Cumulus vs Murmur Keyboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cumulus
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Build your skills one block at a time with Cumulus. Cumulus is a simple, beautiful time tracker designed to help you build and measure progress on any skill. Whether you're learning guitar, studying a new language, coding, or practicing meditation—Cumulus helps you stay consistent and see your growth over time. Key Features: • Simple Time Tracking — Tap to start, tap to stop. Your sessions are automatically saved. • Organize Your Skills — Create categories and nest skills like building blocks. Track "Music" with sub-skills like "Guitar" and "Piano." • Visual Progress — See colorful charts showing how you spend your time across all your skills. • 100% Private — All data stays on your device. No accounts, no cloud, no tracking. • Clean Design — A focused, distraction-free interface that gets out of your way. Start stacking up your skills today with Cumulus.
Murmur Keyboard
This app converts your voice to text using advanced AI, all processed locally on your device for maximum privacy. It functions as a standalone application or a keyboard extension, allowing seamless dictation across any app without internet connectivity.
- 100% on-device transcription
- Offline functionality
- Custom keyboard for any app
- Smart warm/cold engine
- Dark mode support
- Transcription history
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Murmur turns your voice into text — entirely on your iPhone. No internet, no accounts, no data leaving your device. Powered by WhisperKit, Murmur runs a real speech recognition model locally, so your words stay yours. Use it as a standalone app or switch to the Murmur keyboard in any app — Messages, Notes, Mail, wherever you type. Tap the mic, speak naturally, and your transcription appears instantly. Most voice-to-text apps send your audio to the cloud. Murmur doesn't. It runs WhisperKit directly on your iPhone — no server, no account, no data collection. The new keyboard extension lets you dictate in any app, and v2.2 makes the whole flow feel faster and more polished in both light and dark mode. • 100% on-device transcription • Works offline, no cloud processing • Custom keyboard for dictation in any app • Smart warm/cold engine — fast when ready, clear when loading • Dark mode designed to feel intentional, not just inverted • Copy, share, or search your transcription history Your voice. Your words. Your device.
Screenshots
Verdict
The clearest difference is update cadence: Cumulus at every 2 days against Murmur Keyboard's every 5 days. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Cumulus ships an update every 2 days, Murmur Keyboard every 5 days. The most recent releases landed on October 6, 2026 and October 24, 2026 respectively.
| Parameter | Cumulus | Murmur Keyboard |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 2 — better |
| Update frequency | Every 2 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 18.5 | 17.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | ADAM CLAYTON HOLWERDA | John Wang |
In-app purchases
Cumulus
No in-app purchases
Murmur Keyboard
No in-app purchases









