Gas Blender Toolkit vs Decosoft
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gas Blender Toolkit
This comprehensive toolkit assists scuba divers in calculating and blending various gas mixtures like trimix, nitrox, and heliox. It offers features for both partial pressure and continuous blending, cost calculation, and utilizes ideal and real gas models for accuracy. Optimized for larger screens, it serves as a successor to a previous diving application.
- Partial pressure blending
- Continuous blending
- Trimix, nitrox, heliox calculations
- Ideal and real gas models
- Cost calculation
- Top off from storage
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Gas Blender Toolkit is a comprehensive, purpose-built calculator for technical and recreational scuba divers who blend their own breathing gases. FUNCTIONS • Partial-pressure gas blending with freely configurable fill order • Continuous / delta-gas blending method • Decanting from a storage bank, with calculation of the number of possible fills • MOD / END tables for standard scuba gases • pSCR loop oxygen-reduction calculation at constant volume ratio • CCR rebreather diluent END calculator for any depth and chosen PPO2 setpoint FEATURES • Real gas (Van der Waals) or ideal gas calculations • Cost calculation for each gas fill • Fully customizable standard gas list • Accounts for gas heating during filling • Clean, fast and easy to use • Available in English, German, Russian and Spanish Gas Blender Toolkit is the completely rewritten successor to the DIR-Wetnotes app, redesigned from the ground
Decosoft
Plan your dives with this comprehensive tech diving tool. It offers a user-friendly interface, advanced decompression models, and various dive calculators to ensure safe and enjoyable underwater adventures. Save, share, and prepare for every dive with detailed insights.
- User-friendly dive planning interface
- Bühlmann decompression model
- Detailed runtime table with graphs
- Support for OC and CCR
- Multiple dive calculators
- Save and share dive plans
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Meet Decosoft - your tech diving planner in your pocket. Benefit from a variety of features that help you compose the best dive plan. Easily prepare for your adventure ahead so you can enjoy every dive to the fullest. Main features: - User-friendly interface, designed to simplify dive planning - Bühlmann decompression model with gradient factors - Advanced dive settings - Detailed runtime table with graph, gas consumption and more dive details - Easy lost-gas preview of the dive plan - Support for Open Circuit (OC) and Closed Circuit Rebreathers (CCR) - Repetitive dives - Save tanks and plans for further use - Share your dives with others Diving calculators included: - Maximum bottom time - SAC - Surface air consumption - MOD - Maximum operational depth - END - Equivalent narcotic depth - EAD - Equivalent air depth - Best mix for depth - Gas blending Dive safely, dive with Decosoft. Try today!
Screenshots
Verdict
The clearest difference is price: Decosoft at Free against Gas Blender Toolkit's $2.99. Decosoft also leads on review sentiment (100% vs 60%). Gas Blender Toolkit's advantage is in-app purchases (none vs 8) and chart position (#129 vs unranked). On update cadence, ads, device support and iOS requirement 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
Decosoft is free to download; Gas Blender Toolkit costs $2.99 up front. Decosoft sells 8 in-app purchases, starting at $3.99 per month. Gas Blender Toolkit asks for nothing beyond the download.
Gas Blender Toolkit ships an update every 9 days, Decosoft every 2 weeks. The most recent releases landed on October 21, 2026 and October 8, 2026 respectively.
| Parameter | Gas Blender Toolkit | Decosoft |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 3.0 (2 ratings) — better | — |
| Positive reviews | 60.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 — better | — |
| Update frequency | Every 9 days — better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Best chart rank | #129 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 3 MB | 47 MB |
| Age rating | 4+ | 4+ |
| Developer | Oleg Gurevich | Michael Czolko |
Customer experience
Gas Blender Toolkit
Decosoft
In-app purchases
Gas Blender Toolkit
No in-app purchases
Decosoft
- Monthly Partner1 Month trial$3.991 Month
- Monthly14 Days trial$3.991 Month
- Annual Partners1 Year trial$39.991 Year
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- Ultimate14 Days trial$39.991 Year
- Ultimate Offer1 Year trial$39.991 Year
- Ultimate$20.99
- Ultimate$23.99
- Ultimate$29.99
Questions
Is Gas Blender Toolkit free?
Is Decosoft free?
Do Gas Blender Toolkit or Decosoft have ads?
Which is updated more often, Gas Blender Toolkit or Decosoft?
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