# Zetlog vs Simple Appointment App

The clearest difference is review sentiment: Simple Appointment App at 65% against Zetlog's 15%. Simple Appointment App also leads on rating (5.0 vs 2.8) and iOS requirement (15.1 vs 17.4). Zetlog's advantage is ratings volume (15 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Zetlog sells 8 in-app purchases, starting at $2.99 per 7 days and Simple Appointment App sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

Simple Appointment App holds the better App Store score, 5.0 against 2.8. That said, the two scores are not equally well evidenced: Zetlog has 15 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 15% of Zetlog's written reviews are positive against 65% of Simple Appointment App's.

Zetlog ships an update every 3 weeks, Simple Appointment App every 11 days. The most recent releases landed on October 8, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Zetlog | Simple Appointment App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (15 ratings)](https://appshunter.io/ios/app/zetlog-online-tracker/id6445889775/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/simple-appointment-app/id6451069138/reviews)** |
| Number of ratings | **15** | 1 |
| Positive reviews | 15.4% of reviews | **65.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 11 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 47 MB | 42 MB |
| Requires iOS | 17.4 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [SUPERSKY APPS LIMITED](https://appshunter.io/developer/1625601592) | [Mert Can TASKIN](https://appshunter.io/developer/1716262900) |

## What reviewers say

### Zetlog

[App page](https://appshunter.io/ios/app/zetlog-online-tracker/id6445889775)

This app allows you to monitor your online activity and track when contacts go online or offline. It functions as an activity monitor for your digital presence. Review the terms and privacy policy for usage details.

**Highlights:** Monitor online activity, Track online status, Track offline status, Activity monitoring, Status tracking

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Weekly 3 | $4.99 | per 7 days |
| Weekly 5 | $6.99 | per 7 days |
| Monthly | $8.99 | per month |
| Monthly 3 | $14.99 | per month |
| Monthly 5 | $19.99 | per month |
| Extra 1 Number | $2.99 | one-time |
| Extra 2 Numbers | $3.99 | one-time |


### Simple Appointment App

[App page](https://appshunter.io/ios/app/simple-appointment-app/id6451069138)

Manage client appointments and schedules with ease. This app allows businesses and solo professionals to create customer lists, set staff availability, and track appointments. Customers can also book directly through the app, streamlining the entire process.

**Highlights:** Create customer lists, Manage multiple staff members, Set service and working hours, Customer self-booking, Appointment notifications, Income and appointment management

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Aylık | $12.99 | per month |
| Pro 6 Aylık | $69.99 | per 6 months |


## Frequently asked questions

### Is Zetlog free?

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

### Is Simple Appointment App free?

Simple Appointment App is free to download, with in-app purchases available.

### Which has better reviews, Zetlog or Simple Appointment App?

Simple Appointment App is rated higher. Zetlog averages 2.8 out of 5 from 15 ratings, while Simple Appointment App averages 5.0 from 1 ratings.

### Do Zetlog or Simple Appointment App have ads?

Neither Zetlog nor Simple Appointment App shows ads.

### Which is updated more often, Zetlog or Simple Appointment App?

Zetlog ships an update every 3 weeks, and Simple Appointment App every 11 days. Most recently, Zetlog was updated on October 8, 2026 and Simple Appointment App on October 9, 2026.

---

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