| App | Installs | Publisher | Publisher Email | Publisher Social | Publisher Website |
| 962M | LINE (LY Corporation) | *****@line.me |  | https://play.game.line.me/ | |
| 311M | Tango | *****@tango.me |  | http://www.tango.me/ | |
| 138M | Direct Cursus Computer Systems Trading LLC | *****@support.yandex.ru |  | https://ya.ru/ | |
| 134M | AT&T Services, Inc. | *****@list.att.com |  | http://att.com/getuversemobile | |
| 126M | Anhui Huami Information Technology Co.,Ltd. | *****@gmail.com | | http://www.zepp.com/tennis/ | |
| 115M | 99 Tecnologia LTDA | *****@99app.com | - | https://99app.com/r/driver/play-store | |
| 112M | IQ Option | *****@iqoption.com | - | http://iqoption.com/ | |
| 110M | Groupon, Inc. | *****@groupon.com | | http://www.groupon.com/support | |
| 103M | PicPay | *****@picpay.com | | http://www.picpay.com/empresas | |
| 98M | TextNow, Inc. | *****@2ndline.co | | http://www.2ndline.co/ |
Full list contains 52K apps using Card.Io in the U.S, of which 37K are currently active and 12K have been updated over the past year, with publisher contacts included.
List updated on 4th May 2024
The Card.Io SDK is a Development Tools SDK provided by PayPal Holdings, Inc.. By integrated this SDK, apps have the capabilities of Scan Recognition. Get more details by visiting its official homepage: github.com
A breakdown of countries and app categories used by Card.Io apps.
Most popular Card.Io alternatives in 2024.
| SDK | Apps Integrated | Provider |
| 884K | Zxing Project Team | |
| 62K | Google LLC | |
| 29K | Google LLC | |
| 29K | Google LLC | |
| 20K | iText Group NV | |
| 2K | PDFTron Systems Inc. | |
| 996 | Google LLC | |
| 544 | Onespan Inc. | |
| 293 | Microblink Ltd. | |
| 278 | Zebra Technologies Corp. |
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