# APPgrade34 Backend vs Appointment Booking System

The clearest difference is in-app purchases: APPgrade34 Backend at none against Appointment Booking System's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Appointment Booking System sells 2 in-app purchases, starting at $9.99 per month. APPgrade34 Backend asks for nothing beyond the download.

APPgrade34 Backend ships an update every 3 weeks, Appointment Booking System monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | APPgrade34 Backend | Appointment Booking System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (22 ratings)](https://appshunter.io/ios/app/appointment-booking-system/id1511163266/reviews)** |
| Number of ratings | — | **22** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Monetization | — | Freemium |
| Size | 13 MB | 71 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [APPgrade34 S.r.l.s.](https://appshunter.io/developer/1645351406) | [Dominique Andr Gunia](https://appshunter.io/developer/295407468) |

## What reviewers say

### APPgrade34 Backend

[App page](https://appshunter.io/ios/app/appgrade34-backend/id1333025637)

**Features:** macOS Compatibility

**In-app purchases:** none


### Appointment Booking System

[App page](https://appshunter.io/ios/app/appointment-booking-system/id1511163266)

Quickly create a customer booking website in minutes. Customers can view available slots and book appointments online. Receive instant notifications for new bookings.

**Highlights:** Quick setup, Customer booking website, Real-time notifications, Unlimited bookings (subscription), Free tier available

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $9.99 | per month |
| Yearly subscription | $99.99 | per year |


## Frequently asked questions

### Is APPgrade34 Backend free?

APPgrade34 Backend is free to download, with no in-app purchases.

### Is Appointment Booking System free?

Appointment Booking System is free to download, with in-app purchases available.

### Do APPgrade34 Backend or Appointment Booking System have ads?

Neither APPgrade34 Backend nor Appointment Booking System shows ads.

### Which is updated more often, APPgrade34 Backend or Appointment Booking System?

APPgrade34 Backend ships an update every 3 weeks, and Appointment Booking System monthly. Most recently, APPgrade34 Backend was updated on November 2, 2026 and Appointment Booking System on November 3, 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.*