Auto Gesture Detection vs Air Flow Conversion Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Auto Gesture Detection
This utility app allows users to trigger various actions by performing specific gestures on their device screen. It can record video, take photos, play sounds, convert text to speech, and more, all activated by gestures.
- Detect nine types of gestures
- Record video, photos, and sound
- Play sound and music
- Convert text notes to speech
- Report time and location verbally
- Turn on device light
- Customizable gesture reactions
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Introduction Auto Gesture Detection could provide eleven kinds of reactions according to the type of Gestures. We only need to make the gestures on the whole screen, the reaction will be fired. Features 1. Detect the nine kinds of Gestures:Rotation, Pan, Long Press, Double Tap, Pinch, Swipe Up,Swipe Down, Swipe Left, Swipe Right/ The gesture of Pan has the lowest priority. That means, only other gestures are not detected, the App will think whether this gesture is Pan gesture. 2. Record video by the indicted gesture. 3. Take photo by the indicted gesture 4.Record sound by the indicted gesture 5.Play sound and music by the indicted gesture 6. Talk the text notes by the indicted gesture. 7 Report the current time by talking in English by the indicted gesture. 8 Talk the location information such as the latitude ,longitude, name of location. 9 Turn on the light 10 Talking counter by gestures detection 11 Talking counter by sound detection 12 Talking counter by proximity detection Buttons 1.Menu button: Tap the menu button at the upper left corner, we could add the text notes,check the video clip, the photo, the sound file ,and select the music file for playing.The Video and the photo will be saved to the device album.The record sound will be saved to the local folder. 2 Setting button: Tap the setting button at the upper left corner, we could set our preferences. How to set the preferences? From the setting view, we could set many preferences: 1. we could select the reaction for the specific gesture.The reaction could be one of the six kinds of reactions. 2 In the setting view, we also could set the max duration of the record video and set the max duration of the record sound file. 3 we could select the camera devices, set the video quality, and decide whether need to flash when taking the photo from the rear camera 4 We also could indict the talking volume for the talking notes. And change the talking speed. 5 We could select the sound codec for the record sound file, set the sample rate of sound data, and set the sound channel for one channel or two channels. Menu list for the sound file, video file, photos and the notes of talking. When we tap the menu button at the upper left corner, the menu will be displayed. This menu includes five items. 1 Video Clips. Tap this item, we could view the video files list in the device album and view the video content. 2 Sound file. Tap this item, we will see the sound file list view. In this view, we could play the sound , delete the sound file and rename the sound file. The sound duration and the file size will be displayed. 3 Photo Items. Tap this item, we could see the photo list with the small photo preview. When we tap the photo item, this view will close. 4 Select a sound file for playing. Tap this item, we could select the sound file for the playing reaction. The sound files includes the file record by the recording reaction or the sound files imported from the iTune file sharing. 5 Talk Notes. Tap this item, the talking notes view will be displayed. From this view, we could add the new text notes by input the text and select the languages. Import the text from the pasteboard or from the text file from the iTune file sharing. We also could listen the talking notes one by one by tapping the button of Talking All. In this view, we could remove the notes by tapping the edit button at the upper right corner.
Air Flow Conversion Calculator
Easily calculate air velocity and airflow volume for various duct types. Input dimensions and units, and get instant results for HVAC and ventilation applications.
- Calculate air velocity and airflow volume
- Support for circular and rectangular ducts
- Multiple unit options for velocity, volume, and dimensions
- Instant result display
- Useful for HVAC and ventilation
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Air Flow Conversion Calculator calculate the rate of displacement of air or gas at a specific location. - Enter the air velocity or volume airflow. - Choose circular or rectangular duct and type the required dimension(s), then select the appropriate units. - Result will be displayed instantly. Airflow Value:- Velocity Units: -fl/min (LFM) -m/s -miles/hr (MPH) Volume Airflow Units: -ft3/min (CFM) -m3/hr -L/s Dimension Units: -in -foot -mm -cm -m Air velocity (distance traveled per unit of time) is usually expressed in Linear Feet per Minute (LFM). By multiplying air velocity by the cross section area of a duct, you can determine the air volume flowing past a point in the duct per unit of time. Volume flow is usually measured in Cubic Feet per Minute (CFM). Example Concept of Air Velocity can be used in air conditioning, heating and ventilating work. Thanks for your support and do visit nitrio.com for more apps for your iOS devices.
Screenshots
Verdict
The clearest difference is rating: Air Flow Conversion Calculator at 3.5 against Auto Gesture Detection's 3.0. Air Flow Conversion Calculator also leads on ratings volume (11 vs 1). Auto Gesture Detection's advantage is update cadence (every 3 months vs every 47 months) and price ($0.99 vs $2.99). On review sentiment, ads, in-app purchases and monetization model 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
Auto Gesture Detection costs $0.99 and Air Flow Conversion Calculator $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Air Flow Conversion Calculator holds the better App Store score, 3.5 against 3.0. That said, the two scores are not equally well evidenced: Air Flow Conversion Calculator has 11 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.
Auto Gesture Detection ships an update every 3 months, Air Flow Conversion Calculator every 47 months. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.
| Parameter | Auto Gesture Detection | Air Flow Conversion Calculator |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 3.0 (1 ratings) | 3.5 (11 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 1 | 11 — better |
| Update frequency | Every 3 months — better | Every 47 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 12.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | 方 沈 | Nitrio |
Customer experience
Auto Gesture Detection
Air Flow Conversion Calculator
In-app purchases
Auto Gesture Detection
No in-app purchases
Air Flow Conversion Calculator
No in-app purchases
Questions
Is Auto Gesture Detection free?
Is Air Flow Conversion Calculator free?
Which has better reviews, Auto Gesture Detection or Air Flow Conversion Calculator?
Do Auto Gesture Detection or Air Flow Conversion Calculator have ads?
Which is updated more often, Auto Gesture Detection or Air Flow Conversion Calculator?
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