Certain Check-In

Check attendees into your events on Certain with Certain Check-In.

Certain Inc. · com.app.cci

Not rated yet 5K+ downloads v6.2 8.6 MB Android 5.0+ PEGI 3 · Everyone

Download APK 8.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v6.2 (51)
Updated: Jul 2, 2026 (3 months ago)
APK size: 8.6 MB
Requires: Android 5.0+ (API 21)
CPU support: Any (no native code)
Category: Business (app)
Listed since: Apr 17, 2021 (at least)
Permissions: 16 (5 sensitive)
Website: certain.com
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Certain Check-In is an app by Certain Inc. in the Business category, listed since at least April 2021. It has no native code, so it runs on any Android processor.

It asks for 16 permissions, 5 of them sensitive, including precise location, camera and approximate location. The app can read the advertising ID that ad and analytics services use.

What's new in v6.2

Bug Fixes App has been tested with latest Android 12 release.

Description

From the listing uploaded by “appupdater”.

Certain Check-In is a simple, lightweight app to check attendees in to your events running on the Certain Platform. With our all-new application, you can: - Check in attendees for events configured in Certain. - Edit profile fields for attendees. - Instantly sync information back to Certain. - Add walk-in registrations on the go. - Scan QR codes created in Certain Badges. If the app has made your life easier, please consider leaving a review of our app.

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jul 2, 2026.
Certificate issued to “Certain Inc.” This is the certificate of the Google Play version.

Store checks and file details

Developer signature verified Jul 2, 2026
Validated against Google Play Jul 2, 2026
Signed byCN=Certain Inc., OU=Certain Check-In, O=Certain Inc., L=San Francisco, ST=California, C=US
Signing certificate (SHA-1)D4:A5:05:12:32:EC:32:11:11:55:D7:9F:BE:5D:38:29:4B:5B:F4:B3
File MD555f4fc2b335102984e203cecaa20414a
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (16)

Certain Check-In requests 16 permissions, 5 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Camera Sensitive android.permission.CAMERA
Modify shared storage Sensitive android.permission.WRITE_EXTERNAL_STORAGE
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Read shared storage Sensitive android.permission.READ_EXTERNAL_STORAGE
Advertising ID com.google.android.gms.permission.AD_ID
Change network state android.permission.CHANGE_NETWORK_STATE
Change wifi state android.permission.CHANGE_WIFI_STATE
Control vibration android.permission.VIBRATE
Full network access android.permission.INTERNET
Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
Nfc android.permission.NFC
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
View Wi-Fi connections android.permission.ACCESS_WIFI_STATE
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Location android.hardware.location
Portrait screen android.hardware.screen.portrait

Certain Check-In APK: questions and answers

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Certain Check-In APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. After downloading, check that the file's MD5 is 55f4fc2b335102984e203cecaa20414a.