A Bitcoin mempool monitoring and notification app for Android.
About this app
Mempal is a Bitcoin network monitoring app that allows users to effortlessly track key metrics. It's the essential tool for users who want to optimize their Bitcoin usage and save on fees.
Key Features
Detailed Mempool Insights: Mempal provides in-depth information about the current state of the Bitcoin network, including current block height, hashrate, mempool size, fee rates, and fee distribution. This allows users to gauge network congestion and make informed decisions regarding transaction fees.
Real-Time Notifications: Tailored notification settings to receive alerts when transaction fees decrease, when a specific TXID is confirmed, or when new blocks are mined.
Fee Estimator: Calculate transaction fees by selecting address type, number of inputs and outputs, optional multisig configuration, and fee rate preference.
Custom Servers: Connect Mempal to a self-hosted mempool server so you don't have to trust third parties to obtain information about the Bitcoin network.
Tor Integration: Built-in Tor integration to preserve your privacy when tracking TXIDs.
Widgets: Receive quick and up-to-date information about key network metrics.
Licensed under MIT, by æon.
What's New in v2.0
Imported from the F-Droid repository index.
- - Fully implemented sub-sat and decicmal fee rates.
- - Added fee estimator tool for estimating fee costs.
- - Added average blocktime information to dashboard.
- - Added mempool transaction count to dashboard.
- - Added option to reorder dashboard categories.
- - Performance optimizations and code improvements.
Version history
Jan 6, 2026 · 27.4 MB · Android API 24–35 · code 20
Imported from the F-Droid repository index.
- - Fully implemented sub-sat and decicmal fee rates.
- - Added fee estimator tool for estimating fee costs.
- - Added average blocktime information to dashboard.
- - Added mempool transaction count to dashboard.
- - Added option to reorder dashboard categories.
- - Performance optimizations and code improvements.
SHA-256 d1b6354764c504db986381c9e9c7652718c12dc06b7ac49bf646f3a13c2b0327
May 21, 2025 · 28.2 MB · Android API 24–35 · code 15
Imported from the F-Droid repository index.
- - Added swipe-down feature to refresh dashboard.
- - Added custom time option for widget auto-update frequency.
- - Fixed widget refresh bug when Android battery/data saver mode is enabled.
- - Various optimization and bug fixes.
SHA-256 8e05bcaa092629af4f9d9029a19eb7789c2268c2ca476d7bf04d755ac23c97ec
Feb 16, 2025 · 28.2 MB · Android API 24–35 · code 14
Imported from the F-Droid repository index.
- - Added welcome screen with quick tips.
- - Added hashrate, difficulty, and adjustments to dashboard.
- - Modified widget auto-refresh intervals.
- - Fixed versioning mismatch.
SHA-256 8e68658f7b21fa6e58be3f4daa22343fe0d1246b32b268d9f480a6d4f344401e
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- Aligned with the latest Android target SDK expectations.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
Launch the app from your home screen
Make sure to re-enable Unknown Sources restrictions after installation for security.
How to install this safely
How to verify the file you downloaded
Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.
What the signing certificate proves
Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be com.example.mempal is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.
How to roll back to an earlier version
If the current release misbehaves, 1.5.3 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Mempal first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.
Why we list sources instead of hosting everything
The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Mempal, and a listing is removed when the evidence for it stops holding up.
Get Mempal
Every source we list for com.example.mempal is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe upstream repository this build is compiled from.
We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.
App Information
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
d1b6354764c504db986381c9e9c7652718c12dc06b7ac49bf646f3a13c2b0327
Signing certificate
c1a48b5a792369aacfb1655fb39449718109d67dfbbd507bc31d4e3e07a04e39
Permissions Required
Previous Versions
The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.
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