EVE Pro vs Simple Invoice Maker
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
EVE Pro
This application helps teaching professionals manage their tasks, schedules, and student information. It allows for offline access, direct sales integration, and real-time synchronization with a central database. Designed for scuba diving instructors and businesses, it streamlines operations and enhances customer service.
- Task and schedule management
- Customer detail management
- Class attendance tracking
- Offline data access and synchronization
- Direct sales and booking integration
- Certification tracking
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EVE Pro is designed to work with the global, award winning array of EVE products distributed by Integrated Scuba Systems. It’s designed to assist teaching professionals working within, or remotely from, their company or place of work. A personal App that allows the user to manage their tasks, teaching and event schedules. Users can add new, and edit existing, customer details, update class attendance, insert teaching and student notes, send text messages and emails instantly to students and customers. Users may also track certifications and generally be productive on the go. The calendar interface allows users to view their current, past and futures activities. Teaching in remote locations? No problem, simply, tap the screen to select the days where you know you may be out of Wi-Fi or mobile range, download and administer your classes and events and synchronize instantly to the central database when you’re back in range. The perfect tool for working Livaboards, dayboats or teaching out in the wilderness. Want to make sales? EVE Pro connects directly to your online shop and booking agent, allowing you to make sales and bookings during down-time with your students. All information is updated live to your central company database. Data is recorded and backed up daily. Users may access their information from desktop, tablet or phone platforms, making EVE Pro the most versatile application available for teaching professionals. Download EVE Pro and expand your business to the next level. You’ll enjoy using EVE Pro to make your job easier. Your customers will love the increased level of service. Your company will enjoy the increased sales.
Simple Invoice Maker
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Simple Invoice Maker turns your iPhone into an invoicing desk. Create a professional invoice in under a minute, export it as a PDF, and send it to your client from wherever you are — the job site, the studio, the passenger seat. Built for freelancers, contractors, tradespeople, designers, tutors and small shops. No accounting degree, no monthly bookkeeping ritual, no desktop required. CREATE INVOICES IN MINUTES • 17 invoice templates, from plain and functional to polished and modern • Add line items with quantity, unit, price and per-item discounts • Your logo and hand-drawn signature on every invoice • Automatic totals, discounts and tax • Export and share as a clean PDF — email, message, or print it ESTIMATES AND QUOTES • Send an estimate first, then turn it into a real invoice with one tap • Estimates stay out of your revenue reports until they become invoices KEEP TRACK OF WHAT YOU'RE OWED • Mark invoices paid or unpaid as money lands • Reports tab shows paid versus outstanding at a glance • Due-date reminders so an unpaid invoice never quietly ages YOUR CLIENTS, SAVED • Reusable client records with billing address, contact details, company and VAT numbers • Pick a saved client and the invoice fills itself in SET IT UP ONCE • Business details, logo and signature saved for every future invoice • Configurable tax label and rate — VAT, GST, sales tax, whatever yours is called • Bank account details (account number, IBAN, BIC/SWIFT) printed on the invoice so clients can pay you • Invoice currency chosen per invoice, from 30+ currencies • Light and dark themes START WITH SOMETHING ON SCREEN New installs come with a couple of clearly labelled sample invoices, so you can see how the app works and try the templates before typing anything. Clear them in one tap when you're ready for the real thing. FREE AND PRO The free version includes 5 invoices, 3 templates, and a small "Created with SimpleInvoiceMaker" line on your PDFs. Pro unlocks: • Unlimited invoices and estimates • All 17 templates • No watermark on your invoices • Invoice due-date reminders Prefer to earn it? Share the app with someone who invoices and we'll add 30 days of Pro to your account. SUBSCRIPTION DETAILS Pro is available as a monthly, 6-month or annual auto-renewing subscription. Prices are shown in the app in your local currency before you confirm anything. Payment is charged to your Apple Account at confirmation of purchase. The subscription renews automatically unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage your subscription and turn off auto-renewal in your Apple Account settings after purchase. Privacy Policy: https://jigsawlab.com/privacy.php Terms of Use: https://jigsawlab.com/terms.php Questions, bugs or a feature you need? Write to us — this app gets built from what users ask for.
Screenshots
Verdict
The clearest difference is in-app purchases: EVE Pro at none against Simple Invoice Maker's 3. EVE Pro also leads on update cadence (monthly vs every 4 months) and iOS requirement (10.0 vs 16.0). 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
Both are free to download. Simple Invoice Maker sells 3 in-app purchases, starting at $3.99 per month. EVE Pro asks for nothing beyond the download.
EVE Pro ships an update monthly, Simple Invoice Maker every 4 months. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.
| Parameter | EVE Pro | Simple Invoice Maker |
|---|---|---|
| Price | Free | Free |
| Rating | 3.7 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Monthly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 65 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Integrated Scuba Systems, llc | iComet |
In-app purchases
EVE Pro
No in-app purchases
Simple Invoice Maker
- Monthly Subscription$3.991 Month
- 6 Months Subscription$19.996 Months
- 1 Year Subscription$39.991 Year
Questions
Is EVE Pro free?
Is Simple Invoice Maker free?
Do EVE Pro or Simple Invoice Maker have ads?
Which is updated more often, EVE Pro or Simple Invoice Maker?
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