We previously covered Taller’s $100K MRR Growth Playbook.
Now, someone cloned the Taller app in French and hit #6 in Health & Fitness.
Here’s how Grandir took over France with a bold copycat play.
Grandir, which means “Grow” in English, launched in July 2025.
The app gives users a personalized height growth plan plus an AI coach.
In the last 30 days, they pulled 50K downloads and $5K MRR.
Grandir runs 4 accounts that together have passed 230M views.
One main account across YouTube, Instagram, and TikTok under the app name, plus a faceless TikTok “ambassador” called @sigmafits.
@sigmafits just crossed 200M views with a fully faceless setup.
The account posted its first video in July 2023 and is now fully sponsored by Grandir.
They stayed viral by leaning on two repeatable height growth formats.
Strategy 1: AI anime stories
Girl rejects short guy -> Guy trains -> Becomes a giant -> App promo.
That same format pushed Grandir’s YouTube page past 8M views.
Strategy 2: the FOMO app formula
Hook: A dramatic claim (If you drink milk, you will never grow past “x” height).
Common habit -> Height shrink -> “Secret” app method -> Height growth.
They also use this on TikTok and Instagram, with one small twist.
Instead of illustrations, they use a mix of height-related clips, and cut the hook claim, going straight to the method.
Grandir took a proven app idea, adapted it for France, and scaled it with two repeatable formats.
You can access all Grandir’s accounts on Shortimize:
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