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Callvent.app VS Sing App React Java

Compare Callvent.app VS Sing App React Java and see what are their differences

Callvent.app

Callvent detects calls and helps you create calendar events. Call log tracker, call history, notes, missed call reminders. Free to try, plans from $0.99/month.

Rating
0 reviews
Pricing
Paid Free trial $0.99 / Monthly (7-day free trial. Monthly $0.99, Yearly $4.99, Lifetime $14.99)
Alternatives Is it good?
Sing App React Java

React Admin Dashboard Template with Java Backend

Rating
0 reviews
Alternatives Is it good?
SIPNEX
Carrier-grade call tracking with dynamic number insertion, per-campaign tracking numbers, real-time CDRs, and A-level STIR/SHAKEN attestation. Know which campaigns drive calls. sponsored
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Base details

Website, pricing, platforms and company facts side by side.

Callvent.app
Sing App React Java
Website callvent.app flatlogic.com
Pricing
Paid Free trial $0.99 / Monthly (7-day free trial. Monthly $0.99, Yearly $4.99, Lifetime $14.99)
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Company Startup from Germany —
Listed in
Call Management Caller ID Personal CRM CRM Call Tracking And Analytics +2
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About Callvent.app and Sing App React Java

In their own words, as submitted to SaaSHub.

Callvent.app
Sing App React Java

Callvent is a call logging app for iPhone, Android, and Wear OS that turns your phone calls into calendar entries. When a call ends, Callvent shows a notification with the call duration. One tap saves it to your calendar; open the full view to add a contact, notes, tags, and a callback reminder....

Read more about Callvent.app

No description of Sing App React Java yet.

Analysis

An editorial look at what each product does well and who it suits.

Callvent.app
Sing App React Java

Overall verdict

  • I don't have verified, up-to-date information about Callvent.app specifically, so I can't confidently confirm whether it's good or not. It appears to be a lesser-known or newer tool that isn't well-documented in my training data, so any specific claims about its features, pricing, or performance would be speculative.

Why this product is good

  • I cannot verify specific features, reliability, or user satisfaction for this product without more context or firsthand testing
  • No independent reviews, benchmarks, or widespread user feedback are available to me for this specific tool
  • The name suggests it may relate to call/scheduling management, but I cannot confirm its actual functionality or quality

Recommended for

  • Users should visit the official website directly and check for reviews on platforms like G2, Trustpilot, or Capterra
  • Those considering this tool should request a demo or trial to evaluate it firsthand
  • Potential users should verify company legitimacy, customer support quality, and pricing transparency before committing

Overall verdict

  • Sing App React Java by Flatlogic is a solid, well-structured admin dashboard template that pairs a modern React frontend with a Java (Spring Boot) backend, making it a good choice for developers who want a ready-made full-stack starter kit rather than building an admin panel from scratch.

Why this product is good

  • Combines a React frontend with a Java/Spring Boot backend, giving a complete full-stack boilerplate out of the box
  • Includes pre-built UI components, charts, tables, and forms that speed up dashboard development
  • Clean and modern design that follows common admin panel UX patterns
  • Comes with authentication and basic CRUD operations already implemented
  • Good documentation and support from Flatlogic for setup and customization
  • Regularly maintained and updated to keep dependencies current
  • Affordable compared to hiring a developer to build a similar boilerplate from scratch

Recommended for

  • Developers who want a quick-start template for building admin panels or internal tools
  • Teams building SaaS products that need a Java backend paired with a React UI
  • Freelancers or agencies looking to speed up client project delivery with a pre-built dashboard
  • Startups wanting to prototype an admin interface without investing heavily in initial UI/UX design
  • Java developers who prefer Spring Boot but want a modern JavaScript frontend without building it themselves

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Callvent.app
Sing App React Java
100% 100%
Personal CRM
0% 0%
100% 100%
Call Management
0% 0%
100% 100%
Caller ID
0% 0%

Questions & Answers

As answered by people managing Callvent.app and Sing App React Java.

What's the story behind your product?

Callvent.app's answer

Callvent was built by mittl medien, an independent developer studio, out of a simple frustration: calls happen all day, but the details — what was agreed, who to call back, when — slip away the moment you hang up. The existing options meant opening a CRM or typing everything by hand. Callvent's idea was to make documenting a call as fast as dismissing a notification, and to keep the result in the calendar people already live in — on the device, not in someone else's cloud.

What makes your product unique?

Callvent.app's answer

Callvent turns every phone call into a calendar entry instead of a CRM record. When a call ends, it shows a notification with the duration, and one tap saves it to the calendar you already use — together with the contact, notes, tags, and a callback reminder. It detects incoming, outgoing, and missed calls automatically and also works with WhatsApp, FaceTime, Telegram, Signal, Microsoft Teams, Zoom, and any other CallKit app. Everything stays on the device: no account, no cloud sync, and no third-party analytics. It even runs standalone on Apple Watch and Wear OS.

Why should a person choose your product over its competitors?

Callvent.app's answer

Most alternatives are personal CRMs that ask you to keep records in a separate app and sync them to the cloud. Callvent is lighter: it logs calls into the calendar you already check every day, needs no account, and keeps all data on your device. You can document a call in about ten seconds straight from the post-call notification, set callback reminders, and organize calls with tags and notes — without the overhead or monthly lock-in of a CRM. Pricing is modest and includes a one-time Lifetime option, with native apps for iPhone, iPad, Apple Watch, Android, and Wear OS.

How would you describe the primary audience of your product?

Callvent.app's answer

People who make a lot of calls and need a record of them without running a full CRM: freelancers, consultants, sales and account managers, lawyers, real-estate agents, recruiters, and support staff. In short, anyone for whom "what did we discuss, and when do I follow up?" matters every day.

Which are the primary technologies used for building your product?

Callvent.app's answer

Callvent is built natively for each platform, with all processing on the device and no shared backend. - iPhone, iPad & Apple Watch: Swift and SwiftUI — CallKit for call detection, EventKit for calendar integration, WidgetKit for the home-screen widget, App Intents for Siri Shortcuts, WatchKit for the watch app, and StoreKit for subscriptions. - Android & Wear OS: Kotlin with Jetpack Compose (and Glance for widgets) — the Telephony APIs for call detection, CalendarContract for calendar integration, and Google Play Billing for purchases.

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