Adventure Lab®
v1.57.0 · 78.1 MB · code 4956
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File information
UpdatedJan 19, 2026
PublishedApr 7, 2021
Packagecom.groundspeak.react.adventures
Versionv1.57.0 (4956)
Size78.1 MB
MD58f270e7e58c73e197305361f97f9ea8d
Min SDK26
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA173:5C:66:A6:77:99:3A:04:80:88:1F:3A:E8:A4:58:0C:5E:D1:BE:97
SignerCN=Stuart Schwartz, OU=Engineering, O=Geocaching, L=Seattle, ST=WA, C=US
Total downloads500,000
This version500,000
DeveloperGroundspeak Inc.
Age ratingEveryone
What's new in v1.57.0
Ongoing maintenance. The latest app update includes small visual changes and bug fixes for a more consistent experience.
Security scan
TRUSTED
- Developer signature verified 2026-01-19
- Signature SHA1 73:5C:66:A6:77:99:3A:04:80:88:1F:3A:E8:A4:58:0C:5E:D1:BE:97
- File MD5 8f270e7e58c73e197305361f97f9ea8d
How to install Adventure Lab® v1.57.0 on Android 8.0 Oreo+
Takes about 2 minutes. You'll need roughly 78.1 MB of free storage.
- Grab com.groundspeak.react.adventures_4956.apk — hit the Download button above (78.1 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 8f270e7e58c73e19…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.groundspeak.react.adventures_4956.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Stuart Schwartz, OU=Engineering, O=Geocaching, L=Seattle, ST=WA, C=US. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Adventure Lab® — tap Open on the install screen, or find the Adventure Lab® icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for Adventure Lab®
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android 8.0 Oreo or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.
- Works on one phone but not another — this build ships x86/x86-64/armeabi-v7a/arm64-v8a native code. Devices with a different CPU will reject it.