Software Alternatives, Accelerators & Startups

FlutterFlow VS Cal.com

Compare FlutterFlow VS Cal.com and see what are their differences

FlutterFlow logo FlutterFlow

FlutterFlow is an online low-code platform that empowers people to build native mobile apps visually.

Cal.com logo Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
  • FlutterFlow Landing page
    Landing page //
    2023-05-09
  • Cal.com Landing page
    Landing page //
    2023-10-08

FlutterFlow features and specs

  • Ease of Use
    FlutterFlow allows for visual development with its drag-and-drop interface, making it easier for non-developers to design and create applications.
  • Quick Prototyping
    With its rapid design and live preview capabilities, FlutterFlow enables quick prototyping, allowing teams to iterate on their designs swiftly.
  • Full Flutter Code Export
    FlutterFlow provides full Flutter code export, giving developers the flexibility to modify the code further or integrate it into existing projects.
  • Integration with Firebase
    It has seamless integration with Firebase, which simplifies backend capabilities such as authentication, Firestore database, and other Firebase services.
  • Responsive Design
    The platform supports responsive design out of the box, ensuring that applications look good on various screen sizes and orientations.
  • Custom Code
    Developers can add custom Dart code to extend the functionality of their app beyond what the drag-and-drop components offer.

Possible disadvantages of FlutterFlow

  • Cost
    FlutterFlow is a subscription-based service, which can add an ongoing cost for users, especially those who might only need occasional development work.
  • Learning Curve
    While it's user-friendly, there can be a learning curve for users who are new to Flutter or similar visual development tools.
  • Limited Advanced Customization
    For highly customized or complex applications, the drag-and-drop interface might be limiting, requiring developers to manually augment the generated code.
  • Performance Concerns
    Applications built with visual development tools might suffer from performance issues compared to those hand-coded by experienced developers.
  • Dependency on Platform
    Relying on FlutterFlow means depending on its sustained support and updates. Any changes in its service offerings or terms could impact ongoing projects.
  • Exported Code Readability
    The exported code might not be as clean or readable as manually written code, potentially making future modifications more challenging for developers.

Cal.com features and specs

  • Customizable
    Cal.com allows extensive customization to fit various branding and scheduling needs, which makes it adaptable for different types of users including businesses and individuals.
  • Open-source
    Being an open-source platform, Cal.com provides the flexibility for developers to modify and extend the software as per their specific needs, fostering a collaborative development environment.
  • Integrations
    Cal.com offers a wide range of integrations with other software tools like Google Calendar, Microsoft Outlook, and Zoom, enhancing its functionality and making it easier to fit into existing workflows.
  • User-friendly Interface
    Cal.com has an intuitive and clean interface that makes it easy for users of all technical skill levels to set up and manage their scheduling.
  • Privacy-focused
    Cal.com emphasizes data privacy, ensuring user information is handled securely, which is crucial for users who need to comply with regulations like GDPR.

Possible disadvantages of Cal.com

  • Learning Curve
    Although it is highly customizable, the plethora of options and features may result in a steeper learning curve for new users who are not familiar with such scheduling tools.
  • Limited Free Version
    The free version of Cal.com comes with limitations that may not be sufficient for growing businesses or advanced users who require more comprehensive features.
  • Dependency on Integrations
    Cal.com's effectiveness heavily depends on its integrations. Without these integrations, some users might find the tool less useful or incomplete, especially if their primary tools are not supported.
  • Support
    While open-source has many benefits, it may also mean that immediate, personalized support could be limited compared to fully commercial solutions. This might pose a challenge for users needing quick resolutions.
  • Performance
    As an open-source platform, the performance might vary depending on how it is hosted and managed. Suboptimal configurations could lead to slower performance or downtimes.

Analysis of Cal.com

Overall verdict

  • Cal.com is generally considered a good option for scheduling and calendar management.

Why this product is good

  • Cal.com is praised for its open-source nature, allowing for greater customization and integration flexibility. It offers a user-friendly interface and supports various calendar integrations, making it a versatile tool for individuals and businesses alike.

Recommended for

  • Freelancers who need a simple yet effective scheduling tool.
  • Small businesses looking for a customizable scheduling solution.
  • Developers who appreciate open-source software and need a tool they can modify.
  • Businesses seeking a platform that can integrate with existing tools and workflows.

