Comparison

Crisp vs Water Eject & Dust

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

Head to head
About

Crisp

Features
Read full description

Clear water. Test your speaker. Verify the result. Crisp uses targeted sound frequencies to help eject trapped water and dislodge dust from iPhone and iPad speakers. Then it listens with the microphone to compare real Before/After dB measurementsβ€”so you can check the result instead of guessing. NO ADS. NO ACCOUNTS. 100% OFFLINE. Is my data private? Everything runs on your device. Nothing leaves your iPhone or iPad. No accounts, no analytics, no ads, no tracking. How do I get started? 1. Place your device face down on a soft surface 2. Set volume to maximum 3. Tap Start Eject and wait 3 minutes What can I do with it? - Eject trapped water using a 165Hz tone, or switch to Dust mode to shake out lint and debris - Choose Normal, Turbo, or Deep intensity for a faster or more thorough clean - Find your phone's exact speaker resonance point with Resonance Finder for a stronger clean - Compare a real Before/After dB reading, not just a guess, to confirm the cycle worked - Generate any tone from 20Hz to 22kHz β€” up to 30kHz in Ultrasonic mode β€” with sine, square, triangle, or sawtooth waveforms - Test speaker frequency response with bass (80Hz), mid (1kHz), and treble (8kHz) presets - Run stereo balance (left/right) tests on stereo-capable devices - Check your microphone for blockages with a one-tap diagnostic - Measure ambient sound level with the built-in dB meter - Sweep frequencies automatically to dislodge stubborn dust particles - Take a structured hearing test across the audible range and save your audiogram - Save your favorite frequencies for one-tap recall - Set a cleaning reminder and track your streak over the past 7 days - Ask Siri to eject water, hands-free - 100% no ads, ever β€” most speaker-cleaning apps are free with ads until you subscribe; Crisp never shows one What devices does it work on? iPhone or iPad running iOS 17 or later. The same audio principles work on any built-in speaker. Why use Crisp? Speaker grilles trap moisture from sweat, rain, pool splashes, and humidity. Dust and pocket lint accumulate over time. Crisp uses sound vibration β€” the same technique built into Apple Watch β€” to physically dislodge particles without opening your device or using cleaning tools that can damage internal components. Does it really work? Sound vibration ejection is a well-documented technique. Results depend on how much water is trapped and how recently. For best results, run the cycle within an hour of water exposure, repeat 2 to 3 times, and keep the device face down throughout. How much does it cost? Download free. Optional Crisp Pro plans and any eligible introductory offer are shown in the app using your local App Store price. You can manage or cancel subscriptions anytime in Settings. Terms of Use: https://taxlite.net/crisp/terms.html Privacy Policy: https://taxlite.net/crisp/privacy.html

About

Water Eject & Dust

This app helps clear muffled iPhone speakers caused by water or dust. It uses specific sound frequencies to expel water and dislodge dust from the speaker grille. Results are compared using microphone input before and after the cleaning process.

Highlights
  • Water expulsion mode
  • Dust removal mode
  • Sound frequency sweeps
  • Microphone-based result comparison
  • Siri integration for starting runs
  • One-time purchase for unlimited use
Features
Read full description

Water Eject plays three rounds at the bottom speaker grille to shake water droplets loose: the pulsed low tone Apple Watch uses after a swim, then a short broadband pulse, then a higher band. It works on the bottom speaker, not on the earpiece, the microphone or the charging port. Hold the phone speaker-down and press Start. Round 1, Low Sweep, 21 seconds. A sweep around the centre you set on the dial, anywhere from 120 to 260 Hz. Then the tap step. Tap the phone gently against your palm, speaker down, until it chimes. That is Apple's own advice for a wet iPhone, and the app counts the taps and moves on by itself. Round 2, Pulse Shots, 18 seconds. Short broadband pulses. The tap step again. Round 3, High Sweep, 12 seconds. A sweep from 400 to 1,000 Hz. Session complete. Let it dry before charging. The tone runs 51 seconds across the three rounds, and the two tap steps sit between them. Drops shake out of the disc on screen while the tone plays, and the phone pulses in your hand with it. The dial sets the centre of the first round's sweep, from 120 to 260 Hz. Rounds 2 and 3 are fixed. How do you check the result? With microphone access and the volume all the way up, the app plays a short chime through the speaker before the session and again after it, then compares the two levels. It tells you whether the speaker came back louder, about the same, or quieter. It never shows a percentage. Play it through the iPhone's own speaker. Disconnect headphones, AirPods or a Bluetooth speaker first, and turn the volume all the way up. It cannot dry the inside of a phone. If the speaker still sounds muffled after a session, let it dry and come back to it. Made for anyone whose iPhone just came out of a pool, the rain, the shower or the sink. Your first session is included. After that, one purchase unlocks unlimited sessions for good: nothing renews, and there are no ads. No account is needed, and the tone is made on the iPhone itself. You can start a session with Siri: say "Start a run in Water Eject" and the app opens and plays the tone. Hold the phone speaker-down and press Start. Terms of Use: https://cmlapps.github.io/watereject/terms.html Privacy Policy: https://cmlapps.github.io/watereject/privacy.html

Screenshots

Crisp4 screens
Water Eject & Dust4 screens

Verdict

The call

The clearest difference is update cadence: Water Eject & Dust at every 4 days against Crisp's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

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

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

Both are free to download. Crisp sells 4 in-app purchases, starting at $2.99 per 7 days and Water Eject & Dust sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Crisp ships an update every 2 months, Water Eject & Dust every 4 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard1 real difference Β· 6 level
Crisp versus Water Eject & Dust: the parameters behind the verdict, then further details
ParameterCrispWater Eject & Dust
PriceFreeFree
Update frequencyEvery 2 monthsEvery 4 days β€” better
AdsNoNo
In-app purchasesYesYes
Monetizationβ€”Free with in-app purchases
DevicesiPhone, iPad β€” betteriPhone
Requires iOS17.017.0
Further details β€” not scored
Size3 MB12 MB
Age rating4+4+
DeveloperZHENGQIAO JIANGCloud Motion Lab LLC

In-app purchases

4 purchases

Crisp

Subscriptions3
  • Weekly3 Days trial$2.997 Days
  • Monthly$5.991 Month
  • Yearly3 Days trial$34.991 Year
One-time1
  • Lifetime$99.99
1 purchases

Water Eject & Dust

One-time1
  • Lifetime$9.99

Questions

Is Crisp free?
Crisp is free to download, with in-app purchases available.
Is Water Eject & Dust free?
Water Eject & Dust is free to download, with in-app purchases available.
Do Crisp or Water Eject & Dust have ads?
Neither Crisp nor Water Eject & Dust shows ads.
Which is updated more often, Crisp or Water Eject & Dust?
Crisp ships an update every 2 months, and Water Eject & Dust every 4 days. Most recently, Crisp was updated on October 28, 2026 and Water Eject & Dust on October 31, 2026.

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