Please which free app can I use to change my voice to more matured voice in real time during recording or streaming and can comfortably work with Camtasia and OBS?
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Free Real-Time Voice Changers for OBS & Camtasia
Thread: Best free tool for a deeper, more mature voice while recording/streaming?
Good news, this is a solved problem. Both Camtasia and OBS pull audio from your system microphone input, so any tool that installs as a virtual audio device will work with both automatically. 
Here’s what actually works, based on what’s out there right now.
🥇 Top Pick: Voicemod
Voicemod is the most widely recommended free option for exactly this use case. It runs as a virtual microphone on Windows, integrates directly with OBS, Twitch, and Discord, and clocks in at roughly 12-20ms of latency on a mid-range PC 
— low enough that it won’t create noticeable lag while recording or streaming live.[1][2]
The free tier gives you a rotating set of voice effects plus a permanent clean-mic filter. Since it installs as a system audio device, Camtasia picks it up the exact same way it picks up any regular mic.[1][2]
Pro tip: For a naturally deeper, mature tone, use the pitch-shift feature rather than a themed voice filter. 
Pitch shifting moves your entire voice down in semitone steps, giving you a controlled, believable deepening effect you can dial in yourself.
🐡 Runner-Up: Clownfish Voice Changer
If you want zero limitations and zero cost, Clownfish is fully free, no paid tiers, no feature locks, no rotating restrictions.[3]
It works at the OS level, meaning it modifies your mic input across every app simultaneously, OBS and Camtasia included, with no per-app setup. It has a basic pitch-shift effect suitable for voice deepening, though the quality is a bit rougher than Voicemod’s .[3]
Windows-only, worth noting.
🎵 For Higher Audio Quality: EaseUS VoiceWave
EaseUS VoiceWave brings a much larger library, 300+ effects, with both real-time and file-based modes. It explicitly lists OBS, Streamlabs, and Twitch as supported integrations .
Some effects are locked behind a paywall, but the real-time deepening effects are typically included in the free version.
🔌 Setup Note (Read Before You Install)
All three tools work by installing a virtual audio cable that sits between your mic and any app receiving audio. Once installed:
Open OBS/Camtasia’s audio settings
Select the tool’s virtual microphone as your input device
The voice effect now applies automatically to everything you record or stream
This is a one-time setup per app, not something you redo every session. 
TL;DR / My Recommendation
Start with Voicemod 
, smoothest streaming integration, lowest latency for live use. Use its pitch-shift slider rather than a novelty filter for a natural deeper tone.
If the free tier’s rotating effects feel limiting, Clownfish is a solid permanent fallback with zero restrictions, just a slightly rougher pitch effect. 
Thanks for your help.
How about Okada RealTime voice changer, have you tried it before?
!