Comparison

Decibels vs BlockSeeker

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

Head to head
About

Decibels

Measure sound levels in decibels using your device's microphone. View real-time graphs and historical data to detect noise pollution and protect your hearing. Calibrate for accurate readings across various environments.

Highlights
  • Measures sound in decibels (dB)
  • Displays sound samples on a graph
  • Detects loud and low environmental noise
  • Calibrated for accuracy
  • Shows min/avg/max decibel values
  • Saves data and view history
  • Calibrates decibel for each device
Features
Read full description

How loud is it, really? The neighbor's bass at 2 a.m. The workshop that leaves your ears ringing. Decibels gives you a number you can trust — and, when you need it, the evidence to back it up. Decibels is a precision sound level meter built like a real instrument: the IEC 61672 mathematics professionals use, per-device calibration verified against a laboratory-validated reference, and a design that shows what the noise is doing, not just how loud it is. A · C · Z WEIGHTING · FAST · SLOW · IMPULSE · Leq · LCpeak · SEL THE REAL MATHS, IN A REAL METER. MEASURE LIKE AN INSTRUMENT Every reading is a true IEC-weighted level. Choose A, C or Z weighting and Fast, Slow or Impulse response. Sessions record the energy-averaged Leq, the loudest moment, the C-weighted peak, sound exposure level (SEL) and the L10, L50 and L90 statistical levels used in environmental noise reports. An overload lamp shows when the microphone is clipping, and readings below the microphone's own floor are flagged, not faked. Fine-tune against any reference meter with the built-in guide. SEE WHAT THE NOISE IS A number says it's loud; the spectrum says it's a fridge compressor, a bass line or a siren. Switch the meter to a live FFT spectrum analyzer, 1/3-octave bands, or a scrolling spectrogram waterfall that paints frequency against time and identifies a sound by its shape. NIGHT MODE Start it at bedtime, set your wake-up time, and put the phone down. In the morning a quiet-hours report shows your night hour by hour: how quiet it was, when the loud moments happened, and how loud they were. Light on battery. KEEP THE EVIDENCE Set a threshold and get notified when noise crosses it. Turn on Evidence Clips and Decibels saves a 30-second recording around each event — 10 seconds before, 20 after — stored only on your phone, playable from the session, and shared only when you choose. Built for noise complaints. PROTECT YOUR HEARING An exposure dosimeter tracks your daily noise dose against NIOSH, OSHA and EU 2003/10/EC limits: dose percentage, time-weighted average and safe time remaining at the current level. Export sessions to Apple Health as environmental audio exposure. ALWAYS WITHIN REACH A Live Activity keeps the meter on your Lock Screen and in the Dynamic Island while you record, Stop button included. Widgets show your last reading and today's dose. Share a session card in one tap, or export CSV data and PDF reports. PRIVATE BY DESIGN No ads. No tracking. No analytics. Audio is analysed on your device and never leaves it unless you share a clip or card yourself. Evidence Clips are off by default and require explicit consent. FREE - Live meter with A/C/Z weighting, Fast/Slow/Impulse response - Leq, Max, Min, C-weighted peak and overload indicator - Calibration trim and reference-meter guide - Sessions with chart, notes, tags and location (last 10) - One threshold alert - Live Activity, widgets, light and dark themes DECIBELS PRO - Unlimited session history - Spectrum analyzer, 1/3-octave bands and spectrogram waterfall - Night mode with quiet-hours reports - Evidence Clips - Exposure dosimeter (NIOSH · OSHA · EU) and Apple Health export - CSV and PDF export, share cards Decibels Pro is available as a yearly subscription or a one-time lifetime purchase. Payment is charged to your Apple ID account at confirmation of purchase. Subscriptions automatically renew unless cancelled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel subscriptions in your Apple ID account settings. Any unused portion of a free trial period will be forfeited when purchasing a subscription. Privacy Policy: https://realvision.app/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

