HollyAudio vs StringAlignPro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HollyAudio
This app enhances the functionality of Lark wireless microphones by enabling firmware upgrades and microphone parameter configuration. It aims to optimize the user experience for these specific devices.
- Firmware upgrades
- Microphone parameter configuration
- Optimized user experience
- Device management
Read full descriptionHide full description
Developed exclusively for Lark wireless microphones by Hollyland Technology, LarkSound is a perfect app to achieve multiple functions, such as device firmware upgrade and microphone parameter configuration, optimizing the user experience.
StringAlignPro
Read full descriptionHide full description
String Align Pro turns the proven string-box method into a fast, accurate alignment tool you can use right at the car — no laptop, no rig, no internet. Enter the distances you measure from the string to the front and rear of each rim, and String Align Pro does the geometry for you: per-wheel toe, total toe per axle, and the rear thrust angle relative to the car's chassis centreline. Because it works from the centreline, it reveals crabbing that front-and-rear-only numbers can hide — so the car runs true, not just "aligned." KEY FEATURES - Toe, total toe and thrust angle, calculated from simple rim measurements - Thrust angle referenced to the chassis centreline - Camber recorded per corner - Work in your units: enter distances in millimetres or inches; read toe in mm, inches or degrees - Before & After: capture a baseline, make changes, compare side by side - Clean PDF reports in your chosen units — for the car's file or the customer - Save jobs by name and reopen them any time - Fully offline — everything runs and stays on your device - No account, no sign-up, no tracking - Universal: works on iPhone and iPad BUILT FOR THE PADDOCK Whether you're setting up a track-day car in the garage or making changes between sessions, String Align Pro keeps the numbers you act on the same as the numbers you measured — and keeps a record you can share. IMPORTANT String Align Pro provides guidance based on the measurements you enter. Always verify your inputs and check results against your own engineering judgement and the vehicle manufacturer's specification. Wheel alignment affects vehicle handling and safety — setup decisions are yours. Published by RaceTracs Ltd.
Screenshots
Verdict
The clearest difference is price: HollyAudio at Free against StringAlignPro's $9.99. HollyAudio also leads on iOS requirement (13.0 vs 15.0). On update cadence, 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
HollyAudio is free to download; StringAlignPro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
HollyAudio ships an update every 3 weeks, StringAlignPro every 2 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | HollyAudio | StringAlignPro |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 2.3 (111 ratings) — better | — |
| Positive reviews | 18.0% of reviews | — |
| Number of ratings | 111 — better | — |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 168 MB | 2 MB |
| Age rating | +4 | 4+ |
| Developer | 深圳市昊一源科技有限公司 | RaceTracs Ltd |
Bugs and requests
HollyAudio
Reported bugs
12 issues- App does not detect receiver when plugged in via USB-C
- Bluetooth pairing fails repeatedly across devices
- App disconnects when user navigates to other applications
- Receiver not recognized on iPhone 15 and iPhone 16 models
- Firmware update loop causing app freeze
Show 7 moreShow fewer
- Help button non-functional
- App fails to recognize devices after iOS updates
- Pairing instructions cause device to power cycle instead of pair
- App not registering Local Network Access permission on iOS
- Playback functionality disabled when receiver is connected
- Inconsistent connection across multiple device types
- App crashes during initial setup and connection attempts
Requested features
10 requests- Volume slider instead of preset levels (high/medium/low)
- Individual volume control for each microphone
- Keep app running in background without disconnecting
- Auto mono/stereo switching based on microphone count
- Mac/desktop application support
Show 5 moreShow fewer
- Wireless shotgun microphone option
- Better contextual guidance during setup
- Accessible help system that actually functions
- Live audio playback through speaker
- Troubleshooting prompts and diagnostic tools
StringAlignPro
Not enough reviews yet to summarise bugs or requests.
In-app purchases
HollyAudio
No in-app purchases
StringAlignPro
No in-app purchases
Questions
Is HollyAudio free?
Is StringAlignPro free?
Do HollyAudio or StringAlignPro have ads?
Which is updated more often, HollyAudio or StringAlignPro?
Other comparisons















