NucleApp vs Calyn
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NucleApp
Create professional mobile apps without coding using a drag-and-drop interface and over 80 templates. This platform makes app development accessible to everyone, empowering you to bring your ideas to life.
- No-code app development
- Drag-and-drop interface
- 80+ app templates
- Screen builder
- App link creation
- Intuitive design
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What is NucleApp? NucleApp is a dynamic platform to build apps without the need for any programming/coding knowledge or technical skills. It helps users to create any type of app with simple and easy steps. It can create professional-level apps with equipped tools and can be used by any iOS, Web apps and other mobile platform apps for free. NucleApp has strong expertise from ‘SurveyHeart’ which is another successful company run by the Same Founder. With NucleApp, the world of app development becomes accessible to everyone. Empower your creativity and turn your ideas into reality with this revolutionary app creation platform. Start building your app today and unlock the limitless possibilities of mobile technology. Why NucleApp? Easy-to-use Interface: The interface is intuitive and easy to use. You don't need any technical skills to get started. Our app provides a clean and user-friendly interface that guides you through the entire app creation process. You can easily navigate through various sections and modules to build your desired app. Intuitive Drag-and-Drop Interface: NucleApp simplifies the app development process by providing a visual drag-and-drop interface. You can effortlessly design and arrange app screens, buttons, images, and other elements to create a stunning and professional-looking app. App Templates: Choose from a wide variety of pre-built 80+ app templates that cater to different industries and app types. These templates provide a solid foundation for your app and save you time in designing its basic structure. You can customize and personalize these templates according to your requirements. Discover our extensive collection of categorized pre-built app templates including Real estate, art & Fashion, Lifestyle & Wellness, Transportation, Content Creation, Reading & literature, organization & productivity, Education, Events & planning, communication & contacts, Cooking & Food, Sports, Technology & Design, Health & Wellness, Travel & Tourism, Business & Employment, News and Information, Shopping, Photography & Creativity and etc., Screen Builder: The screen builder typically provides a visual representation of the app screen or page being designed. It may resemble the final appearance of the app, allowing developers to see a real-time preview as they make changes. App Builder: The app builder provides the functionality to search the screens created by the user. With this feature, users can easily manage and navigate through their collection of screens by applying sorting options based on criteria such as screen name, creation date, or other relevant parameters. Additionally, users can utilize the search functionality to quickly find specific screens by entering keywords or filters, making it efficient to locate and work with the desired screens within the app builder. App Link Creation: After Publishing the app, it typically generates a unique link that serves as the access point for your app. This link can be shared with your users, friends, or potential customers, allowing them to easily access and install the app. The generated link serves as a gateway to your app and can be distributed through various channels. You can share the link via messaging apps, email, and social media platforms, or even embed it on your website. By sharing the link, you enable others to directly download and install your app on their devices. It also provides options to submit your app to official app stores. Preview: This feature provides a real-time representation of how the screen will look. This allows for immediate feedback and evaluation of the screen's appearance and functionality, enabling users to identify any necessary adjustments or refinements. Previewing the screen helps ensure a polished and user-friendly experience by allowing developers to iteratively fine-tune the design and achieve the desired look and feel before proceeding with further development or publishing the app.txt
Calyn
Effortlessly capture and organize your life's events. This intelligent assistant allows you to add appointments from photos, voice notes, or text, detect conflicts, and find free time. Streamline your schedule and reclaim your focus.
- Capture events from images, audio, or text
- Utilize templates for recurring routines
- Share events via extension from other apps
- Detect and resolve event conflicts
- Find and share available time slots
- Batch capture multiple events at once
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Welcome to Calyn calm. Snap a photo. Speak a note. Got a reminder, email, or text? Share it straight into Calyn. Find conflicts, schedule your priorities—no more mental juggling! Inspired by David Allen’s Getting Things Done (GTD) principles, Calyn helps you capture life as it happens—client meetings, class deadlines, soccer drop-offs—so your focus time goes to what matters most. KEY FEATURES • Snap Events – Add events from images, audio, or free text instantly. • Templates – Save time with templates for common routines, such as meal planning or after-school schedules. • Share Extension – Send events from email, messages, or photos directly to Calyn. • Conflict Detection – Spot and resolve overlapping events across all your calendars. • Find Free Time – Discover open slots and easily share your availability with others. • Batch Capture – Capture multiple events from a single message or image. WHO IT’S FOR • Busy families juggling pickups, appointments, and activities • Students managing syllabi, deadlines, and study time • Solopreneurs & small businesses balancing client work and personal priorities • Anyone starting fresh who wants to plan better weeks and build better habits Life captured, time reclaimed—that's Calyn calm. Privacy Policy: https://getcha.ai/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is rating: Calyn at 5.0 against NucleApp's 3.6. Calyn also leads on review sentiment (100% vs 69%) and update cadence (fortnightly vs every 3 months). NucleApp's advantage is in-app purchases (none vs 2) and ratings volume (13 vs 4). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Calyn sells 2 in-app purchases, starting at $4.99 per month. NucleApp asks for nothing beyond the download.
Calyn holds the better App Store score, 5.0 against 3.6. Both are backed by a comparable volume of ratings — 13 and 4 respectively. Written reviews point the same way: 69% of NucleApp's written reviews are positive against 100% of Calyn's.
NucleApp ships an update every 3 months, Calyn fortnightly. The most recent releases landed on September 10, 2026 and June 3, 2026 respectively.
| Parameter | NucleApp | Calyn |
|---|---|---|
| Price | Free | Free |
| Rating | 3.6 (13 ratings) | 5.0 (4 ratings) — better |
| Positive reviews | 69.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 13 — better | 4 |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.5 |
| Further details — not scored | ||
| Size | 104 MB | 22 MB |
| Age rating | 17+ | 4+ |
| Developer | NucleApp Software Private Limited | Chaai LLC |
Customer experience
NucleApp
Calyn
In-app purchases
NucleApp
No in-app purchases
Calyn
- Essential Plan$4.991 Month
- Pro Plan$9.991 Month









