ASO Lab
Google Play app · Communication
OTO Free International Call
by openvacs
OTO Free International Call is a communication app by openvacs on Google Play with 5,000,000+ installs and an average rating of 3.5 from 24,546 ratings. On September 27, 2026 it ranked #84 in the Top Free Communication chart in South Korea.
A free international call service with no international call charges
Full analysis: keywords, competitors, adsGoogle Play ↗
Key facts
- Developer
- openvacs
- Category
- Communication
- Installs
- 5,000,000+
- Rating
- ★ 3.5 / 5
- Ratings
- 24,546
- First released
- Aug 23, 2010
- Tracked by ASO Lab since
- September 27, 2026
- Package
com.openvacs.android.oto
Top Free ranks by country
| Country | Chart | Rank |
|---|---|---|
| South Korea | Top Free · Communication | #84 |
Rating and installs history
| Date | Rating | Ratings | Installs | Version |
|---|---|---|---|---|
| September 27, 2026 | 3.53 | 24,546 | 5,000,000+ | 3.1.1 |
Apps ranked near OTO Free International Call
All Email ConnectAI Email & Access · ★ 4.0
FC INFOfcinfo · ★ 4.7
FREE ADBLOCKER BROWSERAdblock – Rocketshield Browser Technology Limited · ★ 4.5
Messenger SMS - Text MessagesSMS Messenger, Text App · ★ 4.6
카나나 - 초개인화 그룹 AIKakao Corp. · ★ 3.0
ContactsMessages SMS Text Messenger · ★ 3.5
imo-International Calls & Chatimo.im · ★ 4.4
thePAY-All in one Recharge AppQQTRADE Co., Ltd · ★ 4.8About this data
Figures come from the public Google Play listing and the Top Free charts that ASO Lab saves every day. Install numbers are the ranges Google Play shows, not exact counts. For keyword positions, competitors and ad campaigns, open the full analysis.