Comparison

EDSP31 vs Airplus

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

Head to head

★ 3.02 ratingsView app →

About

EDSP31

Features

Read full description

Products features: 1.DSP settings and adjustments made with smart phone APP 2.Selectable Audio Input：High Level or Low Level 3.8 Independently assignable low-level outputs 4.Selectable crossover slopes（6,12,18,24,30,36,42,48 dB/octave） 5.31band graphic EQ with fine tuning 6.Adjustable high, band-pass, or low-pass filters（20KHz-20Hz） 7.Phase adjustment：switchable 0/180 degrees on all output channels

About

Airplus

This utility app allows for the debugging and adjustment of car audio device parameters. It connects via Bluetooth to modify settings and optimize sound output.

Highlights

App debugging for car audio
Bluetooth connectivity
Parameter adjustment
Device settings modification

Features

Read full description

Airplus P12 is an app debugging software for car audio devices, which adjusts various parameters of the device through Bluetooth connection.

Screenshots

EDSP314 screens

Airplus4 screens

Verdict

The call

The clearest difference is update cadence: EDSP31 at every 6 weeks against Airplus's every 5 months. EDSP31 also leads on iOS requirement (9.0 vs 15.0). 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

EDSP31 ships an update every 6 weeks, Airplus every 5 months. The most recent releases landed on October 25, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level

EDSP31 versus Airplus: the parameters behind the verdict, then further details
Parameter	EDSP31	Airplus
Price	Free	Free
Rating	—	3.0 (2 ratings) — better
Positive reviews	—	100.0% of reviews
Number of ratings	—	2 — better
Update frequency	Every 6 weeks — better	Every 5 months
Ads	No	No
In-app purchases	No	No
Monetization	—	Free
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	9.0 — better	15.0
Further details — not scored
Size	33 MB	65 MB
Age rating	4+	4+
Developer	DB Research L.L.P.	Guang Dong Sound Power

In-app purchases

None

EDSP31

No in-app purchases

None

Airplus

No in-app purchases

Questions

Is EDSP31 free?

EDSP31 is free to download, with no in-app purchases.

Is Airplus free?

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

Do EDSP31 or Airplus have ads?

Neither EDSP31 nor Airplus shows ads.

Which is updated more often, EDSP31 or Airplus?

EDSP31 ships an update every 6 weeks, and Airplus every 5 months. Most recently, EDSP31 was updated on October 25, 2026 and Airplus on November 4, 2026.