Subjective Visual Vertical SVV Downloads & RevenueSubjective Visual Vertical SVV · App Store
Not in any tracked top chart right now.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperMy Call Bag LLC
CategoryMedical
Price3.99 USD
Released
Rating★ 0.0 (0)
Version1.0
Age rating4+
First seen by us
5 Oct 2026
5 Oct 2026Subjective Visual Vertical SVV update history & changes
Last change · 9 events since 16 Jun 2026Full timeline ↓📈Dropped out of every chart we track📈Entered the top 100🆕First spotted by AppInsider🆕Its developer released another app: Laryngoscope Simulator 3D📦Version 1.0
Full timeline · 9 events
- 📈Subjective Visual Vertical SVV dropped out of every chart we trackLast seen 1 Nov
- 📈Subjective Visual Vertical SVV entered the top 100Top Paid · Medical · US
- 📈Subjective Visual Vertical SVV charting in a new countryUnited States
- 📈Subjective Visual Vertical SVV entered the top 100Top Paid · Medical · IT
- 📈Subjective Visual Vertical SVV charting in a new countryItaly
- 🆕Subjective Visual Vertical SVV first spotted by AppInsider#23 in Top Paid · Medical · United Kingdom
- 🆕Subjective Visual Vertical SVV: its developer released another app: Laryngoscope Simulator 3D
- 📦Subjective Visual Vertical SVV version 1.0No release notes
- 🆕Subjective Visual Vertical SVV released on the App Store
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
0.0 ★
0 ratings
Measured
Subjective Visual Vertical SVV on the App Store
App details
App ID
6778656381
Publisher
My Call Bag LLC
On the store since
Jun 2026
Under a year
Minimum OS
iOS 26.4+
iPhone 11 and later
Devices
iPhone · iPad
Content rating
4+
Languages
1
EN
Size
2 MB
Also listed in
Health & Fitness
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Not charting right now. | ||
Ratings
App Store, worldwide.
Rating
0.0 ★
0 ratings
Measured
Ratings
0
Measured
About Subjective Visual Vertical SVV
Subjective Visual Vertical turns your iPhone into a simple tool for checking how
well a person can set a line to true vertical using sight alone — a quick way to
screen for inner-ear (otolith) and balance differences.
The app shows a line and uses the phone's motion sensors to know which way is
truly vertical. The patient adjusts the line until it looks upright to them, and
the app reports how far that is from true vertical, in degrees.
TWO WAYS TO TEST
• Bucket mode — fix the phone inside the base of a bucket with reusable putty,
screen facing in. The patient holds the open rim to their face so the room is
hidden, then turns the bucket until the line looks straight.
• VR mode — drop the phone into a VR viewer or Google Cardboard. The line is
shown to each eye in a split view. The patient turns the line with on-screen
buttons or a Bluetooth remote and locks it in when it looks vertical.
FLEXIBLE TESTING
• Choose the right eye (OD), left eye (OS), both eyes (OU), or all in turn.
• Run a single measurement or repeat each condition several times.
• Set the trial length and the pause between trials.
• Repeated trials are averaged automatically, with the standard deviation shown.
CLEAR RESULTS
• See the deviation in degrees for each eye, with a simple diagram of the
perceived vs. true vertical.
• Share the numbers as text, with no image attached.
• In bucket mode you can record a photo or video of the trial with the true and
perceived vertical lines drawn over it, and a date-and-time label. Media is
saved to your own Photo Library.
• Customisable line and background colours.
• Right eye (OD) listed first, by convention.
• Works with a Bluetooth remote so the line can be turned while the phone is
sealed in a viewer.
• Everything runs on the device. No account, no sign-in, no tracking.
IMPORTANT
This app is for educational purposes only and should not be used for clinical
diagnosis or treatment decisions. It is not a medical device and has not been
validated for clinical use. Always consult qualified healthcare professionals
for medical advice.
well a person can set a line to true vertical using sight alone — a quick way to
screen for inner-ear (otolith) and balance differences.
The app shows a line and uses the phone's motion sensors to know which way is
truly vertical. The patient adjusts the line until it looks upright to them, and
the app reports how far that is from true vertical, in degrees.
TWO WAYS TO TEST
• Bucket mode — fix the phone inside the base of a bucket with reusable putty,
screen facing in. The patient holds the open rim to their face so the room is
hidden, then turns the bucket until the line looks straight.
• VR mode — drop the phone into a VR viewer or Google Cardboard. The line is
shown to each eye in a split view. The patient turns the line with on-screen
buttons or a Bluetooth remote and locks it in when it looks vertical.
FLEXIBLE TESTING
• Choose the right eye (OD), left eye (OS), both eyes (OU), or all in turn.
• Run a single measurement or repeat each condition several times.
• Set the trial length and the pause between trials.
• Repeated trials are averaged automatically, with the standard deviation shown.
CLEAR RESULTS
• See the deviation in degrees for each eye, with a simple diagram of the
perceived vs. true vertical.
• Share the numbers as text, with no image attached.
• In bucket mode you can record a photo or video of the trial with the true and
perceived vertical lines drawn over it, and a date-and-time label. Media is
saved to your own Photo Library.
• Customisable line and background colours.
• Right eye (OD) listed first, by convention.
• Works with a Bluetooth remote so the line can be turned while the phone is
sealed in a viewer.
• Everything runs on the device. No account, no sign-in, no tracking.
IMPORTANT
This app is for educational purposes only and should not be used for clinical
diagnosis or treatment decisions. It is not a medical device and has not been
validated for clinical use. Always consult qualified healthcare professionals
for medical advice.
Latest updates
1.0
