SureSpot

Sure spot is the most secure and encrypted messenger which uses end to end encryption to ensure a truly private messaging. it uses symmetric key encryption (256bit AES-GCM) using keys generated with 521 bit ECDH shared secret derivation
You can be confident and send private information and pictures, you will have control over your messages if you delete your message it will be deleted from the receiver's phone as well.
It is a open source app its source code is available on github.

Suggestions

1.Image editor

Image editor is a important feature for any chatting app it allows you to edit pictures before you send it,
Like it allows you to add filters to the photo or Draw something on photo and Add a caption while sending it
For Example

Benefits

Having to edit the picture you want to send to someone is a really great feature.
You can crop picture or edit it and even add a caption just like you see in the above picture
Editing picture would be really useful Which looks something like

As you can see from above picture the editing option lets you add tons of filters to you picture which you can select and send.
If you are sending a picture of you to someone you obviously want the picture to be good so this feature lets you add a few filters to the picture and make it better and then you can send it.
this feature is available in most of the chatting applications out there.
Its a really trendy and widely used feature being able to add filters before you send it to someone is really good.
Like there are tons of filters you can choose from as you can see in above picture it gives you preview of the filter applied on the photo before sending which is really helpful and with that feature you can decide which filter looks the best for your photo and you can apply it.

Adding filters is really good but also drawing on the photo could be really good to.
As you can see from the picture above you can even draw over the picture which could be really useful.
And there are tons of color options to choose the color and size of the drawing .
Which i find is really handy feature like if you send someone some picture you can highlight stuff in the picture and send.
Like when you send someone a funny picture or meme you can highlight what you found the most funny and send it so they can understand it better.
or else you can even write some note on the picture and send it if your sending it to your loved ones
this is a really handy feature and also very trendy.
Which makes sending pictures to other people even more fun and better people enjoy new things i think this could be really good feature adding filters and drawing over pictures or adding a caption these features are really useful for people i would really like to see this feature.

2.Notification Per Chat

This feature allows you to set Different notifications tones for every chat.
Which is very handy with this feature you can set different notification ringtone for every chat so when ever someone sends you a message there will be different notifications tones everytime.
For Example

Benefits

As you can see in above picture there is a User Profile and Notification sound option.
If you tap on that notification sound option there will open a popup with the notification sound option through which you can set any notification.
Which looks like this

As you can see in above picture after tapping on notification sound the list of your notification ringtones opens up and you can select the notification tone you want to set for that particular chat.
This is a very handy feature being able to set notification sounds per chat is really good.
With each notification sound you will know who sent you a message.
You can keep different tones for everyone so that you can identify who's text you got for family one tone for friends one tone for unknown contacts one tone this would be really helpful.
you wont have to open app every time to check who sent you a message.
With each message having different tone you can identify who is it from and decide weather you want to reply or not most of the time we open the app to see who sent us a message and even if we don't want to we end up replying them with this feature we can identify the person and decide weather we want to have a conversation or not which makes thing really easy and it is really fun to set ringtones per chat you can hear different ring tones everytime rather than same old notification tone which you keep default. i would really like to see this feature.

Conclusion

The features suggested above could prove to be very useful to users.
Like you can always edit pictures add filters or draw on the picture and add a caption to your picture before even sending it to anyone which is really great and which would be used a lot.
And with adding different notification tones for every chat is really handy through which you can identify who sent you message and would be nice to hear different notification sound for different chats rather than listening same notification sound for every chat.
I would really like to see these feature in future.
I will try to come up with more suggestions if i find any.

Thank you!