# SEMBio vs WhenLog

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.

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.

## The numbers

| Metric | SEMBio | WhenLog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (2.5K ratings)](https://appshunter.io/ios/app/whenlog-online-tracker/id1563635644/reviews)** |
| Number of ratings | — | **2.5K** |
| Positive reviews | — | 13.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 2 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 16 MB | 27 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iPlus Service S.r.l.](https://appshunter.io/developer/438506659) | [Alper Sahin](https://appshunter.io/developer/1563636126) |

## What reviewers say

### SEMBio

[App page](https://appshunter.io/ios/app/sembio/id1539175950)

**Features:** Vision Pro support

**In-app purchases:** none


### WhenLog

[App page](https://appshunter.io/ios/app/whenlog-online-tracker/id1563635644)

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.

**Highlights:** Track online/offline status, Monitor multiple numbers, Analyze usage hours and durations, Advanced charts and graphs, 24/7 customer support

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $1.99 | per 7 days |
| Weekly Subscription 2 | $2.99 | per 7 days |
| Weekly Subscription 1 | $3.49 | per 7 days |
| Weekly Subscription 3 | $3.99 | per 7 days |
| Monthly Subscription | $5.99 | per month |
| Monthly Subscription 2 | $8.99 | per month |
| Monthly Subscription 1 | $11.99 | per month |
| 3 Monthly Subscription | $13.99 | per 3 months |
| VIP Monthly Subscription 1 | $21.99 | per month |
| Three Monthly Subscription 2 | $23.99 | per 3 months |

**What reviewers like**

- 🚀 Excellent tracking and monitoring capabilities
- 👍 User-friendly interface
- 🔒 Secure and reliable service

**What reviewers complain about**

- 🐛 App not working as expected
- ⚠️ Poor customer support and lack of communication
- 💰 Paid service not providing value for money

**Reported bugs**

- App crashes or freezes
- Inconsistent tracking and monitoring functionality
- Subscription issues and billing problems

**Requested features**

- Improved notification system
- More detailed reporting and analytics
- Compatibility with a wider range of devices


## Frequently asked questions

### Is SEMBio free?

SEMBio is free to download, with no in-app purchases.

### Is WhenLog free?

WhenLog is free to download, with in-app purchases available.

### Do SEMBio or WhenLog have ads?

Neither SEMBio nor WhenLog shows ads.

### Which is updated more often, SEMBio or WhenLog?

SEMBio ships an update every 36 months, and WhenLog every 2 weeks. Most recently, SEMBio was updated on November 7, 2026 and WhenLog on November 13, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*