Fidelinex / Tools
🇧🇷 PT
Fidelinex Tools

Free digital marketing
tools

Everything you need to manage and improve your business digital presence — no login, no sign-up, no cost. Built by Fidelinex for small and medium businesses.

✅ 100% free
🔒 No data stored
🤖 AI-powered
📱 Mobile friendly

Available tools

👥
Instagram

InstaCheck — Who doesn't follow me back?

Upload your Instagram ZIP and find out who you follow but doesn't follow you back. Full analysis in seconds.

Open →
✍️
New Free AI

AI Caption Generator

Generate creative AI captions for Instagram, Facebook, LinkedIn and TikTok. Choose your tone and platform.

Open →
🔜

More coming soon

UTM Builder, QR Generator, Meta Preview and more.

Why use Fidelinex Tools?

Fidelinex Tools was built to help small and medium businesses compete in the digital space without investing in expensive tools. All tools are developed with a focus on simplicity, privacy and results.

No data is stored on our servers. Everything is processed in real time and discarded immediately after use.

Frequently asked questions

Are the tools really free?
Yes, all Fidelinex Tools are 100% free. No paid plans, no usage limits, no mandatory sign-up.
Is my data stored anywhere?
No. No files or personal data are stored on our servers. Processing happens in real time and is discarded immediately after use.
How does the AI caption generator work?
You describe the post content, choose the social network and desired tone. The AI instantly generates a complete caption with emojis and relevant hashtags.
Does InstaCheck need my Instagram password?
No. InstaCheck only uses the ZIP file exported by Instagram itself — no login or password required.
Can I use the tools on mobile?
Yes, all tools are responsive and work on any device.