Comparison

Sumly vs SlimBooks

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

Head to head
About

Sumly

Manage business and personal finances, file taxes with confidence, and track expenses automatically. This app helps self-employed individuals identify tax savings and avoid missing deductions. Get real-time insights into your tax bill and receive expert support.

Highlights
  • Automated expense tracking
  • Real-time tax savings calculation
  • Quarterly estimate reminders
  • Deduction opportunity flagging
  • Tax filing for self-employed
  • Priority tax expert support
Features
Read full description

Sumly is the financial home for the self-employed. Whether you're a freelancer, independent consultant, contractor, or single-member LLC, Sumly gives you one place to manage business and personal finances, file your taxes, and stop leaving money on the table. The average self-employed professional overpays $2,350 in taxes every year. Sumly changes that. What you can do with Sumly File your taxes with confidence: A streamlined filing experience built for self-employed income, deductions, and the complexity that comes with working for yourself. Automatic expense tracking: Your expenses are captured and categorized automatically. No spreadsheets, no manual uploads, no end-of-year scramble. Real-time tax savings: Watch your tax bill decrease as deductions are applied. You always know where you stand. Quarterly estimate reminders: Never miss an IRS deadline. Smart nudges keep you on schedule all year. Top deduction opportunities: Sumly flags high-impact deductions you might be missing so nothing gets left behind. Priority support from a tax expert: When you have questions, a real tax expert is available to help fast. Stay organized year-round and walk into filing season with clarity and confidence. Privacy Policy: https://www.getsumly.com/legal-pages/privacy-policy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

SlimBooks

Read full description

When you were an employee, tax time meant a W-2 showed up. Nobody hands a business owner that form. SlimBooks is how self-employed service providers — consultants, freelancers, creators, developers, and single-member LLCs — make one: a tax-ready Schedule C (Form 1040) summary built from your business spending, without learning bookkeeping. HOW IT WORKS - Connect your bank securely through Plaid, or import a CSV - On mixed accounts, swipe to separate personal from business — left for personal, right for business - Categorize expenses into real Schedule C categories. SlimBooks suggests as it learns your vendors - Generate a clean report of income and expenses, ready for your accountant or your tax software WHY IT'S DIFFERENT - Purpose-built for Schedule C filers, not scaled-down business software - No accounting vocabulary required - Your bank credentials are never stored — connections run through Plaid, the same infrastructure other major financial apps use WHAT IT'S NOT SlimBooks doesn't file your return and doesn't give tax advice. It's made for people who sell services. If you also keep products in stock, turn on inventory and SlimBooks works out your cost of goods sold for the report. SlimBooks does the sorting, so your accountant bills you for expertise instead of data entry. PLANS - Manual — free. Import CSVs, categorize, and generate reports. - Autopilot — automatic sync for up to two banks, with suggested categories. $9.99 a month through the App Store, with the first month free for new subscribers. It renews monthly until you cancel, and you can cancel any time in your Apple ID subscriptions. Questions? gustavo@getslimbooks.com Privacy: https://www.getslimbooks.com/privacy Terms: https://www.getslimbooks.com/terms

Screenshots

Sumly4 screens
SlimBooks4 screens

Verdict

The call

The clearest difference is update cadence: Sumly at weekly against SlimBooks's every 4 months. On price, ads, in-app purchases and device support 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. Sumly sells 2 in-app purchases, starting at $39.99 per month and SlimBooks sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sumly ships an update weekly, SlimBooks every 4 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

Scorecard1 real difference · 9 level
Sumly versus SlimBooks: the parameters behind the verdict, then further details
ParameterSumlySlimBooks
PriceFreeFree
Rating5.0 (5 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings5 — better—
Update frequencyWeekly — betterEvery 4 months
AdsNoNo
In-app purchasesYesYes
MonetizationFreemium—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.6 — better16.4
Further details — not scored
Size44 MB65 MB
Age rating4+4+
DeveloperSumlyIndie CFO LLC

In-app purchases

2 purchases

Sumly

Subscriptions2
  • Pro Subscription7 Days trial2 variants$39.991 Month
  • Pro Subscription7 Days trial$49.991 Month
1 purchases

SlimBooks

Subscriptions1
  • Autopilot1 Month trial$9.991 Month

Questions

Is Sumly free?
Sumly is free to download, with in-app purchases available.
Is SlimBooks free?
SlimBooks is free to download, with in-app purchases available.
Do Sumly or SlimBooks have ads?
Neither Sumly nor SlimBooks shows ads.
Which is updated more often, Sumly or SlimBooks?
Sumly ships an update weekly, and SlimBooks every 4 months. Most recently, Sumly was updated on November 4, 2026 and SlimBooks on October 31, 2026.

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