AX vs AUTHOR FLASHER
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Digital Signal Processor
- Subwoofer integration
- Preserves OE features
- Bluetooth smartphone control
- Vehicle-specific T-Harnesses (sold separately)
- All-in-one solution
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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.
AUTHOR FLASHER
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AUTHOR FLASHER is a mobile app for professional installers and technical specialists designed to update firmware and configure AUTHOR devices through a smartphone. The app is the mobile version of the AUTHOR FLASHER desktop program and provides access to all the necessary features in a convenient format. After authorization through the user account on AUTHOR’s service portal, a device can be connected and all the necessary operations can be performed, such as viewing information, updating firmware, and configuring parameters. Key features: • Display technical information about the device • Update the firmware • Configure the device’s available features Access and safety: • Only for authorized users of AUTHOR’s service portal • Requires an internet connection • Device must be switched to firmware update mode before connecting Compatibility: • iOS 15.0 and higher Supported devices: • AUTHOR IGLA, AUTHOR ALARM, AUTHOR IGLA LF, AUTHOR IGLA C (nRF 8.0+, STM 3.5.0+) • AUTHOR AUTOSTART (nRF 8.0+, STM 1.3+) • AUTHOR KLB (nRF 8.0+, STM 3.5+) • AUTHOR IGLA FD, AUTHOR ALARM FD. AUTHOR FLASHER is a tool for working efficiently with AUTHOR devices in a professional environment.
Screenshots
Verdict
AX and AUTHOR FLASHER are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 7, 2026 and September 10, 2026 respectively.
| Parameter | AX | AUTHOR FLASHER |
|---|---|---|
| Price | Free | Free |
| Rating | 2.2 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.1 — better | 13.0 |
| Further details — not scored | ||
| Size | 10 MB | 32 MB |
| Age rating | 4+ | 17+ |
| Developer | Metra Electronics Corp. | AUTHOR-ALARM |
In-app purchases
AX
No in-app purchases
AUTHOR FLASHER
No in-app purchases







