Comparison

Least Common Multiple (LCM) vs dB Meter

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

Head to head
About

Least Common Multiple (LCM)

Features
Read full description

The IOS Least Common Multiple (LCM) App was created in response to requests by visitors to the popular https://multiples.info website. This app will not only find the LCM of your numbers, but it will also calculate the multiplier you need to multiply each number by to get the LCM. The app is fast, intuitive, and easy to use. It is a standalone app, which means that it will work perfectly fine in places with little or no Internet access. We hope the Least Common Multiple App will become one of your favorite math apps.

About

dB Meter

Features
Read full description

dB Meter turns your iPhone into a fast, beautiful, and accurate sound-level meter. Measure the noise around you in real time — at home, at work, at a concert, or anywhere you want to protect your hearing. No ads. No tracking. Completely free. LIVE MEASUREMENT • Real-time decibel readings on a precise speedometer-style gauge • Smooth, sound-reactive animations that come alive with the noise around you • Min, average, and max stats plus a rolling 60-second graph PROFESSIONAL ACCURACY • A-weighting (dBA) to match how the human ear hears, like professional meters • Adjustable calibration so readings fit your device • Leq (equivalent continuous level) for recorded sessions PROTECT YOUR HEARING • Clear noise categories from Very Quiet to Dangerously Loud • Instant warning when levels become risky (around 85 dB) • Daily noise-exposure dose based on the NIOSH 85 dB / 8-hour limit RECORD, TRACK & SHARE • Save measurements and review them with charts and a map • Tag measurements with your location (optional) • Export data as CSV • Share a gorgeous measurement card to social media EVERYWHERE YOU NEED IT • Live Activity in the Dynamic Island and on your Lock Screen while measuring • Home and Lock Screen widgets showing your latest reading • A companion Apple Watch app to measure right from your wrist PRIVATE BY DESIGN • Audio is never recorded or stored — only the loudness is analyzed, instantly • Your measurements stay on your device • No ads, no analytics, no third-party tracking dB Meter provides approximate readings for everyday awareness and is not a certified measurement instrument.

Screenshots

Least Common Multiple (LCM)4 screens
dB Meter4 screens

Verdict

The call

The clearest difference is price: Least Common Multiple (LCM) at Free against dB Meter's $12.99. Least Common Multiple (LCM) also leads on iOS requirement (14.1 vs 17.0). dB Meter's advantage is update cadence (monthly vs every 38 months). On ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Least Common Multiple (LCM) is free to download; dB Meter costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Least Common Multiple (LCM) ships an update every 38 months, dB Meter monthly. The most recent releases landed on October 19, 2026 and October 5, 2026 respectively.

Scorecard3 real differences Ā· 3 level
Least Common Multiple (LCM) versus dB Meter: the parameters behind the verdict, then further details
ParameterLeast Common Multiple (LCM)dB Meter
PriceFree — better$12.99
Update frequencyEvery 38 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, Apple Watch
Requires iOS14.1 — better17.0
Further details — not scored
Size0 MB4 MB
Age rating4+4+
DeveloperH ValeurBirkan Aksoy

In-app purchases

None

Least Common Multiple (LCM)

No in-app purchases

None

dB Meter

No in-app purchases

Questions

Is Least Common Multiple (LCM) free?
Least Common Multiple (LCM) is free to download, with no in-app purchases.
Is dB Meter free?
dB Meter costs $12.99, with no in-app purchases.
Do Least Common Multiple (LCM) or dB Meter have ads?
Neither Least Common Multiple (LCM) nor dB Meter shows ads.
Which is updated more often, Least Common Multiple (LCM) or dB Meter?
Least Common Multiple (LCM) ships an update every 38 months, and dB Meter monthly. Most recently, Least Common Multiple (LCM) was updated on October 19, 2026 and dB Meter on October 5, 2026.

Other comparisons