SEMBio vs WhenLog
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SEMBio
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Applicazione per il monitorgaggio delle centrali a Biomassa TLR/Elettrico
WhenLog
Monitor your online and offline time with this app. It tracks your usage patterns, providing detailed analysis and charts to help you understand how you spend your time online. Get insights into your digital habits and manage your time more effectively.
- Track online/offline status
- Monitor multiple numbers
- Analyze usage hours and durations
- Advanced charts and graphs
- 24/7 customer support
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Do you know how much time you spend online ? Do you know what time of the day you are online or offline ? How efficiently can you use your time ? Track the online status of your number with WhenLog. If you have more than one number you can add them too. Track the hours and durations of being online and offline. Find out and analyze your online status with advanced charts. Get support from our 24/7 customer service when you have a problem. Please, contact us via e-mail address for your questions and suggestions. E-Mail: support@whatlogapp.com Privacy Policy: whatlogapp.com/PrivacyPolicy.html Terms of Use: whatlogapp.com/TermsOfUse.html
Screenshots
Verdict
The clearest difference is in-app purchases: SEMBio at none against WhenLog's 10. WhenLog's advantage is update cadence (every 2 weeks vs every 36 months) and device support (3 vs 1). On price and ads 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. WhenLog sells 10 in-app purchases, starting at $1.99 per 7 days. SEMBio asks for nothing beyond the download.
SEMBio ships an update every 36 months, WhenLog every 2 weeks. The most recent releases landed on November 7, 2026 and November 13, 2026 respectively.
| Parameter | SEMBio | WhenLog |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.1 (2.5K ratings) — better |
| Positive reviews | — | 13.5% of reviews |
| Number of ratings | — | 2.5K — better |
| Update frequency | Every 36 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 16 MB | 27 MB |
| Age rating | 4+ | 4+ |
| Developer | iPlus Service S.r.l. | Alper Sahin |
Bugs and requests
SEMBio
Not enough reviews yet to summarise bugs or requests.
WhenLog
Reported bugs
3 issues- App crashes or freezes
- Inconsistent tracking and monitoring functionality
- Subscription issues and billing problems
Requested features
3 requests- Improved notification system
- More detailed reporting and analytics
- Compatibility with a wider range of devices
In-app purchases
SEMBio
No in-app purchases
WhenLog
- Weekly Subscription$1.997 Days
- Weekly Subscription 2$2.997 Days
- Weekly Subscription 1$3.497 Days
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- Weekly Subscription 3$3.997 Days
- Monthly Subscription$5.991 Month
- Monthly Subscription 2$8.991 Month
- Monthly Subscription 1$11.991 Month
- 3 Monthly Subscription$13.993 Months
- VIP Monthly Subscription 1$21.991 Month
- Three Monthly Subscription 2$23.993 Months







