Comparison

Q vs ACIN VentiFlow

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

Head to head

About

Q

Features

Read full description

BUVA is de specialist in Nederland op het gebied van woonhuisventilatie. Met de aanschaf van de BUVA Q-Stream 2.0 zorgt u voor een optimaal gezond en comfortabel leefklimaat in uw woning. Met uw smartphone of tablet kunt u het ventilatiesysteem besturen en instellen naar uw wensen. U kunt het systeem tevens automatisch laten functioneren. Hierbij werkt de Q-Stream 2.0 op zijn sensoren en volledig autonoom. Wanneer het systeem (Q-Stream 2.0 in combinatie met de SmartZone) een te hoog CO2-niveau, kook-/toiletluchtjes of een vochtstijging meet, gaat het harder afzuigen. Met de app kunt u het systeem altijd handmatig hoger of lager zetten. Aan de hand van deze informatie kunt u uw dagprogramma aanpassen. De functies in de Q-Stream 2.0 app zijn: De mechanische woonhuisventilator configureren met uw smartphone en/of tablet. Uw mechanische woonhuisventilator instellen naar uw wensen. U kunt een klokprogramma instellen zodat het systeem uw leefpatroon volgt. Tijdelijk afwijken van het vooraf ingestelde programma om meer of minder te ventileren. Handmatig met de BOOST-functie het systeem snel op hoog vermogen de binnenlucht laten afzuigen.

About

ACIN VentiFlow

Features

Read full description

The VF-mk2 app from ACIN instruments receives measurement data from the ACIN VentiFlow-mk2 to your phone or tablet via Bluetooth®. The readings are recalculated for even greater accuracy. Based on the ventilation plan, the design requirements and other data, a template can be created with all rooms and valves. This template can be easily duplicated. You can then quickly measure and report, with the app helping you to balance a ventilation system. The data can be saved (CSV file) and sent from the app via an e-mail program or a messenger service. The app is partly free, the project module requires a key that can be requested from ACIN instruments (info@acin.nl) https://acin.nl

Screenshots

Q4 screens

ACIN VentiFlow3 screens

Verdict

The call

The clearest difference is iOS requirement: Q at 11.0 against ACIN VentiFlow's 13.0. On price, update cadence, ads and in-app purchases 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

Q ships an update every 4 months, ACIN VentiFlow every 2 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

Scorecard1 real difference · 5 level

Q versus ACIN VentiFlow: the parameters behind the verdict, then further details
Parameter	Q	ACIN VentiFlow
Price	Free	Free
Update frequency	Every 4 months	Every 2 months — better
Ads	No	No
In-app purchases	No	No
Devices	iPhone, iPod	iPhone, iPad, iPod — better
Requires iOS	11.0 — better	13.0
Further details — not scored
Size	26 MB	14 MB
Age rating	4+	4+
Developer	BUVA	7Lab

In-app purchases

None

Q

No in-app purchases

None

ACIN VentiFlow

No in-app purchases

Questions

Is Q free?

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

Is ACIN VentiFlow free?

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

Do Q or ACIN VentiFlow have ads?

Neither Q nor ACIN VentiFlow shows ads.

Which is updated more often, Q or ACIN VentiFlow?

Q ships an update every 4 months, and ACIN VentiFlow every 2 months. Most recently, Q was updated on October 26, 2026 and ACIN VentiFlow on October 27, 2026.