BackCallRecorderPro: Phone Call Recording App
CallRecorderPro has passed 7.5 million downloads on the App Store, holding a 4.8 rating across more than 20,500 reviews. The app records audio and video calls, captures screen activity during a call, and stores everything under cloud-backed encryption. Our client came to Space-O Technologies for mobile app maintenance after the product was already live on both stores. We took the project over from a previous vendor, handling the full transfer of API integrations, store accounts, domains, and developer accounts. Since then, we have cleared bugs, shipped security patches, resolved deprecated dependencies, and brought the app back to current operating system compatibility.
7.5M+
Downloads on the App Store
4.8
App Store Rating
20,500+
User Reviews Submitted
About the CallRecorderPro App
CallRecorderPro captures video and audio conversations, then organizes them so users can find any recording later. Professionals and entrepreneurs use it for confidential client and work calls. It also serves ordinary personal use where a conversation is worth keeping.
Screen recording sits alongside call capture. If a presentation is shared during a call, users record the screen rather than relying on memory or notes afterward. Recording duration carries no limit across audio, video, or screen formats.
Cloud-based security protects stored conversations against data breaches. The app also complies with global legal standards through automated disclaimers that establish two-party consent, so both people on a call know recording is taking place.
How We Stabilized and Scaled the Call
Recording App
Our client operates a waste management and energy efficiency agency across the USA and Canada. CallRecorderPro was a move into the utility market, and by the time we were engaged, it was already live with a substantial user base. The brief was to maintain the app and scale it for continued growth.
Project Takeover and Asset Transfer
Requirement:
The app was moving from a third-party vendor, and every account, integration, and credential had to change hands without interrupting live users.
Solution:
We managed the complete data transfer as the first phase of the engagement. That covered API integrations, App Store and Google Play accounts, domain transfers, and Apple developer accounts. Handovers are where live products break, so the transfer was completed before any development work began.
Bug Resolution and Security Patching
Requirement:
The client wanted immediate stabilization rather than a long analysis phase before anything visible improved.
Solution:
We began by clearing bugs and deploying critical security patch updates. An app holding recorded conversations carries a higher security burden than most utilities, so patches took priority over feature work. Users saw stability improvements while the deeper analysis was still underway.
Dependency and Compatibility Audit
Requirement:
The app had accumulated technical debt over its lifetime, and the extent of it was unknown at handover.
Solution:
We ran a thorough analysis of the app’s current state across both platforms. The audit surfaced several deprecated packages and compatibility issues with current systems. Each finding was documented and prioritized, which turned an unclear inherited codebase into a defined and workable backlog.
Version Upgrades and OS Compatibility
Requirement:
Deprecated packages and outdated operating system support threatened functionality for users on newer devices.
Solution:
Our team worked through each identified loophole and applied the necessary version upgrades. Operating system compatibility updates followed on both iOS and Android. The result is uninterrupted functionality for users regardless of how recently they updated their device.
Dedicated Multi-Discipline Team
Requirement:
Maintaining a native app on two platforms with a PHP backend needs coverage across several disciplines, not a single generalist developer.
Solution:
We assigned five professionals to the project: an iOS developer, an Android developer, a PHP backend developer, a quality analyst, and a project manager. The team works 40 hours per month. That structure gives the client platform-specific expertise and independent testing without carrying a full-time team.
AI Feature Roadmap
Requirement:
The client wanted the app to keep advancing rather than simply holding its current position in the market.
Solution:
We developed AI-powered call transcription, which converts audio and video recordings into text and makes calls accessible to users with hearing impairments. AI-powered keyword tagging follows, identifying topics and key ideas within a recording. Users will locate a budget discussion by keyword instead of replaying the entire call.
Key Features of CallRecorderPro
Record Calls
Capture incoming and ongoing calls through the call and voice recorder, saved automatically to the device.
Screen Recording
Record screen activity during a call so shared presentations and visual information are not lost afterward.
Cloud Storage
Back up every audio and video recording to the cloud with 20GB of free disk space included.
Strong Security Protocols
End-to-end data encryption and secure cloud storage protect recordings against unauthorized access.
Unlimited Call Duration
Record without a time limit across every format, covering audio calls, video calls, and screen recordings.
Recording Management
Manage recordings from the record manager, where users delete, edit, trim, and rename call logs.
Global Accessibility
Use the app in seven widely spoken languages, including English, Spanish, and French.
In-App Purchases
Complete purchases inside the app using card details stored in iCloud for faster, more secure transactions.
Quick Calling
Place calls through the built-in dial pad or find contacts through the integrated contact manager.
AI-Powered Call Transcription
Recordings convert into text automatically, giving users a searchable reference and making calls accessible to people with hearing impairments.
AI-Powered Keyword Tagging
AI identifies keywords, main topics, and key ideas across a recording, so users jump straight to the part of a call that matters.
Who This Call Recording App Serves
Business Professionals Recording Client Calls
Entrepreneurs and Founders
Sales and Account Management Teams
Consultants Documenting Advisory Sessions
Journalists Conducting Interviews
Legal and Compliance Teams
Remote Workers Capturing Meeting Detail
Individuals Recording Personal Conversations
Technology Stack We Used
iOS App
Swift 5
Android App
Kotlin
Java
Backend Development
PHP 7.3
Laravel Lumen
Cloud and Database
AWS S3
MySQL
Libraries and Services
TwilioSwiftyStoreKit
Firebase Services
Firebase Authentication
Firebase Analytics
Firebase CrashlyticsRemote Config
Our Role in the CallRecorderPro Project
Space-O Technologies took over CallRecorderPro from a previous vendor and now handles its ongoing technical maintenance across both platforms.
Project Takeover and Asset Migration
PHP Development (Backend)
Quality Assurance and Release Management
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