MySQL QueryDB Client vs Customer Database
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MySQL QueryDB Client
Remotely query MySQL and MariaDB databases from your mobile device. Optimized for unreliable networks, it handles large tables and supports Siri Shortcuts for efficient data access and export.
- Parameterized queries
- Optimized for low-quality networks
- Query-oriented workflow
- Siri Shortcuts integration
- Unicode support
- iCloud synchronization
- CSV export
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No account registration! No e-mail harvesting! No spam! QueryDB has spent over 15 years helping developers remotely query their MySQL databases on iOS. It's not just a desktop port: it handles flakey cellular network connections and delivering your data wherever you are! • Integrated UI support for parameterized queries • Optimized to run queries over low quality network connections. • Does not maintain persistent connections to your database • Automatically windows data requests to prevent client overload when querying large tables. • Support for MPTCP for seamless network transitions between Wifi and cellular networks (SSH server and routers must also support) • Query oriented workflow. • Run queries with minimal steps. • Run the same queries across different environments (e.g. prod, staging, dev). • Support for Siri Shortcuts for both UI and scripting purposes • Unicode support. • Automatically sets to default database charset. • iCloud support • Easily synchronize servers and queries across all your devices. • CSV export through iOS extensions • Easily export data to Numbers, Files, and other sharing extensions that support CSV. • Premium/Paid support for SSL connections and SSH tunneling Comprehensive MySQL version support: Versions 4,x, 5.x, and 8.x, Amazon Aurora, Google SQL, MariaDB. QueryDB was first introduced on iOS 6 and has constantly been revised to keep up with iOS, iPad, MySQL, and SSH revisions. It currently works all the way back to iOS 9 and MySQL 5.x, up through iOS 13 and MySQL 8.x. On top of an 13 year record, it continues to offer features absent from others like parameterized queries, Siri shortcuts. For the past 13 years, we've only charged for Ad removal and SSH support, leaving basics like un-encrypted db access and CSV export available for free. Our hope is to continue offering basic access for free while charging a nominal fee to others who would use it in a professional capacity. However, the increasing combinations of iOS, iPadOS, watchOS, SSH/SSL, and MySQL versions have substantially increased the burden of development, maintenance, and testing. To help keep up with the pace of change, we're switching to a one-time fee for all features with support for subscriptions at a later date. As a thank you to all users who purchased the Remove Ads option, they'll all be grandfathered into the new Premium tier (it will use the same in-app purchase product). From this version on, the one-time premium purchase will match the price of the MySQL QueryDB SSH product since they're identical. In-App Feedback Testimonials: "This App is EXACTLY what I was looking for. Congrats! It shouldn’t be free. ;)" "Works dope for my inventory needs. Thanks homies" "Splendid No fuss Simple Effective Works straighforward Thank You"
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.
- Secure customer management
- MySQL server sync
- GDPR tools
- Customer grouping and birthdays
- Newsletter creation
- VCF/CSV import/export
- Incoming call identification
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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
Screenshots
Verdict
The clearest difference is ads: Customer Database at none against MySQL QueryDB Client's shown. Customer Database also leads on iOS requirement (13.0 vs 15.0). MySQL QueryDB Client's advantage is review sentiment (77% vs 58%). On price, rating, ratings volume and update cadence 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
Both are free to download. MySQL QueryDB Client sells 1 one-off in-app purchase and Customer Database sells 8 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.
Customer Database holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 103 and 47 respectively. Written reviews complicate that: 77% of MySQL QueryDB Client's written reviews are positive against 58% of Customer Database's, so the app with the better star average is not the one people write more warmly about.
MySQL QueryDB Client ships an update every 5 weeks, Customer Database every 3 weeks. The most recent releases landed on September 5, 2026 and September 26, 2026 respectively.
| Parameter | MySQL QueryDB Client | Customer Database |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (103 ratings) | 4.6 (47 ratings) — better |
| Positive reviews | 76.5% of reviews — better | 58.3% of reviews |
| Number of ratings | 103 — better | 47 |
| Update frequency | Every 5 weeks | Every 3 weeks — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 28 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Excelsis Consulting | Georg Sieber |
Customer experience
MySQL QueryDB Client
Customer Database
In-app purchases
MySQL QueryDB Client
- Premium$9.99
Customer Database
- Cloud Access License$1.991 Month
- Design Options$1.99
- Commercial Usage$4.99
- Custom Fields$4.99
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- Input-Only Mode & App Lock$4.99
- Calendar$4.99
- Files$5.99
- More than 500 Customers$8.99





