Comparison

BPM Master vs Prompt Watch

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

Head to head
About

BPM Master

Features
Read full description

Quick, Accurate Beat Measurement Effortless Tap Control: Easily determine song BPM with a simple tap. Apple Watch Optimized: Always at hand for DJs, musicians, and music enthusiasts. Reliable Algorithm: Get fast and precise BPM readings. Automatic Reset: Ready for the next beat without manual resetting. Download BPM Counter and stay in rhythm effortlessly!

About

Prompt Watch

Interact with leading AI models directly from your Apple Watch using voice commands. This client requires your own API keys from providers like OpenAI, Google, and Anthropic to access AI services.

Highlights
  • Voice-first AI interaction
  • Support for 6 AI providers
  • OpenRouter integration for hundreds of models
  • Customizable Watch home screen widgets
  • Google Calendar integration
  • Prompt history with token tracking
  • Customizable prompts and advanced API controls
Features
Currently charting
Read full description

Prompt Watch - LLM API Client for Apple Watch A professional API client for Apple Watch enabling direct voice interaction with leading AI models. Speak to your wrist, get instant AI responses. REQUIRES YOUR OWN API KEYS This app does not provide AI services. You must have API keys from: Anthropic (Claude), OpenAI (ChatGPT), Google (Gemini), xAI (Grok), Perplexity, or OpenRouter. KEY FEATURES Voice-First Interface — Natural speech-to-text with text-to-speech responses 6 AI Providers — Switch seamlessly between Claude, ChatGPT, Gemini, Grok, Perplexity, and OpenRouter OpenRouter Integration — Access hundreds of AI models through a single API key Customizable Watch Home Screen — Configure up to 4 widget shortcuts on your Watch home screen. Assign any provider and model, set a fixed prompt for instant one-tap responses, or leave it empty to open dictation. Customize widget name, icon, and color. Google Calendar Tools — List events and create calendar entries with voice commands Prompt History — Review conversations with token usage tracking synced across devices Custom Prompts — Save reusable templates for quick access on Watch Advanced Controls — Adjust temperature, tokens, Top K/P, and system prompts per provider Privacy-First — API keys stored locally, direct communication with providers Seamless Sync — Configure on iPhone, use on Watch instantly PROFESSIONAL FEATURES Hundreds of models via OpenRouter (GPT-4o, Llama, Mistral, and more) Multiple model options per provider Token usage monitoring (input/output/total) Request duration tracking Full API parameter control MCP tool integration (Google Calendar for Claude, ChatGPT, Gemini, and Grok) SETUP Get API keys from your chosen providers Configure settings in iPhone app Sync to Apple Watch Start speaking For developers and AI enthusiasts who want professional LLM access on their wrist. No subscriptions. No data collection. Just direct API control.

Screenshots

Prompt Watch4 screens

Verdict

The call

The clearest difference is price: BPM Master at $0.99 against Prompt Watch's $6.99. BPM Master also leads on iOS requirement (13.0 vs 26.0). Prompt Watch's advantage is chart position (#187 vs unranked). On update cadence, ads, in-app purchases 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

BPM Master costs $0.99 and Prompt Watch $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

BPM Master ships an update every 6 weeks, Prompt Watch every 2 months. The most recent releases landed on September 30, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 8 level
BPM Master versus Prompt Watch: the parameters behind the verdict, then further details
ParameterBPM MasterPrompt Watch
Price$0.99 — better$6.99
Rating—4.0 (1 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—1 — better
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
Monetization—Paid
Best chart rank—#187 — better
DevicesiPhone, iPod, Apple WatchiPhone, iPad, Apple Watch
Requires iOS13.0 — better26.0
Further details — not scored
Size1 MB11 MB
Age rating4+12+
DeveloperOleksandr PashaJan Stepanek

In-app purchases

None

BPM Master

No in-app purchases

None

Prompt Watch

No in-app purchases

Questions

Is BPM Master free?
BPM Master costs $0.99, with no in-app purchases.
Is Prompt Watch free?
Prompt Watch costs $6.99, with no in-app purchases.
Do BPM Master or Prompt Watch have ads?
Neither BPM Master nor Prompt Watch shows ads.
Which is updated more often, BPM Master or Prompt Watch?
BPM Master ships an update every 6 weeks, and Prompt Watch every 2 months. Most recently, BPM Master was updated on September 30, 2026 and Prompt Watch on October 24, 2026.

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