Comparison

Invoice Maker by RapidBooks vs Invoice Maker Flex

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

Head to head
About

Invoice Maker by RapidBooks

Create and send professional invoices and estimates on the go. This app helps small business owners, contractors, and freelancers get paid faster with features like online payment acceptance, reminders, and detailed reports. Stay organized and manage your business finances efficiently.

Highlights
  • Create professional invoices and estimates
  • Customize with business logo
  • Generate PDF invoices
  • Save frequently used items and clients
  • Accept online and offline payments
  • Send payment reminders
  • Track outstanding invoices with reports
Features
Read full description

Invoice Maker developed by RapidBooks is an easy to use invoice app for sending professional invoices and estimates to your customers on the go. Create and send invoices immediately when you finish the job, before you even leave the customer! Accept your customer's favorite online payment methods. Track the status of all your invoices and send proper reminders to get paid faster. See business performance at a glance with powerful reports. With our Invoice Maker, small business owners, contractors and freelancers can invoice customers in no time and send professional PDF invoices with ease. It's the perfect invoice app to help you stay organized and run business on the go. RapidBooks - Invoice Maker Features * Create professional invoices and estimates with polished templates * Generate invoices from estimates with just one tap * Customize invoices and estimates with your business logo * Create PDF invoices and estimates with built-in PDF maker * Save frequently used items, clients and settings for reusing * Include payment terms: Net 7, Net 30 etc * Discount on item or total * Tax on item or total, inclusive or exclusive * Automatic tax and discount calculation * Add your signature and customer's signature * Attach images to invoices and estimates * Accept online payment by credit card and PayPal * Accept cash, check and bank transfer * Request advanced payments or deposit * Send reminders before or after due date * Add early payment discount and late fee to encourage fast payment * Allow your customers to pay a tip * Get notified when your invoices and estimates have been read * Preview invoices and estimates before sending * Send invoices and estimates with email or other social apps etc * Send professional payment receipts * Built in email templates for invoices and estimates * Track your outstanding invoices with rich reports * Automatically sync across multiple devices 5 Reasons to Love RapidBooks Invoice Maker 1. BE PROFESSIONAL Choose from the professional invoice templates optimized for easy use and customize it with your own logo. 2. INVOICE WITH EASE Create and send an invoice in under one minute without any training. Make billing your customers the simplest thing you do all day. 3. CREATE & SEND ESTIMATES Create and send an estimate for your project. Convert an estimate into an invoice in seconds. 4. GET PAID FASTER Send invoices on the spot. Make it easy to get paid. Accept credit cards in-person or online, as well as checks and cash. 5.STAY ORGANIZED Know what happens to your invoice after sent. Manage all your business finances in one place. Ready to start making invoices and estimates with ease? Download our RapidBooks Invoice Maker app today. You can create and send unlimited invoices and estimates freely forever. You can upgrade to premium account by monthly or annually subscription to enjoy more privileges: 1) Free to use online payment to accept your customer's payment 2) Unlimited cloud storage for invoices and estimates across devices sync for one account Payment will be charged to your iTunes Account at the confirmation of purchase.Subscription automatically renews unless it is canceled at least 24 hours before the current period ends.Your account will be charged for renewal within 24 hours prior to the end of the current period.You can manage and turn off your subscriptions in your iTunes Account settings after purchase. Terms of use: https://www.rapidbooksapp.com/term.html Privacy policy: https://www.rapidbooksapp.com/privacy.html If you have any problem or suggestion, please contact us by mail info@rapidbooksapp.com, we will reply to you as soon as possible.

About

Invoice Maker Flex

Easily create, send, and track professional invoices and estimates for your business. Manage multiple users and devices, and get paid faster with integrated payment options. Perfect for freelancers and small business owners.

Highlights
  • Create professional invoices and estimates
  • Track paid and unpaid documents
  • Convert estimates to invoices
  • Export data as CSV
  • Add discounts and taxes
  • Support for multiple users and devices
  • Cloud sync and backup with subscription
Features
Read full description

