Comparison

iSum vs Offin

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iSum

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.

Highlights
  • 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
Features
Read full description

Embrace the simplicity of tracking numbers, expenses, time, and so much more with iSum, all from the convenience of your iPhone. Our latest update brings you an even more polished and user-friendly interface, making iSum not just a tool, but a delight to use. What's New? Experience our beautifully redesigned UI, crafted to near perfection for the most intuitive and seamless tracking experience on your phone. Why iSum? Simplified Design: An intuitive, user-friendly interface for effortless data management. Versatile Tracking: Effortlessly manage everything from daily expenses to health metrics. Smart Organization: Customize groups for your tracking needs with ease. In-Depth Insights: Access total sums, monthly averages, and trend overviews. Export with Ease: Conveniently export data as a CSV file, whenever needed. Track Balances: Now including negative numbers for comprehensive financial management. Secure & Accessible: Your data, safeguarded with top-notch security and accessible whenever you need it. Download iSum today and experience the pinnacle of easy and efficient data management on your iPhone! #iSum #TrackingSimplified Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Offin

This app helps you track expenses and manage your budget privately on your iPhone. It uses on-device AI to categorize transactions from imported bank statements or voice input, eliminating the need for bank logins or subscriptions.

Highlights
  • On-device AI transaction categorization
  • Import bank statements (PDF/CSV)
  • Apple Pay transaction logging
  • Voice input for transactions
  • Customizable categories and rules
  • Net worth, spending, and budget tracking
  • Offline functionality
Read full description

Offin is a private budget and expense tracker that runs 100% on your iPhone. Import your bank statements as PDF or CSV — on-device AI categorizes months of history in seconds. No bank login. No subscription. PAY ONCE. OWN IT FOREVER. No monthly fees, no annual renewals, no "premium" upsell. One purchase unlocks everything, for life. STOP TYPING TRANSACTIONS BY HAND Other trackers make you enter every coffee manually. Offin gives you four faster ways in: → Import bank statements — drop in PDF or CSV statements from your bank and watch months of history appear in seconds. → Tap with Apple Pay — purchases logged automatically via Shortcuts. No bank link, no credentials shared. → Just say it — voice input turns "twelve dollars at Chipotle" into a categorized transaction. → Type it — quick manual entry when you want it. AI THAT WORKS WITHOUT THE INTERNET Offin categorizes every transaction with an on-device machine learning model built for US spending — and uses Apple Intelligence on supported iPhones. Nothing ever leaves your phone. Don't agree with a category? Create your own categories and set custom rules, and Offin follows your system automatically from then on. SEE EXACTLY WHERE YOUR MONEY GOES → Net worth graph, daily spending, and monthly reviews on one home screen → Budgets with live progress → Upcoming bills and cash flow, so nothing surprises you → Insights with spending and savings charts, top merchants, and trends → Every account in one activity feed with powerful search and filters → Detailed per-account views PRIVATE BY ARCHITECTURE, NOT BY PROMISE Most finance apps ask you to hand over your bank credentials to a third-party aggregator. Offin never connects to your bank at all. Your data lives in one place — your phone — protected by Face ID. It works with no internet connection, because it never needs one. WHO IT'S FOR Anyone who wants a real budget and expense tracker without surrendering bank logins, paying rent on their own data, or becoming the product. Download Offin. Import a statement. Know your money in five minutes.

Screenshots

iSum4 screens
Offin4 screens

Verdict

The call

The clearest difference is rating: Offin at 5.0 against iSum's 4.1. Offin also leads on review sentiment (100% vs 83%). iSum's advantage is ratings volume (24 vs 1) and monetization model (free with in-app purchases vs paid). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. iSum sells 1 in-app purchase, starting at $2.99 per year and Offin sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Offin holds the better App Store score, 5.0 against 4.1. That said, the two scores are not equally well evidenced: iSum has 24 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 83% of iSum's written reviews are positive against 100% of Offin's.

UpkeepUpdate frequency

iSum ships an update fortnightly, Offin weekly. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.

Scorecard5 real differences · 5 level
iSum versus Offin: the parameters behind the verdict, then further details
ParameteriSumOffin
PriceFreeFree
Rating4.1 (24 ratings)5.0 (1 ratings) — better
Positive reviews82.7% of reviews100.0% of reviews — better
Number of ratings24 — better1
Update frequencyFortnightlyWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPodiPhone, iPad, Mac — better
Requires iOS15.0 — better17.0
Further details — not scored
Size1 MB38 MB
Age rating4+4+
DeveloperZEN PLUS LTDRADIX IT TECH INC

Customer experience

iSum

All ratings24 ratings
Positive79.2%
Neutral4.2%
Negative16.7%
Written reviews179 reviews
Positive82.7%
Neutral5.0%
Negative12.3%

Offin

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

iSum

Reported bugs

3 issues
  • Notes or descriptions disappearing after edits
  • Incompatibility issues with newer iOS versions
  • Incorrect date/time recording for entries

Requested features

5 requests
  • Add more category options
  • Implement iCloud or cloud sync support
  • Include a daily/weekly/monthly expense summary
  • Allow customization of currency and date formats
  • Provide a password protection or lock screen feature

Offin

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

iSum

Subscriptions1
  • iSum Annual Subscription$2.991 Year
1 purchases

Offin

One-time1
  • Lifetime Unlock$9.99

Questions

Is iSum free?
iSum is free to download, with in-app purchases available.
Is Offin free?
Offin is free to download, with in-app purchases available.
Which has better reviews, iSum or Offin?
Offin is rated higher. iSum averages 4.1 out of 5 from 24 ratings, while Offin averages 5.0 from 1 ratings.
Do iSum or Offin have ads?
Neither iSum nor Offin shows ads.
Which is updated more often, iSum or Offin?
iSum ships an update fortnightly, and Offin weekly. Most recently, iSum was updated on November 6, 2026 and Offin on October 31, 2026.

Other comparisons