Big Font - Change Font Size

Contains adsIn-app purchases
14.9K reviews
Content rating
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About this app

Do you feel hard to read text on your mobile or tablet because the text size is too small?
Will you spend your limited time to read text message or news on mobile phone for your grandparents just because they can’t read by themselves at normal font size? Even they put on their glasses?

Is there anything which can help you and your grandparents to zoom up the font? Can they happily read by themselves on their phone? This Big Font - Change Font Size & Text size is what you are looking for.

Using Big Font will help you:
✔ Increase system font size on mobile/tablets
✔ Read easier

★ Totally FREE
★ Preview the scaled text before applying
★ Allow increase font size from 50% to 300%

If you love Big Font, please leave review or send your feedback to
We are glad to hear from you and welcome you at anytime
Thank you for using Big Font!
Updated on
Nov 16, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

14.6K reviews
Ta Juro
April 27, 2021
Writing this on behalf of the owner of purchased visually impaired user. This is the best "no BS - one job" Big Font app that have worked perfectly in Android 10 but very unfortunately not with 11. With A11 the max size (in Samsung A40) is 224%. If you set it bigger than that, it will not give you the "changed succesfully" notification and simply do nothing. For visually impaired person this is not enough (need close to 300%) Sure hope that you can fix this quickly as this app is so vital when you cannot see small text. 5/5 with Android 10 1/5 with Android 11
71 people found this review helpful
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April 2, 2021
Its a great app! I've had it a couple of years now I need glasses to read,anyone who does should get this app especially the elderly,I put it on my dads phone he is in his mid 80s,granted when he texts me all I get is-*/#/@,"?!(that's not the app its dads big thumbling fingers!😃)he can read any text sent to him now.highly recommend this big font app.well done to the developers!.
62 people found this review helpful
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Keith N Searle
February 13, 2024
Good font app if you need some different fonts.
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What's new

Improve & fix bug for application