clir Hearing vs Krisp Voice Isolation

clir Hearing is an iOS app that uses on-device processing to make speech clearer through headphones or hearing devices. Place an iPhone near a conversation or hold it, then open the app; it detects speech and removes background noise in real time. Clear Speech mode applies AI noise removal, while Original mode provides natural, gently amplified sound. Listed compatible devices include AirPods, Made-for-iPhone hearing aids, most Bluetooth headphones, and cochlear implants. Stated latency is 8 ms with wired audio and 98 ms with wireless audio. The app works without internet and requires no account. Audio stays on the device: conversations are not uploaded, stored, or used for training. Suggested situations include restaurants, family gatherings, meetings, television, and calls. First sessions are free without sign-up, with in-app purchases afterward. Monthly access costs $12.99 a month; yearly access costs $59.99 a year. It requires iOS 15.0 or later and is not a medical device.

Krisp Voice Isolation is a real-time voice model in Krisp VIVA, infrastructure for voice AI agents. It separates a main speaker from other voices, background chatter, and room echo before audio reaches speech-to-text processing. Krisp says Voice Isolation 2.5 runs on CPU with 15 ms latency and reduced word errors by 46% in its benchmark. The VIVA SDK also includes Turn Prediction, Interruption Prediction, Voice Activity Detection, and detectors for accent, gender, and synthetic speech. It runs server-side on premises or in a customer's cloud, ahead of the speech-to-text engine, and is designed to work with any STT engine. Listed integrations include LiveKit, Pipecat, and raw WebRTC pipelines. SDKs are listed for Python, Node.js, Go, and iOS; input and output are PCM S16LE, 16 kHz mono. The broader AI Voice SDK library supports Windows, Mac, Linux, web, iOS, and Android.