Sound Level Meter vs Morph
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Sound Level Meter
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Measure noise like a pro โ straight from your iPhone. Sound Level Meter: Decibel turns your iPhone into a precision SPL meter, engineered to the IEC 61672-1 international standard. Protect your hearing, document a noise complaint, tune a studio, or pre-check a workplace - reliable readings in seconds, clean A4 PDF reports in one tap. KEY FEATURES โข Real-time dB readings with A, C and Z weighting โ switch on the fly โข Fast (125 ms), Slow (1 s) and Impulse time integration โ the modes pros use โข 1/3-octave frequency analysis โข Multiple live visualizations: histogram, gauge, circle meter, applause meter, basic graph โข All metrics in one place: LAeq, Min, Max, Avg, Peak โข Save full measurement sessions with timeline, location and notes โข Calibration screen for fine-tuning against any reference meter โข Available in English, French, German, Spanish, Italian, Japanese, Chinese โข Distraction-free dark interface focused entirely on your data DESIGNED FOR ACCURACY Sound Level Meter: Decibel follows the IEC 61672-1 sound level meter specification: โข True biquad-cascade A and C weighting filters โ not generic high/low-pass approximations โข Exponential averaging on squared pressure (the correct method) โข Per-device calibration based on the iPhone hardware actually in use โข User-adjustable offset to align with any reference meter or calibrator IDEAL FOR โข Audio engineers tuning studios, venues and rehearsal spaces โข Workplace safety pre-checks before a formal acoustic survey โข Musicians, DJs and podcasters watching their hearing exposure โข Parents monitoring nursery or kids' bedroom noise levels โข Tenants documenting noise from neighbors, traffic or construction โข Anyone serious about long-term hearing health FAQ How accurate is it? After one-time calibration against a known reference, expect 2โ3 dB of typical accuracy in the 40โ95 dB range. Maximum measurable level is bounded by your iPhone hardware (around 104โ110 dB). Does it replace a certified sound level meter? For monitoring, awareness and personal documentation: yes. For legally certified acoustic measurements, dedicated class 1/2 hardware remains the reference. Can I export my measurements? Every saved session generates an A4 PDF with full stats and the timeline graph. Print it, email it, AirDrop it โ anywhere PDFs work. Why do I see different values than another decibel app? iPhone microphone sensitivity varies between models, and each app handles calibration differently. Use the built-in calibration screen to align with a trusted reference. How is my data handled? Sessions are stored locally on your iPhone. Nothing is uploaded โ your acoustic data stays yours. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://sonometredecibelmeter.blogspot.com
Morph
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Morph helps you build habits that actually stick โ with a beautiful interface that makes daily tracking feel effortless. Watch your habits transform. Every day you show up, your habit cards visually evolve, giving you a real, tangible sense of progress. The longer your streak, the more your cards morph โ turning consistency into something you can see and feel. GET STARTED IN SECONDS Browse 55+ science-backed habit templates across 5 categories โ Health, Fitness, Mental Wellness, Lifestyle, and Social โ or create your own with custom goals and units. No setup friction, no account required. TRACK WHAT MATTERS Tap to complete your daily habits Visual streak tracking with evolving card designs Set custom daily goals with flexible units (liters, steps, minutes, pages...) Swipe to delete habits you no longer need SEE YOUR PROGRESS Completion rate, active days, and current streaks at a glance Activity heatmap calendar to spot your patterns Per-habit streak charts to stay motivated Weekly, monthly, and yearly stat breakdowns STAY CONSISTENT Daily smart reminders at your preferred time Home screen widget to check progress without opening the app Motivational messages that adapt to your daily progress DESIGNED FOR FOCUS No social feeds. No ads. No gamification tricks. No data collection. Morph is a calm, focused space for your personal growth. Beautiful dark mode included. YOUR PRIVACY, GUARANTEED All your data stays on your device. No account. No sign-up. No analytics. No third-party tracking. Zero data leaves your iPhone or iPad. Period. WORKS EVERYWHERE Optimized for iPhone and iPad with adaptive layouts. Add the home screen widget for instant progress tracking. MORPH PRO Morph is free to use with up to 5 habits. Upgrade to Morph Pro to unlock unlimited habits, custom habit creation, and the home screen widget. Available as a weekly, monthly, or yearly subscription โ or as a one-time lifetime purchase. Download Morph. Show up every day. Watch yourself transform. Terms of Use: https://glistening-wealth-1c3.notion.site/Morph-Terms-32c8078a5ba380eda2faf2aa49fba951 Privacy Policy: https://glistening-wealth-1c3.notion.site/Morph-Politique-de-confidentialit-31f8078a5ba38040b25ef476f8757134
Screenshots
Verdict
The clearest difference is ads: Morph at none against Sound Level Meter's shown. Morph also leads on update cadence (every 9 days vs every 12 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Sound Level Meter sells 3 in-app purchases, starting at $1.99 per 7 days and Morph sells 4 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Sound Level Meter ships an update every 12 months, Morph every 9 days. The most recent releases landed on June 5, 2026 and September 20, 2026 respectively.
| Parameter | Sound Level Meter | Morph |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 12 months | Every 9 days โ better |
| Ads | Yes | No โ better |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 16 โ better | 17.0 |
| Further details โ not scored | ||
| Size | 35 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Raphael Goupille | Antoine Martineau |
In-app purchases
Sound Level Meter
- Weekly Subscription$1.997 Days
- Monthly subscription$5.991 Month
- Annual subscription$24.991 Year
Morph
- Morph Pro - Weekly3 Days trial$1.997 Days
- Morph Pro - Monthly$3.991 Month
- Morph Pro - Yearly$17.991 Year
- Morph Pro - Lifetime$34.99









