Comparison

Customer Database vs LogBook Visitor Log

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

Head to head
About

Customer Database

Manage customer information securely on your mobile device, separate from personal contacts. Sync data with a MySQL server for backup and multi-device access. Includes GDPR tools, customer grouping, birthday management, and newsletter capabilities.

Highlights
  • Secure customer management
  • MySQL server sync
  • GDPR tools
  • Customer grouping and birthdays
  • Newsletter creation
  • VCF/CSV import/export
  • Incoming call identification
Features
Read full description

This simple customer database application is designed for small companies for easy and secure customer management on smartphones and tablets, separated from private contacts. It is possible to sync your data with a (self-hosted) MySQL server to prevent loss or defect of your mobile device. This also allows to sync the data with multiple devices. In addition to that, it has tools for the EU-GDPR and you can group customers, manage customers birthdays and vouchers, write newsletters, import customers from VCF files and export your data into VCF or CSV files. Additionally, this app adapts the Dark Mode and has the ability to save customer images. The app shows the names of people saved in the customer database for incoming calls if you activate this in the iOS settings under "Phone" -> "Block and identify calls". Because of its high flexibility, the application is also often used in non-enterprise areas, such as teachers' management of parent contact information. Additional features that can be unlocked via in-app purchase: -> Custom Fields: also drop down selection lists and sorting by these fields is supported. -> "Input-Only-Mode": Optional activatable mode that allows only data entry. For example, the device can be handed to showroom visitors. -> Calendar: Manage customer appointments. Customers can insert the appointment directly into their calendar using a QR code. -> File Attachments: Attach up to 20 files to a customer. -> Design Options: Allows you to set your own title bar color. Terms of Use for the Sync Feature: https://georg-sieber.de/?page=app-customerdb-terms This app is Open Source: https://github.com/schorschii/customerdb-ios

About

LogBook Visitor Log

Features
Read full description

It is critically important to keep track of visitors to your facitlity. Sentinel is a powerful tool that allows mobile tablets to be provisioned for guest self-registration or for employee escort sign in. REGISTER Register guests in a snap. No more paper to worry with. Snap a photo, get relevant information and they are in the system. VIEW Sentinel gives you the ability to see everyone signed into your facility. Easily sort and search the database for visitors LOCATE Locate and monitor visitor locations in a snap. Have more safety and security with Sentinel at the door. Within any industrial facility, it is critically important to keep track of visitors. Not only for their own safety but for the safety and security of your business. In the past and often today, visitor logs consist of paper on clipboards. But organizations are under pressure to maintain better visitor records. Now with LogBook Sentinel you can utilize mobile technology to register, track and locate guests at your facility. Sentinel is a powerful tool that is easy to implement and easy to use. Sentinel allows mobile tablets to be provisioned for guest self-registration or for employee escort sign in. Once the data is entered into Sentinel, the data syncs directly into LogBook where it is stored permanently and can be easily accessed for safety, security or compliance audits. Do you have multiple entry and exit points? Sentinel has all of your doors covered. It knows when and where guests entered and where they are now. It even takes a photo of your guest for quick identification.

Screenshots

Customer Database4 screens

Verdict

The call

The clearest difference is in-app purchases: LogBook Visitor Log at none against Customer Database's 8. Customer Database's advantage is update cadence (every 3 weeks vs every 40 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Customer Database sells 8 in-app purchases, starting at $1.99 per month. LogBook Visitor Log asks for nothing beyond the download.

UpkeepUpdate frequency

Customer Database ships an update every 3 weeks, LogBook Visitor Log every 40 months. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

Scorecard4 real differences · 6 level
Customer Database versus LogBook Visitor Log: the parameters behind the verdict, then further details
ParameterCustomer DatabaseLogBook Visitor Log
PriceFreeFree
Rating4.6 (47 ratings) — better—
Positive reviews58.3% of reviews—
Number of ratings47 — better—
Update frequencyEvery 3 weeks — betterEvery 40 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPad
Requires iOS13.0 — better15.5.0
Further details — not scored
Size3 MB25 MB
Age rating4+4+
DeveloperGeorg SieberDoozer Software, Inc.

In-app purchases

8 purchases

Customer Database

Subscriptions1
  • Cloud Access License$1.991 Month
One-time7
  • Design Options$1.99
  • Commercial Usage$4.99
  • Custom Fields$4.99
Show 4 more
  • Input-Only Mode & App Lock$4.99
  • Calendar$4.99
  • Files$5.99
  • More than 500 Customers$8.99
None

LogBook Visitor Log

No in-app purchases

Questions

Is Customer Database free?
Customer Database is free to download, with in-app purchases available.
Is LogBook Visitor Log free?
LogBook Visitor Log is free to download, with no in-app purchases.
Do Customer Database or LogBook Visitor Log have ads?
Neither Customer Database nor LogBook Visitor Log shows ads.
Which is updated more often, Customer Database or LogBook Visitor Log?
Customer Database ships an update every 3 weeks, and LogBook Visitor Log every 40 months. Most recently, Customer Database was updated on October 12, 2026 and LogBook Visitor Log on September 30, 2026.

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