Comparison

Cali Axis Guitar Amplifier vs Loop Slower

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

Head to head
About

Cali Axis Guitar Amplifier

This app offers a versatile guitar amplifier simulation with multiple preamp modes, an FX section, and a power amp. It includes digital delay, analog modulations, ambient reverb, and a noise gate for shaping your sound. Works as a standalone app or with other audio applications.

Highlights
  • Multiple preamp modes
  • Adjustable FX section
  • Virtual EL34 power tubes
  • Digital delay with filter and offset
  • Analog Chorus or Tremolo
  • Ambient Hall reverb
  • Noise gate and studio compressor
Features
Read full description

“Cali Axis is an arsenal of the most powerful guitar tones now available in standalone and plugin format” PREAMPLIFIER Nembrini Audio Cali Axis All Tube Guitar Amplifier plugin is based on Mesa Boogie TriAxis* preamplifier. Eight separate modes deliver the elusive creamy gain of the Mk I, the heralded focus of the Mk I, the scooped Rhythm of the Mk IV, and a modified British lead mode. But these are just a few of the classic sounds at your fingertips. FX SECTION Select, enable and change the order of the single FXs. POWER AMPLIFIER Powered by four EL34 virtual tubes with presence, resonance, volume and power switch in class AB push-pull configuration. MODERN button change the negative feedback in a way to have a more “modern” presence behaviour. DIGITAL DELAY FILTER make the delay Lo-Fi and OFFSET create a time offset in left/right delay sections ANALOG MODULATIONS select Chorus or Tremolo modulation AMBIENT REVERB Hall reverb algorithm FILTER A/B TIGHT : Clockwise rotation reduces low frequency content tightening the low range, suitable for 7/8 strings guitars. RUMBLING : Clockwise rotation reduces low frequency content. HARSH : Clockwise rotation reduces high frequency content. ANALOG NOISE GATE tuned for guitar and bass with GATE speed control STUDIO COMPRESSOR keep your dynamics in check, whether just thickening the sound or keeping levels consistent Works as a standalone app, AudioUnit v3 effect, or Inter-App Audio effect. Legal Disclaimer: TriAxis is a registered trademark of Mesa Engineering. Nembrini Audio Cali Axis was developed by Nembrini Audio SRL based on its own modelling techniques. Mesa Engineering has not endorsed nor sponsored the Nembrini Audio Cali Axis in any manner, nor licensed any intellectual property for use in this product.

About

Loop Slower

Features
Read full description

A simple tool that allows you to loop a section of a song and adjust the playback speed. Perfect for anyone who’s practicing an instrument and want to jam along at desired speed, or when transcribing a song. The app offers: - Changing playback speed - Looping particular section of a song - Saving loops and speed per song automatically - Searching and playing songs from your library (on device) - Searching and playing songs on Apple Music* - Recently played songs for quick access * playing full songs on Apple Music requires an active Apple Music subscription.

Screenshots

Cali Axis Guitar Amplifier1 screens
Loop Slower4 screens

Verdict

The call

The clearest difference is price: Loop Slower at $0.99 against Cali Axis Guitar Amplifier's $9.99. Loop Slower also leads on update cadence (every 12 months vs every 38 months). Cali Axis Guitar Amplifier's advantage is iOS requirement (15 vs 17.1). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

Cali Axis Guitar Amplifier costs $9.99 and Loop Slower $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Cali Axis Guitar Amplifier ships an update every 38 months, Loop Slower every 12 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard3 real differences · 7 level
Cali Axis Guitar Amplifier versus Loop Slower: the parameters behind the verdict, then further details
ParameterCali Axis Guitar AmplifierLoop Slower
Price$9.99$0.99 — better
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 38 monthsEvery 12 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15 — better17.1
Further details — not scored
Size29 MB5 MB
Age rating+49+
DeveloperNembrini AudioAlgirdas Gridziuska

In-app purchases

None

Cali Axis Guitar Amplifier

No in-app purchases

None

Loop Slower

No in-app purchases

Questions

Is Cali Axis Guitar Amplifier free?
Cali Axis Guitar Amplifier costs $9.99, with no in-app purchases.
Is Loop Slower free?
Loop Slower costs $0.99, with no in-app purchases.
Do Cali Axis Guitar Amplifier or Loop Slower have ads?
Neither Cali Axis Guitar Amplifier nor Loop Slower shows ads.
Which is updated more often, Cali Axis Guitar Amplifier or Loop Slower?
Cali Axis Guitar Amplifier ships an update every 38 months, and Loop Slower every 12 months. Most recently, Cali Axis Guitar Amplifier was updated on November 3, 2026 and Loop Slower on October 30, 2026.

Other comparisons