Create, View, and Share Invoices as a Team Multiple Users & Devices Invoices Maker is the easiest way to create and manage professional invoices as a team. Whether you're with a customer, between jobs, or working from home, you can generate and send invoices and estimates instantly—helping you get paid faster. Perfect for small business owners, contractors, freelancers, cleaners, tradespeople, construction workers, and other service providers. Simple invoicing saves you time and keeps your business running smoothly. Create, send, and track invoices and estimates on your iPhone and iPad, and keep your finances organised in one place. How to Generate Invoices in Seconds Just add your customer’s info and items— Then generate a professional PDF invoice or estimate right away. That’s it. Everything’s done in minutes. This app also helps you track quotes, purchase orders, receipts, timesheets, and more in one hub. You can create up to 5 documents for free. Templates can also be adapted for paystubs by changing the titles. Key Features * Manually edit titles and currency codes (e.g. Invoice → Tax Invoice) * Set payment terms * Convert estimates into invoices with one tap * Track paid and unpaid invoices * Professionally designed templates * Export data as CSV for accounting software * Send PDF via email or text * Save PDF files in the Apple Files app * Attach photos * Add footer notes like website links or marketplace info (e.g. Wix, Mercari, Poshmark) * Enter payment details (e.g. PayPal, Paychex, Zelle, credit card, bank transfer) * Set up Tax, GST, VAT * Add discounts * Add signatures on the spot * Make it easy for clients to pay with payment hub details * Create invoices, estimates, and more—up to 5 free documents Upgrade to Subscription Version The subscription version includes cloud sync and backup so your data is securely stored and shared across multiple iOS devices. Subscription requires auto-renewal. Payment will be charged to your Apple ID account at the time of purchase. The subscription automatically renews unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours of the period ending. You can manage and cancel your subscription in your App Store account settings. Links to Privacy Policy and Terms of Use: http://www.btoj.com.au/privacy.html http://www.btoj.com.au/terms.html Please feel free to contact us if you have any questions. Simple invoicing will save your precious time.

Screenshots

Invoice Maker by RapidBooks4 screens
Invoice Maker Flex4 screens

Verdict

The call

The clearest difference is update cadence: Invoice Maker Flex at every 5 days against Invoice Maker by RapidBooks's every 5 months. Invoice Maker Flex also leads on iOS requirement (13.0 vs 15.0). On price, rating, review sentiment and ratings volume 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 by RapidBooks sells 14 in-app purchases, starting at $3.99 per 7 days and Invoice Maker Flex sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for Invoice Maker by RapidBooks against 4.8 for Invoice Maker Flex. Both are backed by a comparable volume of ratings — 20 and 49 respectively. Written reviews are what separate them: 100% of Invoice Maker by RapidBooks's written reviews are positive against 98% of Invoice Maker Flex's.

UpkeepUpdate frequency

Invoice Maker by RapidBooks ships an update every 5 months, Invoice Maker Flex every 5 days. The most recent releases landed on September 7, 2026 and September 17, 2026 respectively.

Scorecard2 real differences · 8 level
Invoice Maker by RapidBooks versus Invoice Maker Flex: the parameters behind the verdict, then further details
ParameterInvoice Maker by RapidBooksInvoice Maker Flex
PriceFreeFree
Rating4.8 (20 ratings)4.8 (49 ratings)
Positive reviews100.0% of reviews — better97.6% of reviews
Number of ratings2049 — better
Update frequencyEvery 5 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.013.0 — better
Further details — not scored
Size70 MB98 MB
Age rating4+4+
DeveloperMicroSingle Technology LimitedB TO J PTY LTD

Customer experience

Invoice Maker by RapidBooks

All ratings20 ratings
Positive95.0%
Neutral5.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Invoice Maker Flex

All ratings49 ratings
Positive93.9%
Neutral4.1%
Negative2.0%
Written reviews41 reviews
Positive97.6%
Neutral2.4%
Negative0.0%

In-app purchases

14 purchases

Invoice Maker by RapidBooks

Subscriptions14
  • Weekly Subscription$3.997 Days
  • Monthly Subscription$6.991 Month
  • Monthly Sub 40 Off Discount2 variants$7.991 Month
Show 11 more
  • Monthly Sub 40 Off Coupon$7.991 Month
  • Monthly Subscription$11.991 Month
  • Standard Monthly Subscription$11.991 Month
  • Monthly Subscription3 Months trial$11.991 Month
  • Annual Subscription7 Days trial$49.991 Year
  • Annual Subscription$49.991 Year
  • Annual Sub 40 Off Discount$59.991 Year
  • Annual Subscription7 Days trial$59.991 Year
  • Annual Subscription$99.991 Year
  • Standard Annual Subscription$99.991 Year
  • Annual Subscription3 Months trial$99.991 Year
2 purchases

Invoice Maker Flex

Subscriptions2
  • 1 Month Subscription$5.991 Month
  • 1 Year Subscription$49.991 Year

Questions

Is Invoice Maker by RapidBooks free?
Invoice Maker by RapidBooks is free to download, with in-app purchases available.
Is Invoice Maker Flex free?
Invoice Maker Flex is free to download, with in-app purchases available.
Which has better reviews, Invoice Maker by RapidBooks or Invoice Maker Flex?
Invoice Maker by RapidBooks and Invoice Maker Flex are both rated 4.8 out of 5 on the App Store, from 20 and 49 ratings respectively.
Do Invoice Maker by RapidBooks or Invoice Maker Flex have ads?
Neither Invoice Maker by RapidBooks nor Invoice Maker Flex shows ads.
Which is updated more often, Invoice Maker by RapidBooks or Invoice Maker Flex?
Invoice Maker by RapidBooks ships an update every 5 months, and Invoice Maker Flex every 5 days. Most recently, Invoice Maker by RapidBooks was updated on September 7, 2026 and Invoice Maker Flex on September 17, 2026.

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