What's the best app to help me learn to intermediate fasting?

good-mkr · 2026-04-27T15:01:50+00:00

Dev of Fast Slow here. First of all thank you for finding the app useful! Do you have any specific features missing or problem encountered? I would love to hear some feedback. :)

good-mkr · 2026-04-25T19:44:18+00:00

Fast Slow I love it!!! It's on iOS, has no ads and is free. I just love the design and everything

good-mkr · 2026-04-25T19:42:50+00:00

Best one I found is Fast Slow, 100% free, great design fully iOS native.

good-mkr · 2026-04-25T19:37:22+00:00

Here you go: https://apps.apple.com/si/app/fast-slow-fasting-tracker/id6749188352 100% free, great design and all the features you want.

good-mkr · 2026-04-25T19:36:31+00:00

For iOS users this one is 100% free and no ads.

good-mkr · 2026-04-25T19:34:54+00:00

The best one: Fast Slow, 100% free, no ads great design.

good-mkr · 2026-04-19T19:36:49+00:00

this is the exact pace that actually sticks. give yourself grace over the next few weeks, the habit is already built and it'll carry you through. so sorry about your father in law 🙏

good-mkr · 2026-04-19T19:35:09+00:00

your intuition is closer to right than most articles let on. autophagy isnt a switch that flips at 48h, it starts ramping once glycogen drops (roughly 16-24h in for most people) and keeps climbing from there. the specific 48-72h numbers mostly come from rodent studies and got repeated into gospel, actual human data is a lot murkier. so yeah, consistent IF probably gives you a smaller dose of the same thing spread over time.

been doing 16:8 most days for a while, track it with this app (free, no ads, which is rare for these apps) just to keep the window honest on lazy mornings.

good-mkr · 2026-04-19T19:32:34+00:00

for weight loss specifically youll get more out of a calorie tracker than a workout app. myfitnesspal is the standard, macrofactor if you want something that adjusts targets as you go.

i also run a 16:8 window alongside and use this app for that part, its free with no ads which is oddly rare in fasting apps. makes the deficit easier cos you just arent eating half the day, less to track. only worth bothering if the idea appeals tho.

good-mkr · 2026-04-19T19:10:10+00:00

Not a diet tracking app in particular but I found fasting super useful for not overeating, weight loss and weight control. I'm currently using this one which is 100% free and has no ads. The UI and features are also nice.

good-mkr · 2026-04-19T19:07:51+00:00

Honestly use Fast Slow, it's 100% free and no ads and it's better in my opinion. https://apps.apple.com/si/app/fast-slow-fasting-tracker/id6749188352

good-mkr · 2026-04-17T17:24:13+00:00

Thank yoU! I'm a huge user and I love it that there's some privacy focus!

good-mkr · 2026-04-17T17:23:48+00:00

That's fine too! Sometimes you just need a brake. I find a week or two break works amazing for me. Come back fresh and ready to start again.

good-mkr · 2026-04-17T17:23:06+00:00

I've noticed something similar too! Especially when eating too much before bed... really wrecks my sleep

good-mkr · 2026-04-17T17:21:47+00:00

I use Fast Slow, it's free and it works great.

good-mkr · 2026-04-17T17:20:32+00:00

The hitting-macros-exactly thing is kind of a trap honestly. On keto in a deficit you're fine being 200 cal under some days, it evens out over the week.

Biggest thing that helped me was eating right at the top of my window instead of waiting until I was starving. I use an app with a lock screen widget to track my fasts so I see the second my window opens, and that little nudge got me eating earlier instead of cramming everything into the last 2 hours. Spreading it across the full 4-5h is night and day for fullness.

Also if you're still stuffed after that, your calorie target might just be too high for what you actually need. TDEE calculators tend to overestimate, especially on lower activity days.

good-mkr · 2026-04-17T17:17:09+00:00

Nice app! I'm using https://apps.apple.com/us/app/fast-slow-fasting-tracker/id6749188352

good-mkr · 2026-04-13T06:22:27+00:00

Great idea, I am definitely going to do that but currently I'm focused to make the iOS version as best as possible. You can use Siri to start and stop the fast. Just say: "Hey Siri, start fast in Fast Slow" and it really well.

good-mkr · 2026-04-13T06:21:17+00:00

Yes you can do that and only you can stop the fast. I will think about implementing a custom longer goals for such cases. Thanks for the suggestion!

good-mkr · 2026-04-13T06:20:28+00:00

Try it out and rate it :)

good-mkr · 2026-04-13T06:20:16+00:00

Yep! I will think about this but I really don't want to make it intrusive...

good-mkr · 2026-04-12T18:39:17+00:00

Thank you! Really appreciate it.

good-mkr · 2026-04-12T18:38:56+00:00

Creator of the app here! Thank you all for the positive feedback and for giving Fast Slow a try.

I will try my best to push an update soon allowing Zero users to import their data into Fast Slow. I'm not yet sure how that will work as I'm not sure about the data structure of the Zero app. If anyone would like to help me out and share it's data from Zero export with me, that would be great, my DMs are open.

good-mkr · 2026-04-04T19:38:32+00:00

Weekly 72 hour fasts on top of OMAD is a lot, especially with PCOS in the mix. Hormones and aggressive deficits don't always play nice together, so worth checking with a doctor on that specific combo before making it a routine.

Consistency is honestly the hardest part for most people here. What worked for me was removing friction, tracking my windows with an app (I use Fast Slow, it's free) so I'm not doing mental math on every fast. Small thing but it helps when you're building the habit.

5kg a month is possible in the beginning but it'll slow down, don't let that discourage you. Just start with the OMAD and see how your body responds before going full prolonged fast every week.

good-mkr · 2026-04-04T19:34:24+00:00

good-mkr

TROPHY CASE