Yes. The app is free, in all 175 countries it sells in, and it sells nothing inside it.

Does iSum have a free trial?

No. None of its offers (US) come with a free trial.

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iSum

Name: iSum
Rating: 4.3 (136 reviews)
Author: ZEN PLUS LTD

ZEN PLUS LTD

Prices are current as of 19 Aug 2026.

iSum has no in-app products on record in the United States.

4.3 out of 5, based on 136 reviews.

Is iSum free?: Yes. The app is free, in all 175 countries it sells in, and it sells nothing inside it.
Does iSum have a free trial?: No. None of its offers (US) come with a free trial.

Last updated 2 years ago.

iSum sells in 175 countries. It was released 15 years and 4 months ago, on 11 May 2011. It holds a 4.3 rating from 136 reviews.

Supports 1 language: English.