:12 to a 72-hour fastPlus custom goals in hours, days and fasts per month | ✓ | ✓ |
| Start the next fast automaticallyWhen the feeding window ends | ✓ | ✓ |
| Fasting zones and safety check-ins | ✓ | ✓ |
| Streak calendar, stats and zone badges | ✓ | ✓ |
| Reminders and on-time alerts | ✓ | ✓ |
| Home screen widgets1×1 to 4×4, with a one-tap fast button | ✓ | ✓ |
| USA or Global unitslb, in, fl oz or kg, cm, ml, set from your country | ✓ | ✓ |
| Google Drive backupSaved to your own Drive, restore on a new phone | ✓ | ✓ |
| Helpers and points | ||
| Fast Friends and 10 streak Helpers | ✓ | ✓ |
| 4 mission HelpersFirst fast, share, invite friends | ✓ | ✓ |
| Invite-only Helpers and trinkets10 Helpers and 10 trinkets, from 1 to 50 friends invited | ✓ | ✓ |
| Hatch 260 egg Helpers with points | ✓ | ✓ |
| Daily check-in and free daily spin | ✓ | ✓ |
| Giftboxes: Kick, Glove, Hat, AuraOver 200 trinkets, bought with points; odds shown in the app | ✓ | ✓ |
| Streak outfitsStreak socks at 7 days up to the Crown of light at 365 | ✓ | ✓ |
| Monthly points | — | 1,500 / month |
| The Plus Egg20 Plus-only Helpers to hatch | — | ✓ |
| The Plus Giftbox1,500 points; a Plus-only trinket guaranteed every 3rd box | — | ✓ |
| A Plus Kick or Aura every month | — | ✓ |
| Plus slot in Diamond Giftboxes | — | ✓ |
| 3 Log missions and their Helpers | — | ✓ |
| Log and body | ||
| One-tap food, snacks and waterWith notes and photos | — | ✓ |
| Steps: fasted vs feasted cardioCounted even while the app is closed | — | ✓ |
| Body trackingWeigh-ins, weight goal, lean vs fat, biomarkers | — | ✓ |
| History chartsDay, week, month and year for water, meals, steps and body | — | ✓ |
| Health Connect syncSmart scale, watch, Samsung Health, Fitbit | — | ✓ |
| Price | $0 | $15/mo or $120/yr |
Gentle by design
FastHer is a habit tracker, not medical advice. Fast as long as you like; on long fasts FastHer checks in at 48 hours and every day after. Breaking a fast is never shamed, and nothing in the app rewards fasting longer than you planned. Please talk to a doctor first if you are pregnant, breastfeeding, under 18, diabetic or have a history of disordered eating.
FAQ
Questions, answered
Do I need an account?
No. Your fasts, logs and Helpers stay on your phone. If you like, sign in with Google to back up to your own Google Drive and move to a new phone; FastHer only sees its own backup file there.
What if I end a fast early?
If you pass your partial minimum (12 hours by default), it still counts toward your streak. Below that, it’s logged kindly and your Helpers cheer you on for next time.
How do eggs work?
You earn points from completed fasts, streak milestones and missions, then spend them on Base, Gold or Diamond eggs. The chances for each egg are shown before you hatch, and duplicates give some points back.
Does FastHer count steps when the app is closed?
Yes. With Physical activity allowed, Google Play services counts your steps in the background on the phone, and FastHer picks them up every 15 minutes and whenever you open it. Steps are split into fasted and feasted cardio.
Does FastHer sync with Samsung Health, Fitbit or my smart scale?
Yes, through Health Connect. Turn on Settings › Health apps and FastHer reads your weight, body fat, lean mass, resting heart rate, glucose and steps. FastHer only reads, and your data stays on your phone.
How do invites work?
Invite a friend from Missions. Once she’s set up FastHer, her app gives her a thank-you code to send back. You earn points every time a friend joins, and invite-only Helpers and trinkets at 1 to 50 friends.
Can I cancel Plus any time?
Yes. Plus is billed through Google Play and you can cancel there whenever you like. Helpers you’ve collected stay yours; the Log and body tracking lock again until you resubscribe.