HSA vs Plus
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HSA
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After connecting App to Car Amplifier with Integrated DSP, EQ, BASS, TIME ALIGNMENT, PHASE, MUTE, FILTER , SAVE SOUND SETTING TO PHONE, SAVE SOUND SETTING TO AMPLIFIER, LOAD SOUND SETTING FROM PHONE, RCA OUTPUT etc could be controlled through this App. How to use: 1.Install App and turn on power of car 2. Turn on Bluetooth on your iPhone 3,Open App and wait for around 5 seconds, then click “Connect” icon in left corner of bottom. Amplifier will be connected to App automatically. 4.DIY you preferred sound and then click “Save to AMP” icon to save. Or click “ Save to Phone” to save. Note： 1.Do not exit app during saving and do not turn off power supply, program may be shut down caused by this.
Plus
Calculate optimal tire pressure for your vehicle based on selectable tire standards and pressure units. Proper inflation enhances performance, prevents flats, saves fuel, and supports sustainability goals.
- Selectable tire standards (XL, RFD, ETRTO, TRA, JATMA)
- Switchable pressure units (kPa, bar, kg/cm2, psi)
- Optimize tire performance
- Prevent flat tires
- Save fuel
- Support SDGs 12 and 13
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>>>Selectable tire standards. - XL_ExtraLoad - RFD_Reinforced - ETRTO_European - TRA_American - JATMA_Japanese >>>Switchable Pressure Units. - kpa - bar - kg/cm2 - psi >>>The correct tire pressure will give you benefits. - Bring out full performance. - Prevent flat tire. - Save gas. - Achieve SDGs 12 and 13. >>>To keep best condition. - Check the tire pressures at least per month. Let's enjoy comfortable and safety drive !
Screenshots
Verdict
The clearest difference is ads: HSA at none against Plus's shown. HSA also leads on iOS requirement (9.0 vs 15.6). On price, update cadence, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HSA ships an update every 3 weeks, Plus every 2 weeks. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | HSA | Plus |
|---|---|---|
| Price | Free | Free |
| Rating | — | 3.3 (3 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 3 — better |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 6 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | 杏生 卢 | Hidenori Nakashima |
In-app purchases
HSA
No in-app purchases
Plus
No in-app purchases
