ACIN VentiFlow vs fonio.ai
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ACIN VentiFlow
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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
fonio.ai
This app allows users to make and receive business calls using their existing Fonio phone numbers. It provides features like selecting outgoing caller ID, viewing call history, and searching contacts. An active Fonio business account and internet connection are required for use.
- Make and answer business calls
- Select outgoing caller ID
- View call history
- Search and call contacts
- Manage Fonio phone numbers
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Fonio keeps your business calling with you. Sign in with your existing Fonio account to make and receive calls through your Fonio phone numbers. With Fonio you can: • Make and answer business calls • Choose the Fonio number shown for outgoing calls • View recent incoming and outgoing calls • Search and call Fonio contacts, phone contacts, and teammates Requirements: • An existing Fonio business account and internet connection are required Fonio is designed for business use. Availability of phone numbers and features depends on your Fonio account and device. https://www.fonio.ai/en/terms-and-conditions
Screenshots
Verdict
The clearest difference is update cadence: fonio.ai at every 3 days against ACIN VentiFlow's every 2 months. ACIN VentiFlow's advantage is device support (3 vs 1) and iOS requirement (13.0 vs 16.4). On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ACIN VentiFlow ships an update every 2 months, fonio.ai every 3 days. The most recent releases landed on September 20, 2026 and October 7, 2026 respectively.
| Parameter | ACIN VentiFlow | fonio.ai |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 14 MB | 60 MB |
| Age rating | 4+ | 17+ |
| Developer | 7Lab | fonio GmbH |
In-app purchases
ACIN VentiFlow
No in-app purchases
fonio.ai
No in-app purchases
