Comparison

ControlPRO vs AX

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

Head to head
About

ControlPRO

This application allows users to customize their vehicle's original steering wheel controls to operate aftermarket radio functions. It requires a specific steering wheel control interface from Pacific Accessory Corporation.

Highlights
  • Custom configuration of steering wheel controls
  • Operate aftermarket radio functions
  • Compatibility with ControlPRO SWC interfaces
  • Vehicle-specific control mapping
Features
Read full description

ControlPRO app is designed to be used with the ControlPRO Steering Wheel Control interfaces from Pacific Accessory Corporation (PAC). When connected to a ControlPRO SWC interface, this app will provide the ability to custom configure the vehicle's original steering wheel controls, to operate the functions of the aftermarket radio. Visit www.pac-audio.com/ControlPRO for additional information.

About

AX

Enhance your car's audio system with this digital signal processor. It offers an all-in-one solution for various audio setups, allowing for improved sound quality and subwoofer integration while preserving factory features. Control settings easily via a smartphone app.

Highlights
  • Digital Signal Processor
  • Subwoofer integration
  • Preserves OE features
  • Bluetooth smartphone control
  • Vehicle-specific T-Harnesses (sold separately)
  • All-in-one solution
Features
Read full description

Axxess, a leader in vehicle interfacing, has once again set the industry standard by developing a cost effective option for customers desiring to improve vehicle sound quality with a Digital Signal Processor. The AX-DSP-XL presents an all-in-one solution for a variety of car audio system setups, from fixed level output (digital) to analog OE systems, and even adding a subwoofer to an OE system. Our before the amp solution is designed to allow the installers the option to remove the factory amplifier or to add a subwoofer all while maintaining the OE features and controls of the radio. Whether you have a Digital or Analog factory amplifier system, the AX-DSP-XL has you covered. Unlike other digital signal processors on the market, the AX-DSP-XL includes a built-in Axxess Interface. More reasons installers will love the new Axxess DSP is for its quick and simple installation behind the factory radio, due to its small footprint. Features and settings are easily controlled via Bluetooth from our free Smartphone application. To further cut down on install time, Axxess has engineered vehicle specific T-Harnesses (sold separately), that make installation even faster and easier, with no need to cut any wires. The Axxess Digital Signal Processor provides a smart and cost efficient way to provide improved sound quality that customers want when upgrading their vehicle sound systems.

Screenshots

ControlPRO1 screens
AX3 screens

Verdict

The call

ControlPRO and AX both sit at 2.4 stars, but that hides the real split: 67% of ControlPRO's written reviews are positive against 0% of AX's. ControlPRO also leads on iOS requirement (9.0 vs 12.1). On price, rating, ratings volume and update cadence 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

ControlPRO holds the better App Store score, 2.4 against 2.2. Both are backed by a comparable volume of ratings — 10 and 5 respectively. Written reviews point the same way: 67% of ControlPRO's written reviews are positive against 0% of AX's.

UpkeepUpdate frequency

ControlPRO ships an update every 3 months, AX every 2 months. The most recent releases landed on October 6, 2026 and October 3, 2026 respectively.

Scorecard2 real differences · 8 level
ControlPRO versus AX: the parameters behind the verdict, then further details
ParameterControlPROAX
PriceFreeFree
Rating2.4 (10 ratings) — better2.2 (5 ratings)
Positive reviews66.7% of reviews — better0.0% of reviews
Number of ratings10 — better5
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better12.1
Further details — not scored
Size10 MB10 MB
Age rating4+4+
DeveloperAAMP GlobalMetra Electronics Corp.

Customer experience

ControlPRO

All ratings10 ratings
Positive30.0%
Neutral10.0%
Negative60.0%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

AX

All ratings5 ratings
Positive20.0%
Neutral0.0%
Negative80.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

ControlPRO

No in-app purchases

None

AX

No in-app purchases

Questions

Is ControlPRO free?
ControlPRO is free to download, with no in-app purchases.
Is AX free?
AX is free to download, with no in-app purchases.
Which has better reviews, ControlPRO or AX?
ControlPRO is rated higher. ControlPRO averages 2.4 out of 5 from 10 ratings, while AX averages 2.2 from 5 ratings.
Do ControlPRO or AX have ads?
Neither ControlPRO nor AX shows ads.
Which is updated more often, ControlPRO or AX?
ControlPRO ships an update every 3 months, and AX every 2 months. Most recently, ControlPRO was updated on October 6, 2026 and AX on October 3, 2026.

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