Alter: macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required. spf.io: AI captioning and translation platform for in-person, virtual, and hybrid events, supporting 100+ languages with broad streaming integrations. Here's where each one pulls ahead on pricing, features, and the meetings it suits best.
How Hosiqo compares and tests toolsFinal recommendation
Shortlist Alter when freelancers and consultants privately capturing client calls without a visible bot matters most, and spf.io when providing multilingual accessibility for webinars streamed via zoom, youtube, or obs matters most. Run both through a week of actual calls to see which suits your workflow.
macOS-native AI meeting assistant that records and transcribes calls locally with built-in Whisper and Parakeet models, no bots required.
AI captioning and translation platform for in-person, virtual, and hybrid events, supporting 100+ languages with broad streaming integrations.
Alter is a native macOS application that records, transcribes, and analyzes meetings directly on the user's Mac without sending a bot into the call. Instead of joining a meeting as a visible participant, Alter captures audio from the system output and microphone, so it works across Zoom, Microsoft Teams, Google Meet, WhatsApp, FaceTime, Skype, Discord, and in-person conversations. Transcription runs through on-device models, with a choice of an optimized Parakeet model for major languages or Whisper for broader language coverage, and speaker identification is performed locally. Because processing happens on the device, recordings and transcripts stay on the Mac and the app can operate without an internet connection. Beyond raw transcripts, Alter generates summaries and action items, lets users chat with their meetings, and connects to tools such as Notion, Slack, Linear, Asana, and Jira. It targets solopreneurs, freelancers, consultants, and other professionals who want private, bot-free meeting capture on macOS. The product is actively developed and operating in 2025 and 2026. Pricing varies by plan. Check the official website for current pricing.
Best suited for
spf.io, operated by TheoTech LLC, is an AI-powered captioning and translation platform built for in-person, virtual, and hybrid events. It provides automatic live captions and real-time translation in more than 100 languages, plus AI-generated translated audio in over 70 languages, so multilingual and deaf or hard-of-hearing audiences can follow sessions in their preferred language. Output can be shown on projectors with up to four languages at once, embedded into web and app players, or accessed by attendees on mobile devices through a QR code or URL with both text and audio options. The platform integrates with common meeting and streaming tools including Zoom, Microsoft Teams, Google Meet, YouTube, Facebook Live, OBS, StreamYard, vMix, and Twitch. Beyond fully automatic captions, spf.io supports supervised and edited captioning for quality control, bidirectional translation, manuscript-based delivery, and interpreter subtitling. It offers customization such as vocabulary fine-tuning, adapted machine translation models, custom speech recognition, and profanity filtering, and it makes remote operators, professional captioners, and interpreters available as add-on services. The company publishes ongoing product updates into 2026, confirming it is actively operating. Pricing varies by plan. Check the official website for current pricing.
Best suited for
Alter is a free tier with paid upgrades (freemium); spf.io is a free tier with paid upgrades (freemium). Always confirm current pricing on each vendor's site before buying.
| Feature | Alter | spf.io |
|---|---|---|
| Core capability | On-device transcription using built-in Whisper and Parakeet models | Automatic live captions and translation in 100+ languages, with translated audio in 70+ |
| Standout feature | Bot-free capture of system audio and microphone across any meeting or call app | Projector display of up to four languages plus mobile QR/URL attendee access |
| Team usage | Automatic speaker identification performed locally | Integrations with Zoom, Teams, Google Meet, YouTube, OBS, StreamYard, vMix, and Twitch |
| Integrations | AI summaries, action items, and chat-with-your-meeting Q&A | Supervised/edited captioning and bidirectional translation modes |
| Languages & capture | Integrations with Notion, Slack, Linear, Asana, Jira and other tools | Vocabulary fine-tuning, custom speech recognition, and adapted translation models |
| Best-fit workflow | Offline operation with recordings and transcripts stored locally | Optional professional captioners, interpreters, and remote operators as add-ons |
Alter
Choose Alter if you need freelancers and consultants privately capturing client calls without a visible bot — strengths include local processing keeps recordings and transcripts on the user's own mac.
spf.io
Choose spf.io if you need captioning and translating large in-person conferences across projectors and mobile devices — strengths include very broad language coverage for both captions and translated audio.
Alter
spf.io
It depends on your workflow. Alter is strong for freelancers and consultants privately capturing client calls without a visible bot, while spf.io is strong for captioning and translating large in-person conferences across projectors and mobile devices. Both transcribe and summarize meetings.
Alter is a free tier with paid upgrades and spf.io is a free tier with paid upgrades. Check each vendor's pricing page for the latest plans and free-tier limits.
Yes. Many teams run more than one meeting assistant when the workflows are complementary.
More head-to-head comparisons involving Alter and spf.io.
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