Comparison

ZP 8.4AMP vs MDA931

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

Head to head

About

ZP 8.4AMP

Features

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ZP 8.4 AMP The ZP 8.4 AMP app allows the user to full control their ZEVOX ZP 8.4 AMP at the Setting section to contour audio system to fit your tastes with the ability to apply crossovers, 31 bands of parametric/graphic EQ independent per channel, delay, assignable inputs/outputs, USB audio player and even stream music, The ZP 8.4 AMP is the right path to make great sound in your car.

About

MDA931

Features

Read full description

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.

Screenshots

ZP 8.4AMP3 screens

MDA9314 screens

Verdict

The call

The clearest difference is update cadence: MDA931 at every 2 months against ZP 8.4AMP's every 17 months. ZP 8.4AMP's advantage is iOS requirement (9.0 vs 12.0). On price, 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

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

UpkeepUpdate frequency

ZP 8.4AMP ships an update every 17 months, MDA931 every 2 months. Both last shipped on October 27, 2026.

Scorecard2 real differences · 4 level

ZP 8.4AMP versus MDA931: the parameters behind the verdict, then further details
Parameter	ZP 8.4AMP	MDA931
Price	Free	Free
Update frequency	Every 17 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPod
Requires iOS	9.0 — better	12.0
Further details — not scored
Size	2 MB	4 MB
Age rating	4+	4+
Developer	Maslim Djanuanto	杏生卢

In-app purchases

None

ZP 8.4AMP

No in-app purchases

None

MDA931

No in-app purchases

Questions

Is ZP 8.4AMP free?

ZP 8.4AMP is free to download, with no in-app purchases.

Is MDA931 free?

MDA931 is free to download, with no in-app purchases.

Do ZP 8.4AMP or MDA931 have ads?

Neither ZP 8.4AMP nor MDA931 shows ads.

Which is updated more often, ZP 8.4AMP or MDA931?

ZP 8.4AMP ships an update every 17 months, and MDA931 every 2 months. Most recently, ZP 8.4AMP was updated on October 27, 2026 and MDA931 on October 27, 2026.