Crisp vs Water Eject & Dust
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Crisp
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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 measurementsβso 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
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.
- Water expulsion mode
- Dust removal mode
- Sound frequency sweeps
- Microphone-based result comparison
- Siri integration for starting runs
- One-time purchase for unlimited use
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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
Verdict
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
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.
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.
| Parameter | Crisp | Water Eject & Dust |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 4 days β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | β | Free with in-app purchases |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 17.0 | 17.0 |
| Further details β not scored | ||
| Size | 3 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | ZHENGQIAO JIANG | Cloud Motion Lab LLC |
In-app purchases
Crisp
- Weekly3 Days trial$2.997 Days
- Monthly$5.991 Month
- Yearly3 Days trial$34.991 Year
- Lifetime$99.99
Water Eject & Dust
- Lifetime$9.99
Questions
Is Crisp free?
Is Water Eject & Dust free?
Do Crisp or Water Eject & Dust have ads?
Which is updated more often, Crisp or Water Eject & Dust?
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