Zero is an intermittent fasting tracker that has added protein, meal, hydration and habit tracking, aimed at people who want to lose fat and build healthy habits.
Maker
Zero Longevity Science, Inc.
Launched
Dec 2016
Category
Health & Fitness
Price
Free, subscriptions $9.99 to $89.99
US ratings
445K, 4.8 avg
Best rank
#92 grossing, US
Zero Longevity Science, Inc. makes the app; it was released 2016-12-23 and has 445,331 US ratings at 4.82 [App Store]
True Ventures wrote on 2018-11-30 that Zero hit 1 million downloads and was the #1 fasting app in the App Store
A tweet from Elon Musk in August 2022 gave a spike: +35K downloads in 3 days against about 600 per day before
How Zero got its users
Zero grew on founder credibility, press and one Elon Musk tweet, and now lives mostly on brand search and word of mouth. Confidence: low
Main channel: Press and articles, as the reading above names it
Press and articlesApp Store search and chartsYouTubeCreators and UGCPodcasts and interviewsPosts on X
Bar length: how much evidence we found for the channel, on a log scale (ad-days for ads, likes for creator posts, views for own posts and YouTube, articles, episodes, ratings). It shows where the evidence is, not a measured install share.
Creator posts
Category colors match on every tab
Creator posting patterns
posting patterns of 10 creators; 1 profiles checked so far
4 of 10 creator profiles checked: 2 with "several posts within a month", 1 with "2-3 posts, 30+ days apart", 1 with "one post".
Daily tracker, 2026-11-09: the rating count and average in each country's App Store, and the best position in Apple's top 100 for the category (overall when only that). A dash: not in that top 100. Listing language: whether the App Store listing is in the country's main language. Ads in it: share of the dissected ads in that language.
What can your app copy from Zero?
Enter your app and we write the first lessons for it from Zero and the apps around it. Free.
01Creator types: 1 of 10 creator profiles opened; 6 creators stay "not checked yet" until checked.
027 accounts found in searches are left out of the creator counts: 2 point at another app or are named like the app without being it, 5 never name, tag or link it.
03No Meta video ads dissected yet.
Store data
secondary
445,331
ratings
4.82
average rating
- / #92
US free / grossing, 2026-07-30
3
countries charting
Caveats
9
Meta Ad Library returned 0 creatives from logged-out keyword search
TikTok library covers EU/UK/CH only; US ads are not visible
TikTok card counts are view counts shown on search cards, not full stats
No TikTok account was verified as the app's own
0 App Store reviews, 0 Reddit threads and no interview or podcast transcripts were available
Instagram reel rows were not readable as per-post views
Press pages were listed without readable sentences
The 0x Project X posts in the input belong to another company and were ignored
channel shares are my estimates, not source figures
Paid: every active ad found for the advertiser in the Meta Ad Library with start date and variant count as Meta publishes them; videos fetched for analysis only and deleted after frames, transcript and OCR were derived; one model read per creative into a fixed schema. Organic: public profile counts only. Creators count only when a caption tags, links or names the app (graded per creator). Founder statements quoted verbatim and checked by code. Estimates labelled and linked. Not affiliated with the app or its publisher.
What can your app copy from Zero?
Enter your app and we write the first lessons for it from Zero and the apps around it. Free.
No ads in Meta's Ad Library (logged-out keyword searches, checked 2026-11-09). No ads in TikTok's ad library (EU, 2 searches). No Google ads for zerolongevity.com. Not shown for Zero, nothing to fill them: Winning ads, Top videos, Teardowns, Ad categories, Creative families, Psychology. Data as of 2026-11-09.
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