FlutterFlow videos

FlutterFlow Intro

More videos:

  • Review - Is FlutterFlow App Builder that good?
  • Review - What is FlutterFlow? | Reviewing FlutterFlow | Flutter App Develpment | Introduction to FlutterFlow
  • Review - Adalo vs FlutterFlow | No Code App Builder
  • Review - Review: FlutterFlow is a cloud-based low-code or no-code development environment for Flutter.
  • Review - FlutterFlow vs Bubble | No Code Tool Review

Cal.com videos

What can you do with Cal? | Cal.com Version 1.1 Launch | 10 new languages

More videos:

  • Review - Cal.com Version 1.0 Launch Event

Category Popularity

0-100% (relative to FlutterFlow and Cal.com)
No Code
100 100%
0% 0
Productivity
0 0%
100% 100
Application Builder
100 100%
0% 0
Appointments and Scheduling

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare FlutterFlow and Cal.com

FlutterFlow Reviews

Exploring 15 Powerful Flutter Alternatives
FlutterFlow is a SaaS platform using Flutter for building iOS, Android, and web apps via a visual interface and workflows. FlutterFlow introduces an excellent collaborative dimension to app development. With its robust component library tuned specifically for mobile experiences, less technical team members can readily contribute ideas and prototypes. Product managers can...

Cal.com Reviews

I've poked around a while ago at some Calendly alternatives (specifically was lo... | Hacker News
I tried using https://cal.com for a bit but ended up just switching over to https://zcal.co and it has been great so far. All these other scheduling tools end up trying to do too much and always seem to end up a bit clunky and charge absurd amounts for it

Social recommendations and mentions

Based on our record, Cal.com should be more popular than FlutterFlow. It has been mentiond 56 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

FlutterFlow mentions (14)

  • The Best No-Code Android App Builders to Launch Your Mobile App in 2025
    FlutterFlow brings the power of Flutter's native performance to no-code development, offering a unique compromise between coding and no-code tools. - Source: dev.to / 25 days ago
  • Getting Started With FlutterFlow
    1. Sign Up: Begin by visiting the FlutterFlow website and signing up for an account. The free tier provides access to essential features, while paid plans unlock more advanced options. 2. Create a New Project: Once logged in, click on "Create New Project." FlutterFlow offers a variety of templates to choose from, or you can start from scratch to build a fully customized app. 3. Design Your User Interface: The... - Source: dev.to / 10 months ago
  • Creating Intelligent Apps Made Easy: AI-Powered Development With FlutterFlow
    Created by former Google engineers Abel Mengistu and Alex Greaves, FlutterFlow is an online, browser-based app builder that allows users to create native cross-platform applications with no code. As a third-party visual app builder for the Flutter framework, it significantly accelerates the AI app development process. To know more, check out our previous blog: What is FlutterFlow: Top Features, Pros, Cons, and More. - Source: dev.to / 11 months ago
  • FlutterFlow (YC W21) Is Hiring
    We're looking for people who are passionate about ML and DevTools and can get behind our mission: to help the world build great products. FlutterFlow (https://flutterflow.io was built by someone on our team in a matter of days. If you find unreasonable excitement in: - learning/growing and becoming more productive. - Source: Hacker News / over 1 year ago
  • A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev
    Flutter Flow — Build your Flutter App UI without writing a single line of code. Also has a Firebase integration. The free plan includes full access to UI Builder and Free templates. - Source: dev.to / over 1 year ago
View more

Cal.com mentions (56)

  • 5 Side Project Ideas for Developers to Monetize as Micro-SaaS in 2025
    Take Cal.com (https://cal.com/), formerly known as Calendso. It started as an open source alternative to Calendly which offers a free, self-hostable version for users. - Source: dev.to / 3 months ago
  • Using Clerk SSO to access Google Calendar and other service data
    BookMate is an open-source, publicly accessible, lightweight clone of popular booking services like cal.com or Calendly. - Source: dev.to / 6 months ago
  • My Journey into Open Source: First Contributions and Lessons Learned
    Then, I came across Cal.com, a fantastic open-source project for scheduling meetings and managing tasks (super useful for productivity!). I knew the basics of Git but wasn’t quite there with forking, merging branches, and all the intricate Git processes. After some YouTube tutorials, I started to get the hang of things. 😅. - Source: dev.to / 7 months ago
  • Start your own (side) business with open-source in mind
    Cal.com is an open-source event-juggling scheduler for everyone, and is free for individuals. - Source: dev.to / over 1 year ago
  • Fellow HSP entrepreneurs, how do you manage your energy and stress?
    I force clients who want to talk to me to book a call. I use cal.com (free) and my Google Calendar (which its linked to) only allows calls on specific days/times. I have a few "Call Blocks" where they can book. That let's me do calls in a small section of my week, with ample downtime to recover the rest of the week. I'm still learning how many calls a day I can handle. Currently anything more than 2 is too much. Source: over 1 year ago
View more

What are some alternatives?

When comparing FlutterFlow and Cal.com, you can also consider the following products

Bubble.io - Building tech is slow and expensive. Bubble is the most powerful no-code platform for creating digital products.

Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.

Adalo - Build apps for every platform, without code ✨

TidyCal - Optimize your schedule with custom booking pages and calendar integrations

Glide - Send lightning fast video messages, see responses live or whenever it's convenient. Get closer to the ones you love with video communication.

SavvyCal - A scheduling tool both the sender and the recipient will love.