NexaSDK for Mobile vs Screencap: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of NexaSDK for Mobile and Screencap — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
NexaSDK for Mobile
Nexa AI
A cross-platform SDK to run and ship LLMs, multimodal, ASR and TTS models on mobile, PC, automotive and IoT with NPU/GPU/CPU acceleration.
Key features
- Cross-Platform Runtimes: Provides unified runtimes and SDK bindings for Android, Linux, CLI and Python to build and run models on mobile, PC, automotive, and IoT platforms.
- Hardware Acceleration Support: Optimized execution across NPUs, GPUs and CPUs (including Apple Neural Engine support) to deliver low-latency inference and efficient power usage on-device.
- Model Compatibility and Conversion: Tools to import, convert, and optimize LLMs and multimodal models for on-device execution, including quantization and engine-specific optimizations to reduce memory and compute footprint.
- Multimodal & Speech Support: First-class support for LLMs, multimodal models, ASR and TTS pipelines so apps can run voice, text and vision capabilities locally without cloud dependency.
- NexaML Engine: Proprietary runtime engine that orchestrates model execution, memory management, and operator kernels to maximize throughput and stability across diverse hardware.
- Privacy-First Local Inference: Enables fully on-device model inference to keep sensitive data local, reducing latency and removing need for continuous cloud connectivity.
- Developer Tooling & Samples: Includes SDK integrations, sample applications and documentation to accelerate prototyping and production deployment on mobile devices.
- Profiling and Performance Tuning: Tools for benchmarking, profiling, and tuning model performance on target devices to balance latency, accuracy and power consumption.
- Deploy LLMs and multimodal models on-device (iOS & Android)
- Support for ASR and TTS pipelines
- Runtimes optimized for NPU, GPU and CPU
- SDKs for Android, iOS, Linux, Python and CLI
- Local inference for privacy and low-latency
- Production tooling for automotive and IoT integration
- Run LLMs, multimodal, ASR and TTS models locally on device
- Support for NPUs, GPUs and CPUs (hardware-accelerated inference)
- SDK tooling for CLI, Python, Android and Linux
- Powered by NexaML inference engine
- On-device/private inference for data privacy and low latency
- Production-ready deployment workflows for mobile, PC, automotive and IoT
- Support for platform-specific accelerators (e.g., Apple Neural Engine)
- Cross-platform model packaging and shipping to devices
Best for
- Offline Mobile Assistant: Embedding an LLM and TTS on iOS/Android to provide conversational assistant capabilities without sending user data to the cloud, improving privacy and latency.
- On-Device Speech Interfaces for Automotive: Running ASR and TTS locally in automotive head units to enable responsive voice control and navigation while preserving privacy.
- Multimodal AR/VR Experiences: Deploying vision+language models on-device for real-time scene understanding and interactive augmented reality without a network round-trip.
- Edge IoT Inference: Running lightweight multimodal or classification models on IoT devices to process sensor data locally and reduce cloud costs and bandwidth.
- Desktop Productivity Apps: Shipping LLM-powered writing, search, or summarization features in desktop applications with low latency and offline capability.
- Cost-Reduction for High-Volume Inference: Moving inference from cloud to device to lower recurring cloud compute costs and reduce server-side infrastructure requirements.
- Integrate on-device LLMs into mobile apps
- Build multimodal AR/assistant experiences with local inference
- Deploy speech recognition and TTS in offline/edge scenarios
- Embed AI into automotive infotainment and ADAS
- Run private inference on IoT and embedded devices
- Deploy conversational LLMs entirely on-device for mobile apps to preserve user privacy and reduce latency
- Integrate multimodal perception (vision + language) into automotive infotainment or driver assistance systems
- Embed on-device ASR and TTS for offline voice assistants on mobile and IoT devices
- Ship optimized models across heterogeneous hardware (NPU/GPU/CPU) in production fleets
- Prototype and test local inference workflows using CLI or Python before mobile integration
Screencap
Proteus Computer Use
Local-first macOS screen recorder that captures, labels, and indexes team workflows so knowledge stays searchable and private.
Key features
- Local-First Capture: Recordings live in ~/.screencap on your Mac and never leave unless you explicitly share them.
- On-Device Task Segmentation: An on-device model breaks long recordings into labeled tasks like payroll runs, expense approvals, or CRM data entry.
- Full-Text Search of Workflows: Every spoken word and on-screen moment is indexed so any past workflow can be surfaced months later by search.
- Privacy-Enforced Recording: Password managers and banking apps are cut before a frame is written; email and chat are masked in real time.
- MCP Context Snapshots: While recording, Screencap queries connected MCP servers to capture the exact Gusto/Attio/Linear/Notion record on screen inside the video.
- Deliberate Sharing With PII Scrubbing: Every shared copy is scrubbed of names, secrets, and PII, and only the recordings you pick ever leave the machine.
- Source-Available Codebase: The full capture engine, encryption, agent, and anonymizer are public on GitHub under PolyForm Noncommercial 1.0.0.
Best for
- Team Onboarding: Assemble ordered collections of real workflow recordings so new teammates learn exactly how work is actually done.
- Institutional Knowledge Capture: Preserve the tacit steps behind payroll runs, reconciliations, and quarterly reports as searchable video.
- Ops Documentation: Replace stale wikis by pointing teammates at labeled task recordings that stay current with the real system.
- Compliance-Sensitive Recording: Capture back-office work in banking, finance, and HR without leaking passwords, account balances, or PII.
- Computer-Use Dataset Contribution: Optionally donate reviewed, scrubbed recordings to a public dataset for training open computer-use models.