FastField Forms
v3.9.1 · 65.9 MB · code 201
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File information
UpdatedJan 20, 2026
PublishedMar 3, 2021
Packagecom.mergemobile.fastfield
Versionv3.9.1 (201)
Size65.9 MB
MD5d24a926fb1992ee64889fe2e3a94fd0c
Min SDK23
ABIsx86, x86-64, armeabi-v7a, arm64-v8a
Malware scanTRUSTED
Signature SHA197:F6:BA:22:E3:96:54:59:93:AB:F1:A1:7D:17:03:C6:DD:5A:7C:B6
SignerCN=Merge Mobile, OU=Mobile Development
Total downloads100,000
This version100,000
DeveloperMerge Mobile, Inc.
Age ratingEveryone
What's new in v3.9.1
• New: Task Scheduler feature handling
• New: Task instance lists - Sort by location now sorting by distances from current location
• Fix: Quotes in subform field name breaking sumSubform() calculation from main form
• New: Task instance lists - Sort by location now sorting by distances from current location
• Fix: Quotes in subform field name breaking sumSubform() calculation from main form
Security scan
TRUSTED
- Developer signature verified 2026-01-20
- Signature SHA1 97:F6:BA:22:E3:96:54:59:93:AB:F1:A1:7D:17:03:C6:DD:5A:7C:B6
- File MD5 d24a926fb1992ee64889fe2e3a94fd0c
How to install FastField Forms v3.9.1 on Android 6.0 Marshmallow+
Takes about 2 minutes. You'll need roughly 65.9 MB of free storage.
- Grab com.mergemobile.fastfield_201.apk — hit the Download button above (65.9 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 d24a926fb1992ee6…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.mergemobile.fastfield_201.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=Merge Mobile, OU=Mobile Development. 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 FastField Forms — tap Open on the install screen, or find the FastField Forms icon in your app drawer (this build targets x86/x86-64/armeabi-v7a/arm64-v8a devices).
Common install errors for FastField Forms
- "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 6.0 Marshmallow 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.