Rich text editing, real-time collaboration, and AI

Flexum is a software agency with years of expertise in CKEditor, TipTap, and TinyMCE. We specialize in advanced text editing features, real-time collaboration, and AI-powered integrations to help SaaS apps grow, stand out, and keep users coming back for more.

WHY WORK WITH FLEXUM?

🌟 Expertise you can rely on: We’ve honed our skills by developing cutting-edge functionality for apps across various categories, from productivity tools to EdTech and beyond. Whatever your app needs — whether it’s real-time collaboration, generative AI, or text editing — we’ve got the skills to deliver.

🔍 A process built around you: Every app is unique, and so is our approach. We work closely with you to understand your goals and challenges, then create tailored solutions that make a real difference.

📈 Results that speak for themselves: Whether it’s boosting engagement, increasing retention, or driving growth, our features are designed to help your app thrive in a crowded market. From startups to established brands like Distribute, Blooksy, and EmailOctopus, we deliver impactful solutions for every client.

🤝 How we work together:

1️⃣ Discovery phase: Let’s talk! In a free, no-pressure call, we’ll learn about your app, brainstorm ideas, and see if we’re a good fit.
2️⃣ Pilot project: Over one month, we’ll build a proof of concept or tackle a specific feature so you can see us in action — no risks, just results.
3️⃣ Pilot execution: We collaborate closely with your team to deliver a polished, functional solution that fits your vision.
4️⃣ Long-term partnership: For six months (or more), we’ll integrate with your team to build advanced features and adapt as your needs evolve.
5️⃣ Ongoing support: After launch, we stick around to provide updates, resolve issues, and keep your app ahead of the game.

Contact us to see how your SaaS app can become the best version of itself — [email protected]

Ukraine Ukraine
Uhorska St, 14A, Lviv, Lviv 79034
+380963504780
$50 - $99/hr
10 - 49
2020

Service Focus

Focus of Mobile App Development
  • Hybrid - 50%
  • React Native - 50%
Focus of Software Development
  • Javascript - 20%
  • Node.js - 20%
  • ReactJS - 60%
Focus of Web Designing (UI/UX)
  • Website - 20%
  • User Experience - 60%
  • Product Design - 20%

Industry Focus

  • Advertising & Marketing - 20%
  • Education - 20%
  • Media - 20%
  • Transportation & Logistics - 20%
  • Startups - 20%

Client Focus

100% Small Business

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Client Portfolio of Flexum

Project Industry

  • Advertising & Marketing - 25.0%
  • Travel & Lifestyle - 25.0%
  • Art, Entertainment & Music - 25.0%
  • Startups - 25.0%

Major Industry Focus

Advertising & Marketing

Project Cost

  • $10001 to $50000 - 100.0%

Common Project Cost

$10001 to $50000

Project Timeline

  • 1 to 25 Weeks - 75.0%
  • 26 to 50 Weeks - 25.0%

Project Timeline

1 to 25 Weeks

Clients: 8

  • Castos
  • Blooksy
  • ASO Giraffe
  • Angle
  • SendMePack
  • TheatreSubs
  • EmailOctopus
  • Distribute

Portfolios: 4

ASO Giraffe: A/B Test Apple App Store and Google Play Pages

ASO Giraffe: A/B Test Apple App Store and Google Play Pages

  • ASO Giraffe: A/B Test Apple App Store and Google Play Pages screenshot 1
$10001 to $50000
35 weeks
Advertising & Marketing

ASO Giraffe is an online service that helps improve your organic search and advertising performance in Apple App Store and Google Play by running A/B tests. 

SendMePack: Mobile App for Recycling Promotion

SendMePack: Mobile App for Recycling Promotion

  • SendMePack: Mobile App for Recycling Promotion screenshot 1
  • SendMePack: Mobile App for Recycling Promotion screenshot 2
$10001 to $50000
10 weeks
Travel & Lifestyle

SendMePack is an online service that encourages the reuse of boxes with special offers from partners. The SendMePack app not only gives you an overview of which online shops and brands are already using sustainable packaging. It also offers you the opportunity to participate actively and check in the packages you have received via QR code and information such as the CO2 value saved.

Castos: Podcast Hosting Platform

Castos: Podcast Hosting Platform

  • Castos: Podcast Hosting Platform screenshot 1
  • Castos: Podcast Hosting Platform screenshot 2
$10001 to $50000
20 weeks
Art, Entertainment & Music

Castos is a podcast hosting platform that helps grow an audience through public podcasts and offer exclusive content through private podcasts. With Castos’ mobile app you can give your listeners a rich listening experience to your private podcast. No more fussing with private RSS feeds or potentially insecure content that can too easily be shared outside your network.

Blooksy: Online Collaborative Publishing Platform

Blooksy: Online Collaborative Publishing Platform

  • Blooksy: Online Collaborative Publishing Platform screenshot 1
$10001 to $50000
20 weeks
Startups

Blooksy is a cloud-based software service designed to help authors write books. The platform helps authors write and format their books through easy-to-use templates and also offers the ability to share manuscripts with others in real-time for feedback and hire editors and book cover designers as well as publish directly to online retailers and book-printing partners, thereby enabling authors to easily write and publish their books.