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Personal Finance · head to head

Affirm vs Tiller Money

Affirm logo

Affirm

Personal Finance

Buy now pay later app offering short interest-free plans and longer plans that charge real APR interest

From
Free
Rated
-
Full reviewWebsite
Tiller Money logo

Tiller Money

Personal Finance

Spreadsheet-based personal finance

From
$79/year
Rated
-
Full reviewWebsite

The short version

  • Only Affirm has a free tier, so it costs nothing to try first.
  • Each has a real cost: Affirm longer instalment plans carry real interest, up to roughly 36 percent APR depending on the retailer, item and applicant, which is a genuine borrowing cost that the buy now pay later framing can obscure for shoppers who do not read the terms shown before accepting.; Tiller Money no native mobile app means mobile access limited to Google Sheets or Excel apps
  • They diverge on capability: Affirm covers Pay in 4, Tiller Money covers Auto-populates financial data.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Affirm and Tiller Money actually diverge.

Attributes where Affirm and Tiller Money differ
AttributeAffirmTiller Money
Starting priceFree$79/year
Pricing modelFree for short Pay in 4 plans; longer plans carry a disclosed APR up to roughly 36 percent, merchant pays a transaction feeUnknown
Free tierYesNo
PlatformsiOS, Android, WebWeb, Google Sheets, Microsoft Excel
FoundedUnknown2015

Identical on both: user rating (Not yet rated), category (Personal Finance).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Affirm

  • Pay in 4
  • Monthly instalment loans
  • Soft credit check
  • No late fees
  • Affirm Card
  • Pre-purchase terms disclosure

Only in Tiller Money

  • Auto-populates financial data
  • Customizable spreadsheets
  • Budget tracking
  • Financial templates
  • Bank accounts
  • Google Sheets
  • Excel
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Affirm

  • A shopper financing a large purchase such as furniture or electronics who wants disclosed APR terms compared directly against a credit card before committingnot Tiller Money
  • Someone using the short Pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interestnot Tiller Money
  • A borrower who has missed a payment before and specifically wants a lender that does not charge late feesnot Tiller Money
  • A retailer offering point-of-sale financing to reduce cart abandonment on higher-ticket items, in exchange for paying Affirm a transaction feenot Tiller Money

Tiller Money

  • Budget Managementnot Affirm
  • Expense Trackingnot Affirm
  • Investment Trackingnot Affirm

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Affirm

  • Longer instalment plans carry real interest, up to roughly 36 percent APR depending on the retailer, item and applicant, which is a genuine borrowing cost that the buy now pay later framing can obscure for shoppers who do not read the terms shown before accepting.
  • Even with no late fees, Affirm reports many loans to credit bureaus, so a missed or late payment on a longer plan can affect a credit score in a way the marketing around interest-free short plans does not prepare shoppers for.
  • Approval and APR both vary by individual loan, so the same shopper can be offered interest-free terms on one purchase and a high APR on another, making the cost unpredictable until checkout.
  • Merchants pay a transaction fee to offer Affirm at checkout, a cost typically built into retail pricing, so shoppers who pay by other means still indirectly subsidise the option even if they never use it.
  • The Affirm Card blurs the line between buy now pay later and a general-purpose credit card, and using it for everyday spending on interest-bearing terms can compound borrowing cost in a way a single point-of-sale purchase would not.

Tiller Money

  • No native mobile app means mobile access limited to Google Sheets or Excel apps
  • Spreadsheet-based interface can be intimidating for non-technical users unfamiliar with formulas
  • Requires manual customization and setup of templates and formulas for advanced features
  • No built-in investment performance tracking or analysis at the depth some competitors offer
  • Customer support is email and community-based, not real-time chat or phone support

Pricing, plan by plan

Affirm

Free
  • Pay in 4Free
    • No interest if paid on time over six weeks
    • No late fees for a missed payment
    • Soft credit check at application
  • Monthly instalmentsFree
    • APR disclosed before the loan is accepted, up to roughly 36 percent depending on retailer and applicant
    • Terms from three to 36 months depending on purchase amount
    • Payment history can be reported to credit bureaus

Tiller Money

$79/year
  • Annual Subscription$79/year
    • Unlimited transaction import
    • Up to 5 connected spreadsheets
    • AutoCat categorization

Which should you pick?

Choose Affirm if

  • You need pay in 4.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want monthly instalment loans.
Affirm review

Choose Tiller Money if

  • You need auto-populates financial data.
  • You work on Web, Google Sheets, Microsoft Excel.
  • You also want customizable spreadsheets.
Tiller Money review

Questions people ask

Is Affirm or Tiller Money better?
Neither clearly leads. Affirm starts at Free and Tiller Money at $79/year, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Affirm or Tiller Money?
Affirm has a free tier; the other does not. Paid plans start at Free for Affirm and $79/year for Tiller Money.
Does Affirm or Tiller Money run on more platforms?
Affirm runs on iOS, Android, Web. Tiller Money runs on Web, Google Sheets, Microsoft Excel.
Can I use Affirm for free?
Yes. Affirm has a free tier, so you can try it without paying. Tiller Money starts at $79/year.
What is Affirm best used for?
Affirm is most often used for a shopper financing a large purchase such as furniture or electronics who wants disclosed apr terms compared directly against a credit card before committing, someone using the short pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interest, a borrower who has missed a payment before and specifically wants a lender that does not charge late fees, a retailer offering point-of-sale financing to reduce cart abandonment on higher-ticket items, in exchange for paying affirm a transaction fee. Of those, a shopper financing a large purchase such as furniture or electronics who wants disclosed apr terms compared directly against a credit card before committing and someone using the short pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interest are not what Tiller Money is typically brought in for.
What can Affirm do that Tiller Money cannot?
Affirm covers Pay in 4, Monthly instalment loans, Soft credit check, No late fees. Tiller Money covers Auto-populates financial data, Customizable spreadsheets, Budget tracking, Financial templates.

Answered from the vendors’ own pages

Affirm: Does Affirm always charge interest?

No, short Pay in 4 plans over six weeks are typically interest-free if paid on time; longer instalment plans of three to 36 months can carry a disclosed APR up to roughly 36 percent.

Tiller Money: How much does Tiller Money cost?

Tiller Money costs $79 per year with no free tier. A 30-day free trial is available. The annual subscription includes 5 connected spreadsheets and unlimited categories.

Source
Affirm: Does Affirm charge late fees?

No, Affirm does not charge late fees for a missed payment, unlike some buy now pay later competitors, but missed payments can still be reported to credit bureaus.

Tiller Money: Does Tiller work with Google Sheets and Excel?

Yes. Tiller automatically feeds daily bank transactions and account balances to Google Sheets or Microsoft Excel spreadsheets you own. Your data remains yours permanently.

Source
Affirm: Will using Affirm affect my credit score?

The initial application uses a soft credit check that does not affect your score, but Affirm reports many resulting loans to credit bureaus, so payment history on the loan itself can affect your score.

Tiller Money: How many banks and financial institutions does Tiller connect to?

Tiller connects to 21,000+ US banks, credit card accounts, brokerages, and loan servicers via Yodlee and MX data providers. New banks are added weekly.

Source
Tiller Money: What is AutoCat in Tiller?

AutoCat is Tiller's 100% customizable automatic categorization feature that learns your spending patterns. You can set rules like 'file all grocery store transactions above $10 as groceries and below $10 as snacks.'

Source
Tiller Money: Does Tiller have a mobile app?

Tiller does not have a dedicated mobile app. Instead, it uses Google Sheets and Excel apps on mobile devices to access your spreadsheets. Mobile access is primarily for viewing, not transaction entry.

Source
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