$100K in 90 daysSep 6, 2025

Our simple app made $100K in 90 days

Nikita & EvgeniyNatural Write

AI WritingTikTok GrowthMobile App
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The Story

Nikita and Evgeniy built Natural Write - an AI-powered app that helps users rewrite AI-generated text to sound more human and bypass AI detection. In just 90 days, they went from idea to $100K in revenue, primarily through viral TikTok content.

As Nikita explains: "User just passed a generated text, click humanize button and receive 100% human written text and this text usually bypass most AI detectors."

The idea came from market research: "During our research we noticed that there are so many videos about humanizers and I just thought that okay we can do the same, it's much easier to promote it on TikTok because it's hot topic."

Their results were explosive: "First months, $41K, second months, $32K, and third months, $27K... total $100K in revenue."

Key Insights

The Origin Story

  • Found the idea through TikTok research
  • "We came to that idea a little bit randomly"
  • Noticed humanizer videos were trending
  • Built product in two weeks, started promoting immediately
  • "It worked out, yeah"

Failed First Attempt

"Firstly we tried hiring influencers and paying them to make videos for us but it was unsuccessful experience because they generated just some views and almost no conversions."

The Pivot to Self-Made Content

"After that we decided to create our own accounts on TikTok and we started filming ourselves. We started posting videos every day. Just from the first video, we got the first sale."

7-Step TikTok Marketing Playbook

Step 1: Niche Research

"Do your niche research before you even start coding because you need to find proofs. Proof that you have competitors on TikTok and proof that these competitors have viral videos on TikTok as well."

Step 2: Create TikTok Account

  • If not in target location: buy VPN, need iPhone, phone number from target location, new email, new Apple ID
  • "It is very important your first TikTok account should be registered on your phone number"

Step 3: Warm Up

"You have to spend 30-50 minutes a day for 3-5 days engaging with content in your niche. Like videos, leave comments, follow creators, use search to find videos in your niche."

Step 4: Recreate What Works

"Start by making one-to-one high-quality copies of viral videos in your niche. It is very important to add captions in TikTok editor as well."

Step 5: Posting

"Start with posting just one video per day at optimal time for your target audience. Usually it will be the second half of the day."

Step 6: Innovate

"When your videos start going viral and you figure out how everything works on TikTok, you can begin experimenting with your own ideas and your own formats."

Step 7: Scale

"Once you having success and getting views, you can scale your operation by creating more accounts and hiring creators."

Viral Video Examples

Video 1: Jim Carrey Comedy Clip

"You have an essay to submit in 5 minutes... This video took couple of hours to make and in the beginning we didn't expect like this video will reach 4 million views. This format was already proven by other creators. So we just copy it and it works really well."

Video 2: Before/After Demo

"We show exactly the problem like you have 100% generated text. You do this and you have like 100% human written text. Once it gets viral, we start getting a lot of sales immediately."

"Funny stuff here. That original video has around 150K views, but the copy from Yini gets 1.5 million views."

Business Numbers

  • Total TikTok views: ~9 million (from all accounts)
  • Total website visits: ~300K
  • Signups: 250K
  • Conversion rate (visit to signup): 80% - "That is crazy"
  • Revenue: $100K in 3 months

Tech Stack

  • Next.js
  • Postgres
  • Coolify (hosting)
  • NextAuth + Resend (auth/email)
  • Server cost: $35/month
  • Resend: $20/month
  • VPN: $5/month per 5 devices
  • US phone numbers: $5/month per number

"Other than cost of our time, the cost to run this business is very low."

Key Advice

"You need to start your TikTok journey by yourself. Try find out what works and only then start thinking about delegate or hiring other people."

"Don't over complicate it. Skip inventing your own TikTok format and just replicate what's already going viral."

Resources

  • Natural Write: Available on App Store and Google Play