Comparison

VoiceZero vs Onyx

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VoiceZero

This app automatically transcribes and summarizes meetings into organized, searchable notes. It offers on-device recording and transcription for free, with advanced AI features like summaries and action items available through a one-time purchase.

Highlights
  • One-tap meeting recording
  • Automatic transcription
  • AI-generated summaries
  • Key decision and action item extraction
  • Searchable transcripts
  • On-device processing for privacy
  • No cloud or server reliance
Features
Read full description

VoiceZero turns every meeting into organised, searchable notes — automatically. Hit record. VoiceZero captures everything said and delivers a clean summary the moment you stop: a TL;DR, key decisions, and every action item — ready to share before you've left the room. AI features require Pro; recording and transcription are free. ONE-TAP RECORDING — FREE No setup. No bots joining your call. No calendar integrations to configure. Press record, have your meeting, get your transcript. AI SUMMARY — PRO Every recording produces a TL;DR, key decisions, and action items with owners — generated from what was actually said, not a template. Works on any iPhone or iPad: uses Apple Intelligence where available, or download Gemma directly in VoiceZero for the same AI features on any device. SEARCHABLE TRANSCRIPT — PRO Every word spoken is transcribed and indexed. Search across all your recordings to find any moment, any decision, any name. PRIVATE. ON-DEVICE. Transcription runs entirely on your device using Apple's built-in speech recognition, or switch to WhisperKit for higher accuracy (downloadable in Settings). Your audio never leaves your iPhone or iPad. No account required. ZERO SUBSCRIPTIONS Record unlimited meetings for free. Unlock AI summaries, action items, and full transcript search with a one-time Pro purchase — no subscription, ever. ZERO ANALYTICS VoiceZero collects no usage data, no crash reports, no telemetry. Nothing about how you use the app is ever shared with anyone. ZERO SERVERS There is no VoiceZero cloud. Your recordings live on your device and nowhere else.

About

Onyx

Features
Read full description

Meet Onyx, the private AI assistant that runs entirely on your iPhone. Ask anything. Get instant answers. No account, no internet, nothing shared. A REAL AI ASSISTANT, THE ONE YOU ALREADY KNOW Ask questions, brainstorm ideas, write emails and messages, summarize long texts, translate languages, get explanations on any topic, fix your code, prepare for an interview, plan a trip. Onyx does everything you expect from a modern AI chat, with real conversations and follow-up questions. 100% PRIVATE, BY DESIGN Every question and answer stays on your iPhone. Nothing is sent to our servers, and your data is never used. Not even we can see what you ask. WORKS COMPLETELY OFFLINE Download an AI model once and use it anywhere. On a flight, in the subway, abroad with no signal. Onyx keeps working when other AI apps stop. HUNDREDS OF MODELS, ONE PERFECT FOR YOU Llama, Qwen, Gemma, and many more models, all free. Onyx analyzes your iPhone and highlights the ones that will run best on it, so you get the most capable assistant without guessing. FAST AND BEAUTIFUL Answers appear in real time as the AI writes. Clean formatting, elegant design, smooth from start to finish. No subscription. No data collection. Just you and a powerful AI that respects you. Download Onyx and take back control of your AI.

Screenshots

VoiceZero4 screens
Onyx4 screens

Verdict

The call

The clearest difference is in-app purchases: Onyx at none against VoiceZero's 1. Onyx also leads on iOS requirement (18.0 vs 26.0). VoiceZero's advantage is ads (none vs shown). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. VoiceZero sells 1 one-off in-app purchase. Onyx asks for nothing beyond the download.

Scorecard3 real differences · 6 level
VoiceZero versus Onyx: the parameters behind the verdict, then further details
ParameterVoiceZeroOnyx
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 6 days—
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad — betteriPhone
Requires iOS26.018.0 — better
Further details — not scored
Size41 MB29 MB
Age rating4+4+
DeveloperEmeraldApps.ioDavid Azancot

In-app purchases

1 purchases

VoiceZero

One-time1
  • VoiceZero Pro$34.99
None

Onyx

No in-app purchases

Questions

Is VoiceZero free?
VoiceZero is free to download, with in-app purchases available.
Is Onyx free?
Onyx is free to download, with no in-app purchases.
Do VoiceZero or Onyx have ads?
Onyx shows ads; VoiceZero does not.

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