Reubro Q&A - Recent questions

Why does the app produce an unexpected sound on a real device but work correctly on the iOS 26.5 simulator?

Fri, 11 Sep 2026 04:32:03 +0000

Hi Friends,

I am currently working on the app store applications that are designed to support vehicle maintenance and repair by pairing smart hardware sensors with real-time digital graphing, noise analysis, and data logging. By providing accurate visual data, these applications help replace traditional mechanical guesswork with precise and reliable information for vehicle diagnostics and repair.

As part of the current update, around seven applications have been added to the test list. During the testing process, I found that three applications are experiencing some issues that require further investigation.

Problem Identified

The MTS 1 and SS1 applications have been updated and tested using iOS 26.5 on the simulator with Xcode 26.6. Both applications are working correctly in the simulator, and I have not observed any issues during the simulator testing.

However, when the applications are installed and tested on a real physical device, they do not work as expected. The main issue is that the applications produce an unexpected or abnormal sound during operation. This sound does not occur when running the applications in the simulator.

Therefore, there is a difference in behavior between the simulator environment and the real device. Further investigation is required to identify the root cause of this issue and determine whether it is related to the iOS version, device configuration, hardware interaction, audio processing, or any other device-specific behavior.

Please feel free to share your thoughts, suggestions, or any ideas that might help identify the cause of this issue.

Thank you!

Need Advice on a Family Members Feature for My Health App

Wed, 05 Aug 2026 06:13:05 +0000

Hi Everyone,

I'm building a Personal Health Record (PHR) app using Flutter.

The main purpose of the app is to help individuals manage and track their own medical history in one place. Users can:

Store medical reports
Create consultation logs
Track medications and vaccinations
Organize health records
View health analytics

I'm trying to keep the app minimal, simple, and easy to use.

The feature I'm currently stuck on is the Family Members section.

I want users to be able to manage health records for their family members (parents, spouse, children, etc.), but I'm not sure what the best approach is.

Some ideas I have are:

A single user creates a family profile and stores everyone's health records under their own account.
Each family member has their own account and profile, and they can share their health records with another family member after giving explicit permission.
Another simpler approach that I'm not considering yet.

My concern is that if I implement account linking and record sharing, it will require multiple user accounts, authentication, sharing permissions, access control, and consent management. While this seems like the correct long-term solution, it also makes the app much more complex than I originally planned.

I'm also not sure whether implementing health record sharing between users could create any Privacy Policy, Terms & Conditions, or app review issues when publishing to the Google Play Store or Apple App Store, since it involves sharing sensitive personal health information.

On the other hand, if I simply let users create family member profiles under their own account (without separate accounts), the implementation stays simple and lightweight, but I'm not sure if this is the best design from a scalability and privacy perspective.

My goals are:

Keep the app simple and lightweight.
Avoid changing the current app flow too much.
Respect user privacy.
Keep the architecture flexible enough to support more advanced features in the future.

Has anyone implemented a similar feature in a Personal Health Record app or any other application?

I'd love to know which approach you chose, why you chose it, and whether there are any better alternatives that I should consider.

If anyone has implemented a similar feature before or has experience designing a Personal Health Record or family health management app, I'd really appreciate your suggestions.

Please feel free to share your thoughts or ideas.

Thank you!

High Database Query Execution Time During Concurrent Tournament Load

Mon, 03 Aug 2026 02:41:39 +0000

We are experiencing a performance issue in a Core PHP-based tournament management application during periods of high concurrent activity.

Environment

Application: Core PHP
Database: MySQL
Hosting: cPanel Shared Hosting
Web Server: Apache
Application Type: Online Tournament Management System

Issue

When multiple tournaments are running simultaneously, the application becomes noticeably slow. Users experience delayed page loads and slower responses, particularly on tournament-related pages.

After reviewing the server resource usage metrics in cPanel, I found that:

CPU usage remained within acceptable limits.
Memory usage was normal.
No significant server resource exhaustion was observed.
However, the Database Query Snapshot showed several SQL queries taking 12–20 seconds to execute.

Most of these slow queries are related to tournament statistics, such as retrieving winners, losers, player counts, rankings, and leaderboard data while multiple tournaments are active.

Findings

The server itself does not appear to be overloaded. Instead, the performance degradation seems to originate from the database layer.

The issue occurs only during periods of heavy concurrent tournament activity, suggesting that the application is spending considerable time waiting for database queries to complete.

Possible Causes

I suspect one or more of the following:

Missing or inefficient database indexes
Poorly optimized SQL queries
Expensive JOIN, GROUP BY, ORDER BY, or COUNT() operations
Full table scans on large tournament tables
Repeated execution of identical queries
Database locking/contention due to concurrent reads and writes
Lack of caching for frequently accessed tournament statistics

Assistance Required

I would appreciate guidance on the following:

How to identify and optimize slow MySQL queries.
Best practices for indexing tournament-related tables.
Methods to analyze query execution plans using EXPLAIN.
Techniques to optimize aggregate queries involving COUNT(), GROUP BY, and multiple joins.
Strategies to improve database performance during high concurrent load.
Recommendations for caching leaderboard or tournament statistics.
General performance optimization techniques for large-scale Core PHP applications.

Current Status

The application performs normally under regular traffic. The slowdown is only observed when multiple tournaments are running concurrently, indicating that the primary bottleneck is likely database query performance rather than CPU, memory, or other server resources.

Any suggestions for query optimization, indexing strategies, or database tuning would be greatly appreciated.

Can AI created images be used to create professional websites?

Tue, 13 Jan 2026 11:37:00 +0000

Homepage layout is broken in WordPress (Elementor) – Need solution

Tue, 13 Jan 2026 08:54:04 +0000

The homepage is currently not rendering properly and appears broken. The layout is misaligned and some sections are not loading or displaying as expected. The site is built using WordPress with the Elementor plugin.

We need to identify the root cause of this issue and fix it. Possible reasons could be plugin conflicts, theme compatibility problems, recent updates, cache issues, or corrupted Elementor files/templates.

Please analyze the issue and suggest:

Why this problem is occurring
How to fix it
What checks should be done to prevent this in the future

This needs to be resolved on priority as it directly affects the user experience and site appearance