BlockSeeker

Features
Read full description

BlockSeeker watches and controls your home cryptocurrency miners so you don't have to. It talks to your devices directly over your local Wi-Fi — no account, no cloud, nothing leaves your network. ONE APP FOR YOUR WHOLE FLEET • Open-source ESP32 solo miners that expose the AxeOS web API • Compact home ASICs with a JSON status API • Larger ASICs that speak the standard CGMiner API, on stock or aftermarket firmware Miners are grouped by type, and an automatic scan finds them all on your network. WATCH EVERYTHING AT A GLANCE • Live hashrate, temperature, power, best share and uptime for every miner • Fleet totals, average temperature per miner type, and a health timeline showing when miners went offline, ran hot or slowed down • Estimated electricity cost per day from your total power draw and your kWh rate • List or grid view; a dead or stuck miner is pinned to the top in red ALERTS THAT FIT EACH MINER • High-temperature, low-hashrate, best-share, block-found and offline alerts • Per-type thresholds — big ASICs run hotter than small solo miners, so set each group its own limits and stop the alert spam • Per-device overrides when one miner is special • Alert history grouped by miner type; mute when you need quiet AUTO-RECOVERY • Automatically reboot a stuck or overheating miner — every type — up to three tries a minute apart • On supported devices, optionally undervolt/downclock a miner that keeps overheating (with safe floors) • Fully opt-in and configurable EARNINGS & ODDS • Solo miners get block-odds estimates by algorithm — Bitcoin (SHA-256), Litecoin (Scrypt) and Zcash (Equihash) • Pool miners get an estimated daily payout per coin (and in USD) • A miner that solves a block lights up gold on the dashboard, with the height and difficulty, plus a full-screen celebration and sound CONTROL EVERY MINER • Switch pool, set performance work modes, tune frequency/voltage/fan where supported, identify and reboot • Apply pool switch, work mode or solo/pool to a whole group at once BUILT FOR YOUR DEVICES • iPhone and iPad • iCloud keeps your miner list the same on every device • Home-screen widget and a Live Activity with miners online, on the Lock Screen and (optionally) the Dynamic Island • Best-effort background monitoring so alerts can reach you when the app is closed PRIVATE BY DESIGN • Works only on your local network — your device must be on the same Wi-Fi as your miners • No sign-up, no analytics, no tracking. Nothing is collected. BlockSeeker is an independent app and is not affiliated with, endorsed by, or sponsored by any mining hardware manufacturer.

Screenshots

Decibels4 screens
BlockSeeker4 screens

Verdict

The call

The clearest difference is price: Decibels at Free against BlockSeeker's $1.99. BlockSeeker's advantage is in-app purchases (none vs 3) and update cadence (monthly vs every 30 months). On ads, device support and iOS requirement 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

Decibels is free to download; BlockSeeker costs $1.99 up front. Decibels sells 3 in-app purchases, starting at $3.99 per month. BlockSeeker asks for nothing beyond the download.

UpkeepUpdate frequency

Decibels ships an update every 30 months, BlockSeeker monthly. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

Scorecard3 real differences · 7 level
Decibels versus BlockSeeker: the parameters behind the verdict, then further details
ParameterDecibelsBlockSeeker
PriceFree — better$1.99
Rating4.3 (22 ratings) — better—
Positive reviews22.2% of reviews—
Number of ratings22 — better—
Update frequencyEvery 30 monthsMonthly — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.0 — better
Further details — not scored
Size20 MB4 MB
Age rating4+4+
DeveloperReal Vision LtdFredy Soussou

In-app purchases

3 purchases

Decibels

Subscriptions2
  • dB Meter Full App Access$3.991 Month
  • Decibels Pro — Annual3 Days trial$19.991 Year
One-time1
  • Decibels Pro — Lifetime$34.99
None

BlockSeeker

No in-app purchases

Questions

Is Decibels free?
Decibels is free to download, with in-app purchases available.
Is BlockSeeker free?
BlockSeeker costs $1.99, with no in-app purchases.
Do Decibels or BlockSeeker have ads?
Neither Decibels nor BlockSeeker shows ads.
Which is updated more often, Decibels or BlockSeeker?
Decibels ships an update every 30 months, and BlockSeeker monthly. Most recently, Decibels was updated on November 11, 2026 and BlockSeeker on November 5, 2026.

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