Version history
Doppler Effect Calculator
46
ASO score
Text
63/100
Reviews
0/100
Graphic
60/100
Other
0/100
App Rating
1
Votes
3
App Age
9y 9m
Last Update
Jan 10, 2024
Compare with Category Top Apps
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Metrics
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Current App
|
Category Top Average
|
Difference
|
|---|---|---|---|
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Rating
|
0
|
4.65
|
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|
Number of Ratings (Voted)
|
0
|
3.2M
|
|
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App Age
|
9y 8m
|
7y 8m
|
+26%
|
|
Price
|
$3
|
$0
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|
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In-app Purchases Price
|
$0
|
$69
|
|
|
Update Frequency
|
704d
|
27d
|
+2 481%
|
|
Title Length
|
25
|
23
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+9%
|
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Subtitle Length
|
19
|
28
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-32%
|
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Description Length
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1 556
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3 038
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-49%
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Number of Screenshots
|
860
|
1325
|
-35
%
|
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Size
|
8MB
|
284MB
|
-97
%
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Category Ranking in United States
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Last year
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| Top | Dec 06, 2025 | Dec 13, 2025 |
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Ranking Keywords in United States
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Analyze this and other apps using Asolytics tools
Text ASO
Title
(
Characters:
25
of 30
)
Doppler Effect Calculator
Subtitle
(
Characters:
19
of 30
)
Change in Frequency
Description
(
Characters:
1556
of 4000
)
Doppler Effect Calculator is a physics/math calculator to find the frequency of sound if either the source of sound or the observer is moving.
You hear the high pitch of the siren of the approaching ambulance and notice that its pitch drops suddenly as the ambulance passes you. That is called the Doppler effect. The Doppler effect (or the Doppler shift) is the change in frequency or wavelength of a wave in relation to the observer who is moving relative to the wave source.
Features:
- Instant calculation
- Results are copyable to other apps
- Formulas are included as reference
- Supports up to 16 decimal places
- Supports various units for each input
A common example of Doppler shift is the change of pitch heard when a vehicle sounding a horn approaches and recedes from an observer. Compared to the emitted frequency, the received frequency is higher during the approach, identical at the instant of passing by, and lower during the recession.
Doppler effect equation:
f = f0 * (v + vr) / (v + vs)
where:
f - observed frequency of the wave, expressed in Hz
f0 - frequency of the emitted wave, also expressed in Hz
v - velocity of the waves in the medium. By default, our Doppler effect calculator has this value set to 343.2 m/s, the speed of sound propagating in the air
vr - velocity of the receiver. It is positive if the receiver is moving towards the source
vs - velocity of the source. It is positive if the source is moving away from the observer
Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.}
Read more
Other
Additional Information
| Rating: | |
| Voted: | 3 |
| App Store Link: | |
| Price: | 2.99 $ |
| Website: | |
| Email: | - |
| Privacy Policy: | |
| Categories: | Productivity, Utilities |
| Size: | 8MB |
| App Age: | 9 years 9 months |
| Release Date: | Mar 29, 2016 |
| Last Update: | Jan 10, 2024 |
| Version: | 1.2 |
Version history
1.2
Jan 10, 2024
- Updated for the newest devices.
- Minor UI update.
- Minor bugs fixed.
1.1
Nov 02, 2020
- Update for Newest Devices
- Bug Fixed
