Crisp vs SimDock
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Crisp
Read full descriptionHide 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 measurements—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 — up to 30kHz in Ultrasonic mode — 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 — 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 — the same technique built into Apple Watch — 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
SimDock
Read full descriptionHide full description
SimDock helps you organize SIM card assets, track expiration dates, and securely view important messages across your own devices. KEY FEATURES • SIM card asset management: Manually enter ICCID, phone number, carrier, country or region, purpose, and notes. • Expiration reminders: Record activation and expiration dates, renewal cycles, and reminder preferences. • Multi-device sync: View SMS, app notifications, and call records synchronized from source devices you authorize. • End-to-end protection: New message titles and bodies are encrypted on the message-source device using AES-256-GCM. Content keys remain in secure storage on your devices. • Device management: View connected devices, online status, recent activity, and synchronization status. • Account security: Email verification, anti-bot login checks, password recovery, recovery keys, and permanent account deletion. PRIVACY AND PERMISSIONS Message collection is off by default and requires explicit permission for each capability. Devices used only to view synchronized data do not collect local SMS, notifications, or call records. SimDock does not read historical SMS. ICCID is always entered manually. SimDock does not provide eSIM downloads, switching, activation, LPA, APDU, or carrier services.
Screenshots
Verdict
The clearest difference is in-app purchases: SimDock at none against Crisp's 4. SimDock also leads on iOS requirement (15.6 vs 17.0). On price, ads and device support 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
Both are free to download. Crisp sells 4 in-app purchases, starting at $1.99 per 7 days. SimDock asks for nothing beyond the download.
| Parameter | Crisp | SimDock |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 months | — |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.6 — better |
| Further details — not scored | ||
| Size | 2 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | ZHENGQIAO JIANG | 上海英纵网络科技有限公司 |
In-app purchases
Crisp
- Weekly$1.997 Days
- Monthly$4.991 Month
- Yearly$29.991 Year
- Lifetime$79.99
SimDock
No in-app purchases









