
55
BU Score
Solid
SkyPhone - Voice & Video Calls
✍️ bumetric analysis
“
SkyPhone - Voice & Video Calls is an Android app from QuadSystem Co., Ltd. in the Social category, currently rated 3.6★ across 7,800 ratings. Initial signal reads as mixed reviews: supporters praise core features while critics cite stability and value gaps.
Our BU Score puts it at 55: Solid (established niche player). For a Social app, that means established niche player.
Track changes month-over-month in the Performance section below: live snapshot history and revenue forecast included.
📊 Performance Tracking LIVE
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Rating
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Reviews
—
Forecast Revenue / mo
—
Snapshots tracked
0
since first record
Range:
💰 Forecast Revenue / mo
MODELRevenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
📈 Reviews Growth
LIVECumulative review count from first BU snapshot. Each point = a tracked update.
⭐ Rating Trend
LIVEAverage rating evolution. Updates with each new review batch.
🗓️ Snapshot Timeline
HISTORYEach bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →🔖 v1.11.0🔄 updated 4w ago📂 Social💰 Free
📝 About this app
Over 10 Million Downloads!
SkyPhone is a simple and free calling app.
Just listen and you'll soon notice the high quality sound.
You can start using the app without having to register your personal information.
Enter your profile and share your SkyPhone number with friends and family.
SkyPhone users can enjoy the clear, high-quality voice calls on SkyPhone for FREE.
Simple UI !
The Allow Contacts Only feature blocks calls from unregistered contacts.
You can connect only to those who you want to. Use SkyPhone as a dedicated phone app to make calls to your loved ones.
The Noise Cancel Feature allows you to hear the other person more clearly and talk without any problems even if you're in a large crowd of people.
If you set the Call Sound Quality setting to Low, you can enjoy talking for a long time even if you are in an area with a weak signal or your data speed is reduced.
[What's outstanding?]
- Clear voice call with a high quality sound
- No registration is required
[Main Features]
- Free voice calls
- Free video calls
- Point-Paid calls function
- Messaging function
- Allow Contacts Only function
- Do Not Disturb function
- What's New function
- SkyPhone Number Transfer function
- Incoming and Outgoing Call History
- Contact List
- Mute, speaker and noise canceling function
- Set your favorite ringtone
Click the URL below for the FAQ of SkyPhone.
https://www.skyphone.jp/en/support/
Note: Please refer to the following URL about the incoming call failures on the HUAWEI or ZenFone device.
https://www.skyphone.jp/blog/en/cat/device_en/
+++++++++++++++++
Check our updates such as our present campaign info and release info of new application version on our blog.
https://www.skyphone.jp/blog/en/
+++++++++++++++++
[Requirement]
- Android 5.0 or later
[Notice]
- Voice calls with SkyPhone are only available between SkyPhone users.
- Data communication takes place in the use of the service. You are responsible for the data charges.
- Even if your device meets the requirements, voice and video calling functions may not work correctly on some devices. In that case, please refer to the FAQ or contact our support team.
[Contact Us]
https://www.skyphone.jp/en/form/inquiry
SkyPhone is a simple and free calling app.
Just listen and you'll soon notice the high quality sound.
You can start using the app without having to register your personal information.
Enter your profile and share your SkyPhone number with friends and family.
SkyPhone users can enjoy the clear, high-quality voice calls on SkyPhone for FREE.
Simple UI !
The Allow Contacts Only feature blocks calls from unregistered contacts.
You can connect only to those who you want to. Use SkyPhone as a dedicated phone app to make calls to your loved ones.
The Noise Cancel Feature allows you to hear the other person more clearly and talk without any problems even if you're in a large crowd of people.
If you set the Call Sound Quality setting to Low, you can enjoy talking for a long time even if you are in an area with a weak signal or your data speed is reduced.
[What's outstanding?]
- Clear voice call with a high quality sound
- No registration is required
[Main Features]
- Free voice calls
- Free video calls
- Point-Paid calls function
- Messaging function
- Allow Contacts Only function
- Do Not Disturb function
- What's New function
- SkyPhone Number Transfer function
- Incoming and Outgoing Call History
- Contact List
- Mute, speaker and noise canceling function
- Set your favorite ringtone
Click the URL below for the FAQ of SkyPhone.
https://www.skyphone.jp/en/support/
Note: Please refer to the following URL about the incoming call failures on the HUAWEI or ZenFone device.
https://www.skyphone.jp/blog/en/cat/device_en/
+++++++++++++++++
Check our updates such as our present campaign info and release info of new application version on our blog.
https://www.skyphone.jp/blog/en/
+++++++++++++++++
[Requirement]
- Android 5.0 or later
[Notice]
- Voice calls with SkyPhone are only available between SkyPhone users.
- Data communication takes place in the use of the service. You are responsible for the data charges.
- Even if your device meets the requirements, voice and video calling functions may not work correctly on some devices. In that case, please refer to the FAQ or contact our support team.
[Contact Us]
https://www.skyphone.jp/en/form/inquiry
Profile & Insights
Everything we know — and don't — about this app and its company.
Identification
- App name
- SkyPhone - Voice & Video Calls
- Developer
- QuadSystem Co., Ltd.
- Bundle ID
- jp.co.quadsystem.skyphone
- App Store URL
- Open in App Store
- Category
- Social
- Content rating
- Not found
- Languages
- Not found
Company
- Website
- Not found
- Tagline
- Not found
- Description
- Not found
- Founded
- Not found
- HQ / Address
- Not found
- Employees
- Not found
- Logo
- Not found
Revenue
- Verified revenue / mo
- Not found
- AI revenue estimate / mo
- Not found
- AI annual estimate
- Not found
- ML model estimate / mo
- $933/mo
- Top-grossing rank
- Not found
- All-time revenue
- Not found
- Pricing
- Not found
Founder
- Name
- Not found
- X / Twitter
- Not found
- Not found
- GitHub
- Not found
- X followers
- Not found
- Public statements
- Not found
Funding
- Total raised
- Not found
- Last round
- Not found
- Investors
- Not found
- Crunchbase
- Not found
- AngelList
- Not found
Press & Links
- Articles found
- Not found
- Listed on
- Not found
- Blog
- Not found
- Press / News
- Not found
Contacts & Socials
- Socials
- Not found
- Not found
- Phone
- Not found
- Contact page
- Not found
- About page
- Not found
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
More by QuadSystem Co., Ltd.
View all →Full revenue analysis
Read the article-style breakdown for SkyPhone - Voice & Video Calls: category rank, percentile, growth signal, comparable apps, and how the forecast is calibrated against verified-MRR anchors in this niche.



