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iSum

iSum

Track money, numbers and time

24 ratings
179 reviews
📊 Productivity
💰 Finance
Free
In-App Purchases

Price history

Details

Released
May 11, 2011
Updated
October 30, 2026

Features

Developer

ZEN PLUS LTD
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About

This finance app simplifies tracking expenses, time, and various metrics with a user-friendly interface. It offers customizable groups, in-depth insights, and easy data export. Manage finances, health, and more efficiently on your iPhone.

✓Simplified and intuitive interface
✓Versatile tracking for expenses, time, and metrics
✓Customizable groups for organization
✓In-depth insights and trend overviews
✓CSV data export
✓Support for negative numbers in tracking
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What users say about iSum

Reviews of iSum are mostly positive: the Finance app is rated 4.1/5 from 24 App Store ratings. What users like most: simple and easy to use, straightforward and efficient. Top complaints: occasional crashes or data loss issues, lack of password protection or security features. Summarized from real user reviews.

Positive things

  • 👍Simple and easy to use
  • 🚀Straightforward and efficient
  • 💡Useful for tracking expenses and budgeting
  • 🔒Secure and private data storage
  • ⭐Great customer service and responsiveness

Negative things

  • 🐛Occasional crashes or data loss issues
  • 🔒Lack of password protection or security features
  • 💰Subscription model or paid upgrade concerns
  • 📂Limited number of categories or lists
  • 🔄Difficulty restoring previous purchases
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+1

What's New in iSum

6.3.0

October 30, 2026

Search is here. Find any entry in an instant. Type a note, an amount or a time and iSum searches across all your lists, or just the one you're in. "Alex", "480" and "2:15" all work. A fresh look for iOS 26. iSum now uses Liquid Glass. Toolbars, buttons and the search bar float over your lists, so your numbers get more space and everything feels at home on the latest iOS. Also in this update: • A larger field for adding values, with more room for your note • Cleaner, consistent buttons and text fields throughout • Smoother navigation between lists • Keyboard layout fixes Thanks for using iSum! If you enjoy it, a quick rating really helps.

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Subscriptions & In-App Purchases

iSum Annual Subscription

Unlimited collections

$2.991 Year
How to cancel iSum subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Simple and easy

I have used this app for a while now. It’s simple and easy to use.
CYCleopatra Yeo

Previous Purchases Restored !

I give credit to the developer for listening to customer concerns regarding the removal of the ‘restore previous purchases’ option when the app went to a subscription format. I had used iSum for many years and it was a great app for tracking multiple accounts in an uncomplicated but functional manner. I stopped using it when the restore previous purchase was removed and I did not want to purchase a subscription format. I was impressed that the developer emailed me that the latest update restored the previous purchase option. I look forward to using iSum again!
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CCatS&H

Great service

The dev changed something and I didn’t like it. I wrote him and he fixed it! Cool dude!
W1woodbro 11teen

Simple and useful

I’ve been using this for years now, and it’s always been easy to use. I use it for keeping track of household expenses by the month, I like the fact it’s got few bells and whistles, just does a simple task well. I’ve now upgraded to premium, this is one of the most useful apps on my iPhone ! Thanks guys !
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JJeroenspeak

I don’t recommend it

I bought it some time ago ( one payment for life time to be used as many entries as I want ) , now you switch to subscription and you deprive me from adding new entries which I paid for, you can switch to subscription for new users and they will have the choice to buy it or not
MMO1st.
See 174 more reviews

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User experience

🐞

Reported Bugs

3 issues

Notes or descriptions disappearing after edits

Bug

Incompatibility issues with newer iOS versions

Bug

Incorrect date/time recording for entries

Bug
✨

Requested Features

5 requests

Add more category options

Feature

Implement iCloud or cloud sync support

Feature

Include a daily/weekly/monthly expense summary

Feature

Allow customization of currency and date formats

Feature

Provide a password protection or lock screen feature

Feature

FAQ

What is iSum?

iSum is a finance and data tracking application for iPhone that allows users to monitor expenses, time, and other metrics with a simplified interface. It offers features like customizable groups, data export, and trend overviews.

Is iSum free to use?

Yes, iSum is free to download and use. It offers an optional annual subscription for additional features or benefits.

What are the subscription options for iSum?

iSum offers an 'iSum Annual Subscription' priced at $2.99 per year. This subscription may unlock additional features or remove limitations present in the free version.

What devices does iSum support?

iSum is designed for Apple devices and is supported on iPhone and iPod. It is not currently available for Android or other platforms.

How secure is my data in iSum?

The app description states that your data is safeguarded with top-notch security and accessible whenever you need it. Users have noted secure and private data storage as a positive aspect.

Does iSum have ads?

No, iSum does not contain advertisements. The app is free to download and use, with optional in-app purchases for its subscription.

How often is iSum updated?

The latest version, 6.3.0, was last updated on October 30, 2026. While this indicates a recent update, the frequency of future updates is not specified.

What are the main pros and cons of iSum according to users?

Users praise iSum for being simple, straightforward, and efficient for tracking expenses and budgeting, as well as for its secure data storage and customer service. However, some users have reported occasional crashes or data loss, and concerns about the subscription model or limited categories.