Ten Best Open-Source Apps for Android and iPhone

Software development is a booming industry with multiple beginners trying their hand at creating amazing applications. Out of all the possible solutions available in the market, open-source apps can be a great help for beginners in application development. Do you know that around 70,000 new Android and 32,000 new iOS applications are launched every month? Open-source apps eliminate the problems of large investment and time in application development.

So, today we bring a detailed list of the ten open-source applications for Android and iOS. We’ve completed this well-researched list based on the different compatibility, version requirements, app size, features, advantages, and possible disadvantages. Below is a detailed list of the ten top and best open-source applications for Android and iOS.

Top Best Open-Source Apps for Android and iPhone:

Beginners in application development may feel confused about selecting the ideal open-source application. It is easy to have a quick list of the top choices in the same and then select one based on immediate needs. It is recommended to select one based on the secure, genuine, and flexible features of open-source apps. So, here you go:

1. VLC for Mobile

 VLC for Mobile

Alt text: vlc for mobile interface

Ranking first in our list of the top best open-source apps for Android and iPhone is VLC for mobile. It is a popular open-source app with an easy interface and cutting-edge features. It helps play local videos and offers adaptive streaming to stream online videos. VLC for mobile offers support for different video formats, subtitles, Teletext, multi-track audio, etc.

Compatibility: Android and iPhone

Version requirements: Android 2.2 or higher, iOS 9.0 or later

Size: 32 MB

Price: Free

Features of VLC for Mobile:

  • It offers video rendering through Chromecast.
  • It offers playback speed control.
  • It helps play local audio and video files.


  • It supports different subtitles and multi-track audio.
  • It supports different formats like AAC, Wv, FLAC, M2TS, TS, Ogg, MOV, MKV, AVI, MP4, etc.
  • It eliminates the need for separate downloads and popular codecs.


  • It lacks advanced last playback features.

2. Bitwarden Password Manager

Bitwarden Password Manager

If asked for a leading open-source app offering the best benefits for keeping passwords secure and safe, Bitwarden Password Manager is the perfect solution. It helps create, store, secure, share, and manage unlimited passwords from different devices. Bitwarden Password Manager is built on the basics of the cross-platform application and has a built-in password generator, world-class encryption, etc.

Compatibility: Android and iPhone

Version requirements: Android 5.0 or higher, iOS 10.0 or later

Size: 23 MB

Price: Free

Features of Bitwarden Password Manager:

  • It has a Secure Vault feature.
  • It offers translations in more than 40 languages.
  • It has a built-in password generator.


  • It offers end-to-end encryption.
  • It offers PBKDF2 SHA-256, AES-256 bit, salted hashtag, etc.
  • It helps create strong, unique, and random passwords easily.


  • It lacks an autofill password feature.

3. Firefox


Next in line is an open-source application from the non-profit Mozilla Foundation. It works to offer different public resources to a global audience. It helps protect users’ privacy during web browsing. Firefox bans different trackers like cross-site cookie trackers and social media trackers. Not only this, its Enhanced Tracking Protection prevents the tracking of content from getting displayed on all Windows.

Compatibility: Android and iPhone

Version requirements: Android 5.0 or higher, iOS 13.0 or later

Size: 75 MB

Price: Free

Features of Firefox:

  • It offers private browsing mode.
  • It has Enhanced Tracking Protection.
  • It has a streamlined home screen for seamless use.


  • It allows secure internet browsing.
  • It is the perfect solution for preventing content tracking.
  • It removes data gathering by different website trackers.


  • Tabs can be moved from left to right only.

4. SimpleLogin


SimpleLogin offers an innovative method of logging in to different websites. It works perfectly for situations when users don’t want to end up their inboxes with spam. SimpleLogin assigns new email addresses while signing up for a new online service and hence help disguise the real email id of the user. Hence, users are protected from getting their email addresses into the hands of spammers.

Compatibility: Android and iPhone

Version requirements: Android 5.0 or higher, iOS 15.0 or later

Size: 5.3 MB

Price: Free

Features of SimpleLogin:

  • It supports in-app alias management.
  • It is independently audited for security.
  • It offers strict PGP encryption.


  • It offers the best protection against email spammers.
  • It helps users manage different mailboxes.
  • It ensures the security of email addresses.


  • It lacks the option to change the default address while using the app.

5. DuckDuckGo Privacy Browser

 DuckDuckGo Privacy Browser

Ranking fifth position in our list is DuckDuckGo Privacy Browser. It prioritizes security and privacy for the application developers while offering the best features. It helps delete all the browsing history with a single click. Not to miss is that it effectively blocks all third-party trackers from hiding and storing the app data. DuckDuckGo Privacy Browser helps websites to use encrypted HTTPS versions to improve security standards.

Compatibility: Android and iPhone

Version requirements: Android 6.0 or higher, iOS 14.0 or later

Size: 24MB

Price: Free

Features of DuckDuckGo Privacy Browser:

  • It has a built-in private search to surf easily.
  • It has built-in email protection.
  • It has fingerprint protection eliminating the search engine from fingerprinting the user.


