Comparison

Invoice App° vs Estimate 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 App°

Create professional invoices and quotes quickly on your mobile device. Get paid faster with integrated payment options and track your business performance with insightful reports. Features voice input for easy invoice creation.

Highlights
  • Professional invoice and quote templates
  • Integrated PayPal and Stripe payments
  • Business performance reports
  • Customer email open notifications
  • Voice input for invoice creation
  • Offer to invoice conversion
  • Customizable templates and color schemes
Features
Read full description

The perfect solution for small businesses and freelancers who need a fast and mobile invoicing tool. REASONS FOR INVOICEBOT • PROFESSIONAL LOOK AND FEEL Leave a professional impression with your customers. With our template selection this won't be problem at all. • GET PAID FASTER Use PayPal and Stripe to get paid faster than ever. • HOW IS YOUR BUSINESS See at a glance how your business is doing, how much you made the last couple of months, how much is still outstanding. • KNOW WHAT YOUR CUSTOMER IS DOING Get notified when your customer opens your email and downloads your document. • INTERNATIONALIZATION You operate in multiple countries? You can change language and currency in every invoice and offer. • VOICE INPUT You're tired of fiddling around when you create an invoice or offer? Simply use our voice bot! Just talk to it and it will do the creation for you. • BUILD BY BUSINESS OWNERS The team behind InvoiceBot has the same problems as you, that's why we created InvoiceBot, to solve them. INVOICEBOT INCLUDES • the smartest way of creating new invoices and estimates with our voice bot • on the go invoice and estimate creation, wherever you want • use the reports to see how your business is doing • on tap conversion of offer into invoice • selection of professional templates and pick your own color scheme • you're using some settings over and over again? we got you covered, store defaults for tax, payment details, notes, company details, clients and items • pick contacts from your address book and add them to InvoiceBot • discount a single item or apply it to the total • tax on a per item basis • send invoices via email or any other service you got on your phone • print invoices and estimates or export them as PDF • add images/attachments • track full or partial payments • get notified when your invoice is opened and read • your data is yours, export it with our powerful CSV export • never loose data with our integrated backup --- • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Payment will be charged to your iTunes account upon confirmation of your purchase • Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal. • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms of Service: https://invoicebot.io/terms.html Privacy: https://invoicebot.io/privacy.html

About

Estimate Maker Flex

Create and send professional estimates quickly and easily. Convert estimates to invoices with a single tap. Customize titles, currencies, and date formats for a personalized touch. Works offline and supports multiple templates.

Highlights
  • Create and send estimates
  • Convert estimates to invoices
  • Customizable titles and subtitles
  • Multi-currency support
  • Multiple date formats
  • Offline functionality
  • Professional templates
Features
Read full description

Create and send professional estimates on the spot. Turn estimates into invoices by a single tap. Close more business deals. How it works * Enter your info * Add customers manually or from Contacts * Add your products / services After that, you can create and send professional estimates instantly. Flexibility * Manually edit titles (e.g. Estimate -> estimación, Quote) * Manually edit subtitles (e.g. Billing address -> Bill to, Signature -> Approved by) * Multi-currencies (e.g. \$, £, ... Manually enter your currency code) * Date format (e.g. 04/18/2019, 18/04/2019, 18/Apr/2019) * Works without the internet * Import contacts from your existing contacts or manually create them * Payment term set up based on each customer (7 days by default) * Decimal hours or quantity supported * Five professionally designed beautiful templates * Delete items (e.g. Estimates, products, customers) by swiping to the left * Edit existing documents * Add signature and date on the spot * Icon, Signature, Note, Other comments fields won't appear if nothing is entered * Preview estimates before sending them as a PDF * Send as a PDF or print wirelessly * Create 5 estimates for free Professional Features * Add business registration name (ABN etc.) and number * Tax, GST, VAT set up (e.g. No tax, single tax, compound tax) * Add discount (Actual \$ or %) * Payment terms (Immediate, 7 days, 14 days, 21 days,... up to 180 days) * Add your company logo ### Mobility * Send directly from iPhone and iPad * Your personal estimate system in your pocket ### Upgrade to Subscription Version The subscription version offers cloud sync and backup features so that you can save all the info in our highly secured cloud services and share the same data across multiple iOS devices. Upgrading to the subscription version requires auto-renewal subscription. Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Links to Your 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 for anything. Simplify your life now.

Screenshots

Invoice App°4 screens
Estimate Maker Flex4 screens

Verdict

The call

The clearest difference is review sentiment: Estimate Maker Flex at 97% against Invoice App°'s 29%. Estimate Maker Flex also leads on rating (4.8 vs 4.3) and ratings volume (101 vs 12). Invoice App°'s advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and monetization model 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 App° sells 4 in-app purchases, starting at $5.99 per month and Estimate 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

Estimate Maker Flex holds the better App Store score, 4.8 against 4.3. That said, the two scores are not equally well evidenced: Estimate Maker Flex has 101 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 29% of Invoice App°'s written reviews are positive against 97% of Estimate Maker Flex's.

UpkeepUpdate frequency

Invoice App° ships an update every 3 weeks, Estimate Maker Flex every 8 days. The most recent releases landed on October 5, 2026 and October 13, 2026 respectively.

Scorecard5 real differences · 5 level
Invoice App° versus Estimate Maker Flex: the parameters behind the verdict, then further details
ParameterInvoice App°Estimate Maker Flex
PriceFreeFree
Rating4.3 (12 ratings)4.8 (101 ratings) — better
Positive reviews28.6% of reviews97.2% of reviews — better
Number of ratings12101 — better
Update frequencyEvery 3 weeksEvery 8 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFreemiumFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size43 MB99 MB
Age rating4+4+
Developermeisterwork GmbHB TO J PTY LTD

Customer experience

Invoice App°

All ratings12 ratings
Positive83.3%
Neutral8.3%
Negative8.3%
Written reviews7 reviews
Positive28.6%
Neutral0.0%
Negative71.4%

Estimate Maker Flex

All ratings101 ratings
Positive95.0%
Neutral4.0%
Negative1.0%
Written reviews71 reviews
Positive97.2%
Neutral0.0%
Negative2.8%

Bugs and requests

Invoice App°

Not enough reviews yet to summarise bugs or requests.

Estimate Maker Flex

Reported bugs

1 issue
  • App not opening

Requested features

2 requests
  • Add option to get client signature
  • Add signature of the person who made the estimate

In-app purchases

4 purchases

Invoice App°

Subscriptions3
  • Monthly Pro Subscription7 Days trial$5.991 Month
  • Monthly Pro Subscription$5.991 Month
  • Yearly Pro Subscription$49.991 Year
One-time1
  • Lifetime Pro Subscription$119.99
2 purchases

Estimate Maker Flex

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

Questions

Is Invoice App° free?
Invoice App° is free to download, with in-app purchases available.
Is Estimate Maker Flex free?
Estimate Maker Flex is free to download, with in-app purchases available.
Which has better reviews, Invoice App° or Estimate Maker Flex?
Estimate Maker Flex is rated higher. Invoice App° averages 4.3 out of 5 from 12 ratings, while Estimate Maker Flex averages 4.8 from 101 ratings.
Do Invoice App° or Estimate Maker Flex have ads?
Neither Invoice App° nor Estimate Maker Flex shows ads.
Which is updated more often, Invoice App° or Estimate Maker Flex?
Invoice App° ships an update every 3 weeks, and Estimate Maker Flex every 8 days. Most recently, Invoice App° was updated on October 5, 2026 and Estimate Maker Flex on October 13, 2026.

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