Comparison

Collap Expert vs Invoice Maker

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

Head to head
About

Collap Expert

Features
Read full description

Join thousands of successful service professionals. Get verified customers, manage bookings, track earnings, and receive fast payments. Perfect for plumbers, electricians, cleaners, beauticians, and all service providers.

About

Invoice Maker

Create professional PDF invoices, estimates, and receipts offline. Manage payments, track expenses, and generate reports with secure, on-device data storage and optional iCloud backup. Offers a free tier with limited PDFs per month and a Pro version for unlimited use.

Highlights
  • Create PDF invoices, estimates, and receipts
  • Offline functionality
  • Client signature capture
  • Payment tracking and reminders
  • Dashboard and reports
  • CSV export
  • Logo and signature addition
Features
Read full description

Invoice Maker: PDF & Estimate makes professional invoices, estimates and receipts on iPhone and iPad. There is no account and no sign-up, and it works fully offline, so you can bill a client from a job site, a basement or a plane. Everything stays on your device and in your own iCloud. We never see your clients, prices or revenue. HOW IT WORKS 1. Add your business name, logo and currency once. 2. Create an invoice, estimate or receipt: pick a client, then add items, tax and shipping. 3. Preview the PDF and send it by email, Messages or AirDrop. 4. Record payments as they arrive. Paid, partly paid and overdue show at a glance. NEW IN 1.1 - Credit notes: credit a whole invoice, chosen items or an amount. Balances and reports update by themselves. - Client statements: open items or account activity for any period, with aging, as a PDF. - PO numbers and shipping on invoices, with optional tax on shipping. - Widgets for the Home Screen and Lock Screen: money owed, overdue, paid this month or open estimates. - New invoice and New estimate buttons for Control Centre, the Lock Screen and the Action button. - Siri and Shortcuts: ask what you're owed, start an invoice or record a payment. - Spotlight finds invoices by client or number. FREE, NOT A TRIAL - Unlimited invoices, estimates, receipts and credit notes - Unlimited clients, payments and reports - 5 new PDFs a month; previews are always free, and resending an unchanged PDF never counts - 3 of the 9 PDF templates - Client signatures, payment links with a QR code, reminders and overdue alerts - Tax report, CSV export and iCloud backup - One business and one recurring invoice INVOICE MAKER PRO (monthly or yearly) - Unlimited PDFs - All 9 PDF templates - Client statements with balances and aging - Recurring invoices, sent on schedule - Unlimited businesses, each with its own logo, currency and numbering - Custom invoice number prefixes GREAT FOR Freelancers, contractors, consultants, plumbers, electricians, cleaners, designers, photographers, tutors and small businesses that need to send a quote today and get paid next week. WORKS WITH - PDF invoices, estimates, receipts, credit notes and statements - Any currency, with totals kept separate per currency - A tax rate per line, tax-inclusive or tax-exclusive prices, discounts and shipping - The app in 11 languages, chosen separately from your iPhone's language - iPhone and iPad QUESTIONS Do I need an account? No. There is no sign-up and no login. Open the app and make an invoice. Does it work offline? Yes. Everything works without a connection except iCloud backup and purchases. Is it free? Yes. The free version is a complete invoicing app with no time limit and no ads. Pro is an optional subscription. Can I turn an estimate into an invoice? Yes, in one tap. The estimate is kept and linked to the new invoice. Can I correct an invoice after sending it? Yes. Issue a credit note for the whole invoice, some items or an amount, and the client's balance updates. Can my client sign on my iPhone? Yes. The client signs on the screen and the signature prints on the PDF. Does it handle sales tax and VAT? Yes. Set a rate per line, choose tax-inclusive or tax-exclusive prices, and export a tax report grouped by rate. What happens if Pro ends? Nothing is lost. Every document, client and payment stays readable and exportable. Can I recover something I deleted? Yes. Deleted documents and clients stay in Recently Deleted for 30 days. Questions or problems? Write to support@amanghuman.com. We read every message. Terms of Use (EULA): https://amanghuman.com/eula?app=invoicemaker Privacy Policy: https://amanghuman.com/privacy?app=invoicemaker

Screenshots

Collap Expert4 screens
Invoice Maker4 screens

Verdict

The call

The clearest difference is in-app purchases: Collap Expert at none against Invoice Maker's 2. Collap Expert also leads on update cadence (weekly vs every 3 weeks) and iOS requirement (14.0 vs 17.0). On price, ads 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. Invoice Maker sells 2 in-app purchases, starting at $3.99 per month. Collap Expert asks for nothing beyond the download.

UpkeepUpdate frequency

Collap Expert ships an update weekly, Invoice Maker every 3 weeks. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 6 level
Collap Expert versus Invoice Maker: the parameters behind the verdict, then further details
ParameterCollap ExpertInvoice Maker
PriceFreeFree
Rating—5.0 (3 ratings) — better
Number of ratings—3 — better
Update frequencyWeekly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Freemium
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.0 — better17.0
Further details — not scored
Size70 MB7 MB
Age rating4+4+
DeveloperCollap Technologies LLPAmandeep Singh

In-app purchases

None

Collap Expert

No in-app purchases

2 purchases

Invoice Maker

Subscriptions2
  • Pro Monthly$3.991 Month
  • Pro Annual$34.991 Year

Questions

Is Collap Expert free?
Collap Expert is free to download, with no in-app purchases.
Is Invoice Maker free?
Invoice Maker is free to download, with in-app purchases available.
Do Collap Expert or Invoice Maker have ads?
Neither Collap Expert nor Invoice Maker shows ads.
Which is updated more often, Collap Expert or Invoice Maker?
Collap Expert ships an update weekly, and Invoice Maker every 3 weeks. Most recently, Collap Expert was updated on October 25, 2026 and Invoice Maker on October 31, 2026.

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