ZKBioTime vs Blue
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ZKBioTime
This real-time attendance app allows employees to clock in with location data and manage requests. It provides announcements and reports, with configurable administrator and employee access levels. Ideal for businesses with mobile workforces.
- Real-time clock-in with GPS
- Employee request management
- Announcements and reports
- Configurable user levels
- Online notifications
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ZKBioTime is a real-time attendance mobile application connected to the web-based time attendance software - BioTime. It's features included clocking-in with geographic location details, raising and approval of employee requests, announcements, reports, and online notifications. Administrator and employee levels can be configured from the webserver. ZKBioTime offers convenience and efficiency to industries that have employees who are always on-the-go. Employees who are going for training, business meetings, site visits, etc. can report their attendance wherever they are just by using their smartphones.
Blue
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BlueC is the official mobile app of the Blue Carbon (Blue-C) project, dedicated to protecting and restoring the seagrass meadows and blue carbon ecosystems of the Black Sea. Seagrass meadows are among the planet's most powerful natural carbon sinks. Although they cover less than 0.5% of the sea bed, they account for a large share of the carbon stored in ocean sediments. The Blue-C project works to map, monitor, and conserve these vital habitats through science, education, and regional cooperation. WHAT YOU CAN DO IN THE APP • Explore the project — Learn about the Blue Carbon Project, its goals, and main activities. • Meet the partners — Discover the universities and institutions working together across the Black Sea region. • Watch educational videos — Stream the Black Sea Conservation Education Programme (BCEP) video series. • Watch offline — Download videos to your device and watch them anytime, without an internet connection. • Access project tools — Reach resources such as the Marine Litter Watch platform, the Seagrass Simulation Model, and the Online Education Programme. WHY IT MATTERS Blue carbon habitats help fight climate change, support biodiversity, and protect coastlines. By making this knowledge accessible, BlueC helps students, educators, researchers, and citizens understand and protect the Black Sea. ABOUT THE PROJECT The Blue-C project is co-funded by the European Union under the Interreg NEXT programme, bringing together partners from across the Black Sea basin to advance marine conservation, monitoring, and education. Learn more at blue-c.org
Screenshots
Verdict
The clearest difference is iOS requirement: ZKBioTime at 13.0 against Blue's 15.6. On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
ZKBioTime ships an update every 3 months, Blue every 2 months. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | ZKBioTime | Blue |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (5 ratings) — better | — |
| Positive reviews | 13.6% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 13.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 22 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | ZKTECO SECURITY LLC | mustafa elgezen |
In-app purchases
ZKBioTime
No in-app purchases
Blue
No in-app purchases