  • It gives utmost importance to security standards.
  • It ensures that websites use encrypted HTTPS versions.
  • It eliminates the hidden trackers.


  • It doesn’t work well occasionally.

6. OsmAnd Maps

OsmAnd Maps

Users looking for detailed offline maps of different places globally go for OsmAnd Maps. It is the exclusive open-source application preventing data phishing. It covers all the necessary elements like day/night modes, public transit routes, GPS navigation, sharing, sites of interest, etc. In addition to it, OsmAnd Maps makes it easy for users to store maps on their Android or iOS devices.

Compatibility: Android and iPhone

Version requirements: Android 6.0 or higher, iOS 12.0 or later

Size: 102 MB

Price: Free

Features of OsmAnd Maps:

  • It offers point-by-point route plotting using different navigation profiles.
  • It works effortlessly offline.
  • It offers different map styles for different activities like off-road, nautical maps, desert, touring views, etc.


  • It is the perfect solution for viewing maps in low internet connectivity areas.
  • It quickly displays favorite places on the map like major attractions, health places, food, etc.
  • It ensures that users get precise map access.


  • It lacks the option to display N, NE, E, etc.

7. ProtonMail


Next on our list of the useful and best open-source apps for Android and iPhone is ProtonMail. It offers maximum security for the mail to the users. It protects the users from tracking, spamming, phishing attacks, etc. Not only this, ProtonMail is a strong competitor to the leading mailbox applications with its ease of creating, reading, and organizing multiple emails.

Compatibility: Android and iPhone

Version requirements: Android 6.0 or higher, iOS 11.0 or later

Size: 21.45 MB

Price: Free

Features of ProtonMail:

  • It uses PGP protocols for mailbox security.
  • It prevents tracking, spam, phishing, etc.
  • It prevents spying for targeted ads.


  • It ensures easy email management for users.
  • It keeps the mailbox secure using its high-end encryption.
  • It never spies on the communication for targeted ads.


  • It causes issues in sending emails.

8. Brave Private Web Browser

 Brave Private Web Browser

If you’re looking for a safe web browser, Brave Private Web Browser is the perfect solution for your needs. It is reportedly three times faster than Chrome. It offers offline playing of the media files. It offers advanced features like Brave search, Brave playlist, etc., for improving the web browsing experience of the users. Brave Private Web Browser is the ultimate fast and secure browser offering data optimization.

Compatibility: Android and iPhone

Version requirements: Android 4.4 or higher, iOS 12.0 or later

Size: 93.16 MB

Price: Free

Features of Brave Private Web Browser:

  • It offers Firewall and VPN services.
  • It helps in web searches without being tracked.
  • It allows easy viewing and reading in low light.


  • It protects the device from ads infected with malware.
  • It protects the system with private incognito tabs, cookie blocking, script blocking, etc.
  • It can be quickly set as the default web browser.


  • It lacks easy and selective history deletion features for specific sites.

9. Collabora Office

Collabora Office

If asked for a leading open-source office suite, Collabora Office is the perfect solution. It is a popular presentation program, spreadsheet, and text editor for Android and iOS devices. It is based on LibreOffice and supports different file formats like Microsoft Office, Open Document Format, etc. When combined with the new front-end based on Collabora Online, it offers quick reading and saving of documents.

Compatibility: Android and iPhone

Version requirements: Android 5.0 or higher, iOS 12.2 or later

Size: 108MB

Price: Free

Features of Collabora Office:

  • It offers SLA, long-term support, maintenance, and detailed updates.
  • It supports .odt, .odp, .ods, .ots, .ott, .otp, etc.
  • It supports Microsoft Office 97/ 2000/ XP/ 2003/ 2007/ 2010/ 2013/ 2016/ 2019, etc.


  • It is the leading private office suite service in the cloud.
  • It eliminates the need for any external storage.
  • It allows excellent interoperability.


  • It fails to save changes to the documents.

10. Nextcloud


Last but not least is the dedicated open-source app for data storage. It helps with reading, renaming, copying, moving, and deleting different files with a quick sharing option. It can quickly display an image or video previews and helps tag different file formats. Not to miss are the passcode feature, multi-account support, etc., by Nextcloud.

Compatibility: Android and iPhone

Version requirements: Android 6.0 or higher, iOS 14.0 or later

Size: 24.45MB

Price: Free

Features of Nextcloud:

  • It has a modern and easy-to-use interface.
  • It ensures quick file uploading to the Nextcloud server.
  • It helps quick file sharing with others.


  • It ensures memory optimization for Android and iPhone.
  • It makes it easy for the users to monitor the cloud from the menu in the tab bar only.
  • It allows the automatic loading of photos from the camera.


  • It slows down when used for photos.

Wrapping Up:

Hence, it is easy for the readers to understand the different open-source apps for Android and iOS in the list. The details of these applications, like compatibility version requirements, app size, features, advantages, and possible disadvantages, are well-researched for quick help to our readers. It is easy to select any of these open-source apps for Android and iOS devices based on your immediate application development needs. The best part about some of these apps is their exclusive focus on security, data sharing, etc.

So, what are you waiting for? Start your application development journey with a quick reference of the best open-source apps for Android and iPhone.

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