Comparison

VStomp Amp HD vs IR Loader

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

Head to head
About

VStomp Amp HD

Experience legendary amplifier tones on your mobile device. This app uses advanced modeling technology to deliver realistic guitar and bass amp simulations with built-in effects and a user-friendly interface.

Highlights
  • Advanced CDCM modeling system
  • 23+ legendary amplifier models
  • 20+ classic cabinet models
  • Built-in delay and reverb effects
  • Smart noise gate
  • Simple, intuitive UI
Features
Read full description

HEART POUNDING AMPLIFIERS ON THE GO The heart pounding VStomp Amp is now ready to go! Following the development of Hotone’s powerful and versatile XTOMP pedal and based on our proprietary CDCM system, VStomp Amp Mobile delivers organic, studio-grade sound quality and the exact character of legendary amplifiers – just the same as desktop version. PLAY REAL – POWERED BY CDCM SYSTEM Unlike mainstream modeling methods based on the characteristics of a certain “state” of the circuitry, which just “comes close” to the modeled sound, VStomp Amp Mobile employs a complex system based on dynamic feature modeling. In this matrix, every single circuit component is ALIVE and performs like its original. The realness of the amp and effects tones has amazed XTOMP users worldwide, and now you can experience it on the go! Behind VStomp Amp Mobile is Hotone’s CDCM (Comprehensive Dynamic Circuit Modeling) system. CDCM is built on an extremely complex dynamic variation matrix, able to realistically express every detailed change that occurs during the operational process of actual circuitry. This matrix will adjust its own modeling parameters and even framework based on the instrument input signal range, signal frequency, knob position, the instrument’s own impedance, and other variable parameters, all to achieve the closest possible characteristics of actual modeled circuitry. THE ESSENTIALS No complex signal chain. No confusing customization or combinations. You pick an amp model, pick a cab model, add some ambience – it’s that simple! The less you tweak, the more you enjoy: just pick out your rig and ROCK! FEATURES λ Grown out of next-gen XTOMP technology λ Simple-but-real guitar/bass amp simulator with easy-to-use UI λ Advanced CDCM modeling system ensures realistic playing experience λ Growing amp/cab library λ 23+ CDCM powered legendary vintage and modern amplifier models λ 20+ CDCM powered classic cabinet models λ Built-in delay and reverb effects with simple operation and huge ambience λ Built-in smart noise gate For more information: www.hotoneaudio.com

About

IR Loader

Load and shape your cabinet impulse responses with integrated EQ, compression, and a bass enhancer. This tool supports multiple IRs simultaneously and offers a power amplifier model for detailed tone control.

Highlights
  • Load multiple cabinet IR files
  • 6-band parametric equalizer
  • Custom console-style compressor
  • Bass Enhancer for low-end shaping
  • Class AB push-pull EL34 tube amplifier model
  • Standalone, AUv3, and IAA support
Features
Read full description

The Nembrini Audio IR Loader is an innovative and comprehensive impulse response loader designed to load your favorite cabinet IRs. The IR Loader allows you to load a single IR and shape your tone using integrated processing tools, including a 6-band parametric equalizer and a custom console-style compressor. The Bass Enhancer makes the Nembrini Audio IR Loader an ideal tool for managing and shaping both guitar and bass cabinet IRs. The integrated browser lets you quickly navigate your IR library and load impulse responses without interrupting your workflow. POWER AMPLIFIER Power amplifier modeled after a Class AB push-pull EL34 tube amplifier, featuring three selectable negative feedback modes. COMPRESSION Custom-designed console compressor with a sidechain high-pass filter. BASS ENHANCER Bass Enhancer inspired by the Little Labs Voice Of God* design, delivering focused low-end weight. Provides more than 24 dB of low-frequency boost. Frequencies below the selected threshold are attenuated to keep the enhanced low end tight and controlled. EQUALIZER 6-band parametric equalizer with real-time spectrum analyzer. Delivers precise and detailed control for cabinet tone shaping. Works as a standalone application, AudioUnit v3 effect, or Inter-App Audio effect.

Screenshots

IR Loader3 screens

Verdict

The call

The clearest difference is price: VStomp Amp HD at Free against IR Loader's $9.99. VStomp Amp HD also leads on iOS requirement (9.0 vs 15). IR Loader's advantage is in-app purchases (none vs 19) and review sentiment (50% vs 33%). On rating, ratings volume, update cadence and ads 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

CostPrice · In-app purchases · Ads · Monetization

VStomp Amp HD is free to download; IR Loader costs $9.99 up front. VStomp Amp HD sells 19 one-off in-app purchases. IR Loader asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.2 for VStomp Amp HD against 4.1 for IR Loader. Both are backed by a comparable volume of ratings — 10 and 9 respectively. Written reviews are what separate them: 33% of VStomp Amp HD's written reviews are positive against 50% of IR Loader's.

UpkeepUpdate frequency

VStomp Amp HD ships an update every 3 weeks, IR Loader every 5 weeks. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

Scorecard6 real differences · 4 level
VStomp Amp HD versus IR Loader: the parameters behind the verdict, then further details
ParameterVStomp Amp HDIR Loader
PriceFree — better$9.99
Rating4.2 (10 ratings) — better4.1 (9 ratings)
Positive reviews33.3% of reviews50.0% of reviews — better
Number of ratings10 — better9
Update frequencyEvery 3 weeks — betterEvery 5 weeks
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS9.0 — better15
Further details — not scored
Size114 MB38 MB
Age rating4+4+
DeveloperHotoneNembrini Audio

Customer experience

VStomp Amp HD

All ratings10 ratings
Positive70.0%
Neutral20.0%
Negative10.0%
Written reviews12 reviews
Positive33.3%
Neutral41.7%
Negative25.0%

IR Loader

All ratings9 ratings
Positive77.8%
Neutral0.0%
Negative22.2%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

19 purchases

VStomp Amp HD

One-time19
  • Fryman HB$0.99
  • Highway 103$0.99
  • Engle 4x12$0.99
Show 16 more
  • Eddie 2x12$0.99
  • Rector 4x12$0.99
  • Dizzle 4x12$0.99
  • Jazz 2x12$0.99
  • Eddie 51$1.99
  • Engle Saga$1.99
  • Powerengle$1.99
  • Rector Dual$1.99
  • BASS PACK$1.99
  • Jazz Clean$1.99
  • CRUNCH PACK$2.99
  • ALL-CAB PACK$4.99
  • SPECIAL LEAD PACK$4.99
  • HIGH GAIN PACK$9.99
  • ALL-AMP PACK$29.99
  • ALL-IN PACK$29.99
None

IR Loader

No in-app purchases

Questions

Is VStomp Amp HD free?
VStomp Amp HD is free to download, with in-app purchases available.
Is IR Loader free?
IR Loader costs $9.99, with no in-app purchases.
Which has better reviews, VStomp Amp HD or IR Loader?
VStomp Amp HD is rated higher. VStomp Amp HD averages 4.2 out of 5 from 10 ratings, while IR Loader averages 4.1 from 9 ratings.
Do VStomp Amp HD or IR Loader have ads?
Neither VStomp Amp HD nor IR Loader shows ads.
Which is updated more often, VStomp Amp HD or IR Loader?
VStomp Amp HD ships an update every 3 weeks, and IR Loader every 5 weeks. Most recently, VStomp Amp HD was updated on October 11, 2026 and IR Loader on October 13, 2026.

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