Crisp vs GhostSIM
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
GhostSIM
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GhostSIM is a privacy tool that gives you a temporary virtual number for SMS verification: sign up for services without handing over your own phone number, and read the code in the app seconds later. If no code arrives, your credits are refunded automatically. HOW IT WORKS β’ Pick a service and a country. β’ Buy the number; it appears on screen. β’ When the verification SMS arrives, the code is copied to your clipboard automatically. β’ If the number is never used, the credits go back to your balance. WHY GHOSTSIM β’ Your own number stays private: a temporary number goes into the sign-up form instead. β’ A wide choice of countries and hundreds of services. β’ Credit based: you pay for the numbers you use, with no mandatory subscription. β’ No account needed; the app creates an anonymous profile on first launch. β’ 14 interface languages: English, Turkish, German, Spanish, Portuguese, French, Russian, Arabic, Hindi, Indonesian, Japanese, Korean, Chinese, Ukrainian. β’ Dark theme, clean interface, no ads. CREDITS AND SUBSCRIPTIONS β’ Credit packs are one-time purchases and never expire. β’ Weekly and monthly Pro subscriptions top you up regularly; cancel any time in your store account. β’ The credit price of every number is shown before you buy it. GOOD TO KNOW β’ GhostSIM only shows incoming verification messages; it cannot place calls or send SMS. β’ Numbers are temporary, meant for a single verification, and are not reserved for you permanently. β’ Use the app to keep your own accounts private; using it in ways that break a service's own rules is not allowed. Questions or feedback: semihmalkoc53@gmail.com
Screenshots
Verdict
The clearest difference is update cadence: GhostSIM at every 11 days against Crisp's every 2 months. GhostSIM also leads on iOS requirement (15.0 vs 17.0). 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 $1.99 per 7 days and GhostSIM sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Crisp ships an update every 2 months, GhostSIM every 11 days. The most recent releases landed on October 18, 2026 and October 14, 2026 respectively.
| Parameter | Crisp | GhostSIM |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | Every 11 days β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad | iPhone, iPad, iPod β better |
| Requires iOS | 17.0 | 15.0 β better |
| Further details β not scored | ||
| Size | 2 MB | 33 MB |
| Age rating | 4+ | 4+ |
| Developer | ZHENGQIAO JIANG | Semih Malkoc |
In-app purchases
Crisp
- Weekly$1.997 Days
- Monthly$4.991 Month
- Yearly$29.991 Year
- Lifetime$79.99
GhostSIM
- Weekly Pro$3.997 Days
- Monthly Pro$11.991 Month
- Starter$2.49
- Booster$5.99









