Growth · alternatives · 2026

24 alternatives to Shield One

Offline spam call blocker for Android. No tracking, no ads.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1
Call Control▲60
Crowdsourced phone spam blocking and reporting (Android)
2014 · play.google.com · its alternatives →
2
Inbox Shield by Leave Me Alone▲436
An email screener that works with any email account
2022 · its alternatives →
3
Contacts Only▲66
Block all calls not in contacts 🤚
2019 · play.google.com · its alternatives →
4
SMS Shield▲112
Machine Learning-based SMS spam filter for iOS 11
2017 · apps.apple.com · its alternatives →
5
Shieldy▲126
A zero-config Telegram bot that fights spam in chats
2018 · t.me · its alternatives →
6
RoboStopper▲70
Block spam calls or get paid for them wasting your time
2019 · robostopper.app · its alternatives →
7
RoboCash▲72
Get paid to block spam calls
2020 · its alternatives →
8
MyHumans: Spam Call Blocker▲69
Stop 100% of spam calls
2019 · its alternatives →
9
Dasha Assistant▲154
Stop every spam call, no matter who is calling
2020 · dasha.ai · its alternatives →
10
Hiya▲86
Know who's calling or texting and block spammers on Android
2016 · hiya.com · its alternatives →
11CS
CallStop – Superhuman for your phone number▲91
Robocalls and unwanted calls are one of the biggest hassles these days. Over 50% of phone traffic is spam. I'm the founder of CallStop: https://apps.apple.com/us/app/callstop/id1455892856 CallStop allows you to: - Block 100% of robocalls on your current number, using your contacts as a whitelist - Effortlessly email call invites to an any email (that can be joined in one tap, the PIN is embedded), where the recipient can only call you starting 5 minutes before the meeting start and up until 5 minutes after the meeting end - Pause call filtering and have it…
2020 · its alternatives →
12
Pepper▲114
Block robocalls before they ring your phone ❌🤖
2019 · callpepper.co · its alternatives →
13
Callblock▲204
The first app to block telemarketers automatically in iOS
2017 · callblockapp.com · its alternatives →
14
RoboKiller▲85
The app that stops spam calls forever
2019 · robokiller.com · its alternatives →
15
Block Guard: Spam Call Blocker
Block unwanted calls and filter suspicious texts on Android
May 2026 · play.google.com · its alternatives →
16
Castle▲115
Free your phone from spam calls 🤖
2018 · apps.apple.com · its alternatives →
17
Owly▲108
An AI powered iOS mobile app that blocks spam messages
2024 · apps.apple.com · its alternatives →
18
Bouncer Shield▲85
Real-time form protection against bad emails
2024 · usebouncer.com · its alternatives →
19
AdGuard 3.0 for Android▲75
The most powerful Android ad blocker
2019 · adguard.com · its alternatives →
20
Scam Shield▲7
from T-Mobile
2020 · t-mobile.com · its alternatives →
21
SudoApp▲127
The 100% private, unlimited messaging and calling app.
2016 · anonyome.com · its alternatives →
22
Groot▲8
Open-source spam call blocking for iOS
Feb 2026 · github.com · its alternatives →
23
Block This!▲78
Stop advertisements, spam and malware on Android
2015 · play.google.com · its alternatives →
24
Firewall – Extreme Robocall Blocker▲16
Download Firewall - Spam Call Blocker by Ad Hoc Labs, Inc on the App Store. See screenshots, ratings and reviews, user tips, and more apps like Firewall - Spam…
2019 · apps.apple.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →