Serea Smart Lock vs Lineár Calendar
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Serea Smart Lock
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Replacing your physical keys, the Serea app is your digital platform to operate, manage and share your Serea lock. Simply register for free and log in into your account to either add a lock, share your lock or receive access to the lock of friend or family member. With Serea, this is all done in one place. Serea relies on the reliability and safety of Near Field Communication (NFC). With this technology, you can unlock your Serea lock without any physical key. Next to that, the app uses the NFC technology to transmit a small pulse of energy to open the lock, meaning that your lock does not require any battery. Features: - Pair and manage your lock - Share your lock with anyone for as long as you want - Offline feature – even if you have no internet connection, you can still open your lock - Track the locations where you have opened the lock (optional) - Your digital key safely secured via a cryptographic technology The Serea App is programmed in the heart of Europe: Austria. By using high security standards, while respecting our user’s privacy, we created a platform with the sole purpose of making it easier to lock your bicycle, scooter or anything you want. This app programmed and tested to work on iOS Version 12 or later. Please make sure your smartphone has an integrated NFC chip.
Lineár Calendar
Visualize your entire year in a single, elegant view. This app offers multiple perspectives and customization options to help you spot busy periods and find gaps instantly. Plan more effectively by seeing the bigger picture of your schedule.
- Full year view
- Horizontal and vertical layouts
- Linear and regular day alignments
- Coloured event bars
- Calendar filtering and custom colours
- Sticky header/column
- PDF export
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Zoom Out. See the Bigger Picture. Lineár shows your whole year in a single view: all 365 days at once. Spot busy stretches, find free time, and see how everything fits without flipping through months. Events appear as coloured bars across the days they span. Tap any one for the details. Four Ways to See Your Year Horizontal (months as rows) or vertical (months as columns, like a wall planner), each with two day arrangements: - Linear: days align by weekday, so overloaded days stand out. - Regular: days align by date (1–31), every month's 1st in the same column. Edit Right on Your Calendar (New in 2.0) Create, edit, and delete events without leaving Lineár: times, locations, notes, reminders, and full repeating events. Your first 10 edits are free. Lineár Pro then unlocks unlimited editing as a one-time purchase, no subscription. Viewing always stays free. Make It Yours Works with iCloud, Google, Exchange, and subscribed calendars in their own colours. Show, hide, and reorder calendars with a tap. Customise colours, fonts, and layout, pin the header or left column while scrolling, and filter events for a cleaner view. Export to PDF or print on Mac. Features - Whole year in one view, horizontal or vertical - Linear (weekday) and Regular (date) modes - Coloured event bars, filters, and custom colours - Create, edit, and delete events, repeats included (Lineár Pro) - Sticky header and left column - PDF export and printing (macOS) - iCloud, Google, Exchange, and subscribed calendars - Dark mode
Screenshots
Verdict
The clearest difference is in-app purchases: Serea Smart Lock at none against Lineár Calendar's 1. Serea Smart Lock also leads on iOS requirement (15.0 vs 17.0). Lineár Calendar's advantage is update cadence (every 10 days vs every 3 months). 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. Lineár Calendar sells 1 one-off in-app purchase. Serea Smart Lock asks for nothing beyond the download.
Serea Smart Lock ships an update every 3 months, Lineár Calendar every 10 days. The most recent releases landed on September 9, 2026 and August 10, 2026 respectively.
| Parameter | Serea Smart Lock | Lineár Calendar |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.0 (3 ratings) — better |
| Positive reviews | — | 95.8% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, Mac — better |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 62 MB | 5 MB |
| Age rating | 4+ | 4+ |
| Developer | PEWAG | TheMM |
In-app purchases
Serea Smart Lock
No in-app purchases
Lineár Calendar
- Lineár Pro$4.99
Questions
Is Serea Smart Lock free?
Is Lineár Calendar free?
Do Serea Smart Lock or Lineár Calendar have ads?
Which is updated more often, Serea Smart Lock or Lineár Calendar?
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