Comparison

Project Budget 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

Project Budget

Estimate project budgets using Monte Carlo simulation. Break down projects into tasks, input cost probability distributions for each, and get a calculated budget. Ideal for planning and financial forecasting.

Highlights
  • Monte Carlo simulation for budget calculation
  • Decomposition of projects into tasks
  • Input triangular cost probability distributions
  • Parameter entry for cost distributions
  • Budget estimation for projects
Features
Read full description

The application uses Monte Carlo simulation to calculate a project's budget. The project is decomposed in smaller tasks. It is assumed that for each such task the triangular cost probability distribution is known and its parameters are hence entered. However no reason to panic, triangular distribution is the mathematical expression of the most simplistic answer to the question how much something is going to cost: it can't cost less than a, it can't cost more than b and most of the time costs c.

About

Invoice Maker

Create professional invoices and estimates quickly and easily. Customize templates with your business details, add client and product information, and send them instantly. Manage payments and track your billing history to get paid faster.

Highlights
  • Quick invoice creation
  • Customizable templates
  • Add clients, services, and taxes
  • Export to PDF
  • Payment tracking
  • Manage invoice history
Features
Read full description

Invoice Maker Need a fast and professional way to create invoices? Invoice Maker is your simple yet powerful tool for freelancers, small businesses, and entrepreneurs who want to save time and keep finances under control. With just a few taps, you can create detailed invoices, customize them with your business info, add client details, include products or services, and send them instantly to your customers. Key Features: - Quick and easy invoice creation - Customizable templates with your logo and details - Add clients, services, products, and taxes - Export invoices to PDF and share via email or messengers - Track payments and manage invoice history - Professional design for a polished look Whether you’re running a business, freelancing, or offering services, Invoice Maker helps you stay organized and get paid faster. Take the hassle out of paperwork - manage your billing in minutes! Privacy Policy: https://docs.google.com/document/d/1rOIWhzWT4ClQDTJsEySG53kvtlw7Y6p-tP_hfMy3gU8/edit?usp=sharing Terms of Use: https://docs.google.com/document/d/18xxG0fStRfk21FS8w2DFfVtlyrDNrmC5vIMgGoRxC0g/edit?usp=sharing

Screenshots

Project Budget4 screens
Invoice Maker4 screens

Verdict

The call

The clearest difference is price: Invoice Maker at Free against Project Budget's $1.99. Invoice Maker also leads on update cadence (every 3 days vs every 10 months). Project Budget's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads 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

Invoice Maker is free to download; Project Budget costs $1.99 up front. Invoice Maker sells 1 in-app purchase, starting at $6.99 per 7 days. Project Budget asks for nothing beyond the download.

UpkeepUpdate frequency

Project Budget ships an update every 10 months, Invoice Maker every 3 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
Project Budget versus Invoice Maker: the parameters behind the verdict, then further details
ParameterProject BudgetInvoice Maker
Price$1.99Free — better
Rating—4.9 (11 ratings) — better
Positive reviews0.0% of reviews—
Number of ratings—11 — better
Update frequencyEvery 10 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size2 MB9 MB
Age rating4+4+
DeveloperKonstantinos Ladiellisflamingo quokka

Customer experience

Project Budget

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Invoice Maker

All ratings11 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Project Budget

No in-app purchases

1 purchases

Invoice Maker

Subscriptions1
  • Premium Access To All Features3 Days trial$6.997 Days

Questions

Is Project Budget free?
Project Budget costs $1.99, with no in-app purchases.
Is Invoice Maker free?
Invoice Maker is free to download, with in-app purchases available.
Do Project Budget or Invoice Maker have ads?
Neither Project Budget nor Invoice Maker shows ads.
Which is updated more often, Project Budget or Invoice Maker?
Project Budget ships an update every 10 months, and Invoice Maker every 3 days. Most recently, Project Budget was updated on October 31, 2026 and Invoice Maker on October 24, 2026.

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