Comparison

eRoomManager vs Appointment Booking System

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

eRoomManager

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Resource Booking System is designed for all-size of organizations to ensure meeting rooms or facilities are fairly booked amount users and achieve best utilization. The system stands out by user-friendly interface, check-in / check-out and policies enforcement functions to avoid abuse of use as well as reporting for utilization analysis or security audit.eRoom Manager is a mobile app of the System to support end users schedule meeting, book resources on the road. Features: - Calendar for manage meetings schedule and invitation - Check rooms / resources availability - Book and cancel room / resource - Room / Resource Check-in / Check-out

About

Appointment Booking System

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
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Using this app you can quickly set up a booking system to accept bookings from your customers by answering a few questions. It takes only a few minutes. Afterward, you will have a link to a website that you can send to your customers. On that website they can see where you have free appointment slots and can book them. When one of your customers books an appointment, you will immediately receive a notification, and you can optionally also receive an email. You can use this app for free for booking up to 20 hours per month. If you would like to have an unlimited number of bookings each month, you can subscribe: Monthly subscription: With this subscription you can use the app for an unlimited number of bookings each month. $1.99 for each of the first 2 months, then $9.99/month. The subscription will automatically renew until you cancel it. You can manage your subscriptions in the App Store app. You can find the Terms of Use here: https://www.calengoo.com/bookingsystem/impressum.html

Screenshots

Appointment Booking System4 screens

Verdict

The call

The clearest difference is in-app purchases: eRoomManager at none against Appointment Booking System's 2. eRoomManager also leads on update cadence (fortnightly vs monthly). Appointment Booking System's advantage is device support (3 vs 1). On price, ads and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

eRoomManager ships an update fortnightly, Appointment Booking System monthly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 7 level
eRoomManager versus Appointment Booking System: the parameters behind the verdict, then further details
ParametereRoomManagerAppointment Booking System
PriceFreeFree
Rating—4.5 (22 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—22 — better
Update frequencyFortnightly — betterMonthly
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPadiPhone, iPad, iPod — better
Requires iOS11.4 — better12.0
Further details — not scored
Size19 MB71 MB
Age rating4+4+
DeveloperTrusted Systems LimitedDominique Andr Gunia

In-app purchases

None

eRoomManager

No in-app purchases

2 purchases

Appointment Booking System

Subscriptions2
  • Monthly subscription1 Month trial$9.991 Month
  • Yearly subscription2 Months trial$99.991 Year

Questions

Is eRoomManager free?
eRoomManager 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 eRoomManager or Appointment Booking System have ads?
Neither eRoomManager nor Appointment Booking System shows ads.
Which is updated more often, eRoomManager or Appointment Booking System?
eRoomManager ships an update fortnightly, and Appointment Booking System monthly. Most recently, eRoomManager was updated on October 26, 2026 and Appointment Booking System on October 27, 2026.

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