Comparison

ng vs Crisp

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

Head to head
About

ng

Features
Read full description

ng-audio is a professional control and measurement app developed for ng-audio subwoofers equipped with built-in RAM Audio PowerPack amplifiers. The app is also compatible with other subwoofers and loudspeaker systems using RAM Audio PowerPack DSP, making it suitable for both ng-audio installations and third-party systems. ng-audio provides direct DSP control together with advanced acoustic measurement tools, allowing precise low-frequency tuning and system verification directly from your iPhone or iPad. Wifi control of RAM Audio PowerPack DSP amplifiers Optimized workflow for ng-audio active subwoofers Compatible with third-party PowerPack-based systems (Limited Support) Real-time gain, mute, polarity, and preset control Live input/output VU metering Parametric EQ editing with direct DSP synchronization Logarithmic sweep measurements and frequency response analysis Real-Time Analyzer (RTA) SPL meter with manual and signal-based calibration USB microphone support with native UMIK-1 compatibility . Designed for system technicians, integrators, and audio professionals who require fast accurate control and reliable measurements in the field.

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

Screenshots

ng4 screens
Crisp4 screens

Verdict

The call

The clearest difference is in-app purchases: ng at none against Crisp's 4. ng also leads on update cadence (every 10 days vs every 2 months). Crisp's advantage is iOS requirement (17.0 vs 26.0). On price, ads 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. ng asks for nothing beyond the download.

UpkeepUpdate frequency

ng ships an update every 10 days, Crisp every 2 months. Both last shipped on October 25, 2026.

Scorecard3 real differences Β· 3 level
ng versus Crisp: the parameters behind the verdict, then further details
ParameterngCrisp
PriceFreeFree
Update frequencyEvery 10 days β€” betterEvery 2 months
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPadiPhone, iPad
Requires iOS26.017.0 β€” better
Further details β€” not scored
Size27 MB3 MB
Age rating4+4+
DeveloperDaniel NordgrenZHENGQIAO JIANG

In-app purchases

None

ng

No 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

Questions

Is ng free?
ng is free to download, with no in-app purchases.
Is Crisp free?
Crisp is free to download, with in-app purchases available.
Do ng or Crisp have ads?
Neither ng nor Crisp shows ads.
Which is updated more often, ng or Crisp?
ng ships an update every 10 days, and Crisp every 2 months. Most recently, ng was updated on October 25, 2026 and Crisp on October 25, 2026.

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