Prezence is a native iOS focus app built by Mobilions to help people stay off distracting apps during deep-work and study windows. It pairs timed focus sessions with app and category blocking, a live countdown timer, and an NFC tag unlock that adds a deliberate, physical step to ending a session early.
What Prezence is and what Mobilions built.
Prezence is a focus and screen-time companion for iOS. The core idea is simple: a user starts a timed focus session, and during that session the apps and categories they want to avoid are blocked, keeping their attention on the task in front of them.
Mobilions built Prezence as a native iOS application in Swift. The feature set centers on four capabilities — timed focus sessions, app and category blocking, NFC tag unlock, and a live countdown timer — that together turn "I want to focus" into an enforced, time-boxed routine on the device.
The NFC tag unlock is the differentiating detail. Rather than letting a user tap away a block with a single button, ending or bypassing a session requires scanning a physical NFC tag, adding friction that discourages impulsive unlocking.
Key facts about the product and engagement.
Fitness / Health (Health & Fitness category)
iOS (native, Swift)
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The services Mobilions provided to build this app.
The core technologies behind the app.
The problem space this app addresses.
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How a focus app like this is typically built.
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Notable build choices for this app.
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Why the stack fits this kind of app.
Swift is the native language for iOS, giving direct access to the platform's screen-time, restriction, and Core NFC APIs that a blocking-and-unlock app of this type depends on.
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The app's core capabilities, as delivered.
Users start a focus session for a set duration. The session defines the window during which distractions are held back, turning an intention to focus into a concrete, time-boxed block.
During a session, selected apps and whole categories of apps are blocked on the device, so the most common sources of distraction are unavailable until the session ends.
Ending or bypassing a session requires scanning a physical NFC tag. The extra physical step adds intentional friction, making it harder to abandon focus on impulse.
A live countdown shows how much focus time remains, giving the user constant, at-a-glance feedback on their progress through the session.
Technical notes on the build.
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A look at the product across screens.
If you need a focus, screen-time or device-restriction app with app blocking, timed sessions and NFC, let us show you how we would build it.
Mobilions' clients describe fast delivery, clear communication, and senior, trustworthy engineering—in their own words.
Great experience working with this team. They completed the development work quickly and efficiently without wasting time. Communication was clear and consistent, they understood the requirements well, gave smart suggestions, and delivered exactly as discussed. I'd highly recommend them to anyone looking for a reliable, fast, and skilled app development team.
We worked with Ankit, Mayur, and Tushar to build the first version of Baba Hebrew for iOS and Android, and they delivered super fast. The team was responsive, reliable, and efficient, taking the idea from zero to a working app in record time. I'd recommend them to anyone who wants to get an MVP live quickly.
Tushar and Ankit did an outstanding job developing our native iOS (Swift) and Android (Kotlin) apps. They were efficient, responsive, and technically strong throughout. Thanks to their work, we launched successfully and gained over 1,000 users in the first 30 days. Highly recommend this team for quality mobile app development.
It was a wonderful experience working with Tushar, Ankit, and their team. They built a great mobile app for me and truly brought my vision to life. What stood out was not just their technical skill but their attitude: always positive, solution-oriented, and incredibly patient. They went above and beyond at every step, finding creative workarounds and staying committed even when things got challenging. Extremely professional and trustworthy. I would absolutely hire them again.
Great experience working with this team. They completed the development work quickly and efficiently without wasting time. Communication was clear and consistent, they understood the requirements well, gave smart suggestions, and delivered exactly as discussed. I'd highly recommend them to anyone looking for a reliable, fast, and skilled app development team.
We worked with Ankit, Mayur, and Tushar to build the first version of Baba Hebrew for iOS and Android, and they delivered super fast. The team was responsive, reliable, and efficient, taking the idea from zero to a working app in record time. I'd recommend them to anyone who wants to get an MVP live quickly.
Tushar and Ankit did an outstanding job developing our native iOS (Swift) and Android (Kotlin) apps. They were efficient, responsive, and technically strong throughout. Thanks to their work, we launched successfully and gained over 1,000 users in the first 30 days. Highly recommend this team for quality mobile app development.
It was a wonderful experience working with Tushar, Ankit, and their team. They built a great mobile app for me and truly brought my vision to life. What stood out was not just their technical skill but their attitude: always positive, solution-oriented, and incredibly patient. They went above and beyond at every step, finding creative workarounds and staying committed even when things got challenging. Extremely professional and trustworthy. I would absolutely hire them again.
Common questions about building a focus or screen-time app.
It depends on scope. A focused MVP with timed sessions and basic blocking is faster to ship than a full product with NFC unlock, scheduling, and analytics. We scope a timeline after a short discovery call once your must-have features are clear.
Yes, within Apple's rules. iOS exposes screen-time and restriction capabilities that let an app limit selected apps and categories. The exact behavior is governed by Apple's frameworks and review guidelines, which we design around from the start.
An NFC tag adds a deliberate physical step to ending a session. That friction discourages impulsive unlocking, which is often the point of a focus tool. It is one of several "commitment" mechanisms we can build, alongside delays or confirmations.
Apps that lean heavily on device-level capabilities like app blocking and NFC are usually best built native, where access to the relevant platform APIs is most direct. We will recommend an approach based on your features and target platforms.
Cost tracks scope, platforms, and integrations. We give a written estimate after discovery so you see the cost against a specific feature set rather than a generic range.
Yes. Monetization such as subscriptions, paid tiers, or premium features can be designed in from launch or added later. We will flag the implications for your store listing and architecture early.
Yes. We support preparing the build, metadata, and privacy details, and we design features to align with Apple's review guidelines so submission goes smoothly.
Yes. We regularly pick up from a concept, a feature list, or an existing codebase, assess what is there, and continue the build from that point.
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