Comparison

Simple Nitrox vs SPZ App

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

Head to head
About

Simple Nitrox

Features
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Simple Nitrox provides an easy to use and very visible calculation of Maximum Operating Depth for scuba diving. The most appropriate nitrox mix can also be calculated for a planned depth. Widgets can be added to the Home Screen for up to 5 tanks for easy access to the values for previously analysed tanks and the application. Supports metric and imperial, and o2 up to 99%.

About

SPZ App

Features
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Introducing SPZ App Beta, your dedicated companion for diving adventures in Slovenia. Our app is crafted to cater specifically to the needs and interests of the Slovenian diving community, offering a range of features designed to enhance your underwater experiences. Key Features: Localized for Slovenia: Tailored content and features for Slovenian divers, ensuring a relevant and personalized experience. User Information: Manage your personal diving profile with ease. Keep track of your diving certifications, equipment, and history. Digital User Card: Carry your diving credentials digitally. Our user card feature keeps you dive-ready at all times. Diving Data Management: Log your dives with detailed information such as depth, location, duration, and more, creating a comprehensive dive history. Intuitive Navigation: User-friendly menus and interfaces make navigation through the app a breeze. Continuous Updates: As a beta version, we're committed to regularly updating the app with new features, enhancements, and support based on your feedback. Why SPZ App Beta? Slovenia-Centric: Focused on the unique aspects of diving in Slovenia, offering localized content and support. Secure and Reliable: Prioritizing your data's security with robust protection, allowing you to store your information with confidence. Community Driven: We value your input. Help us refine and perfect SPZ App Beta with your suggestions and experiences. Dive Deep into Slovenian Waters Whether you're a local diving enthusiast or exploring waters, SPZ App Beta is here to guide your journey. Document, plan, and connect with the Slovenian diving community through our app. Download now and embark on your next underwater adventure! Please Note: Currently, SPZ App Beta is designed to support only the Slovenian diving community. We're eager to hear from you to improve and potentially expand our services. Your feedback is crucial in this beta phase to help us develop an app that truly resonates with divers in Slovenia and beyond!

Screenshots

Simple Nitrox3 screens
SPZ App4 screens

Verdict

The call

The clearest difference is in-app purchases: SPZ App at none against Simple Nitrox's 1. SPZ App also leads on update cadence (every 2 months vs every 29 months) and device support (3 vs 1). On price and 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

Both are free to download. Simple Nitrox sells 1 one-off in-app purchase. SPZ App asks for nothing beyond the download.

UpkeepUpdate frequency

Simple Nitrox ships an update every 29 months, SPZ App every 2 months. The most recent releases landed on September 12, 2026 and September 9, 2026 respectively.

Scorecard4 real differences · 2 level
Simple Nitrox versus SPZ App: the parameters behind the verdict, then further details
ParameterSimple NitroxSPZ App
PriceFreeFree
Update frequencyEvery 29 monthsEvery 2 months — better
AdsNoNo
In-app purchasesYesNo — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.013.0 — better
Further details — not scored
Size2 MB12 MB
Age rating4+4+
DeveloperSimon ChiversAndrej Flogie

In-app purchases

1 purchases

Simple Nitrox

One-time1
  • Simple Nitrox Full Access$0.99
None

SPZ App

No in-app purchases

Questions

Is Simple Nitrox free?
Simple Nitrox is free to download, with in-app purchases available.
Is SPZ App free?
SPZ App is free to download, with no in-app purchases.
Do Simple Nitrox or SPZ App have ads?
Neither Simple Nitrox nor SPZ App shows ads.
Which is updated more often, Simple Nitrox or SPZ App?
Simple Nitrox ships an update every 29 months, and SPZ App every 2 months. Most recently, Simple Nitrox was updated on September 12, 2026 and SPZ App on September 9, 2026.

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