Trimix Tools vs Baltic Deco Planner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Trimix Tools
This app provides essential tools for divers to plan and blend Trimix gases. It calculates optimal mixes based on depth, oxygen partial pressure, and equivalent narcotic depth, and supports various cylinder filling scenarios. Calculations are available offline and can be customized with saved settings.
- Trimix blending and planning
- Depth and partial pressure calculations
- Equivalent Narcotic Depth (END) calculation
- Saltwater and freshwater support
- Cylinder filling and bleed down calculations
- Metric and Imperial system support
- Offline functionality
- Saved settings and custom mixes
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Trimix blending and planning tools that can be used where you are and when you need them. You can use these tools to plan your mixes prior to arriving at the dive shop or to fill your cylinder at the air station or on the boat. Calculations are provided for the best Trimix given a planned depth and a desired maximum partial pressure of oxygen and equivalent narcotic depth (END). You can also calculate the ceiling and maximum depths along with your END based on your planned mix. The dive planning tools support both salt water and fresh water calculations. The blending tools provide for filling a cylinder with a remaining mix (or empty) to a specified target mix using oxygen, helium and a topping mix (air or another available mix). You can also calculate the result of topping an existing partially filled cylinder with a specific topping mix (air or another available mix). There is also a Bleed Down calculator that allows you adjust an existing full or partially full cylinder to a new mix with minimal wasted gas. Trimix Tools supports calculations in both metric and Imperial/US systems of measure. Traveling on a boat or working out of network range? These tools are at hand any time you have your iPhone, iPad or iPod touch. You could, for example, easily calculate the result of topping your cylinder from your first dive with air from the boat's compressor to take advantage of any remaining mix. You also have the convenience of saved settings that you can recall at a touch and adjust to a new situation as needed. Chances are you regularly work with a specific set of mixes and common dive situations. Trimix Tools includes the convenience of saved settings that you can recall and adjust to a new situation as needed. You can also select mix values using pre-installed default mixes or your own saved custom mixes. When updating one of the mixes for a tool you are offered a list of saved mixes that you can use directly or adjust as needed. You can save the currently displayed mix by tapping on the "+" button. Just like with the saved calculations, you can re-arrange or delete any mixes in your saved list. Do you need to share your planning or blending calculations with other divers? All the tools have the ability to share the results of the calculations from within the application. You can set default email addresses and a subject Trimix Tool's settings that will be automatically added when you share a result. All END calculations (Dive Planning and Best Trimix tabs) in Trimix Tools treat oxygen as a narcotic gas by default. There is an option available under the Settings tab to change the default so that oxygen is not treated as narcotic if that is your preference. Remember you must always personally analyze your mix before diving it. This application is not a substitute for proper training and should not be used as a substitute for proper dive planning or the primary Trimix blending and planning methods taught during training. Please do not attempt to handle high pressure oxygen or fill SCUBA cylinders without proper training.
Baltic Deco Planner
Plan complex technical dives with support for various breathing apparatus and gas mixes. Features advanced decompression algorithms, gas consumption tracking, and contingency profile planning. Easily store, export, and reuse dive plans.
- Decompression dive planning
- Open circuit and rebreather support
- Multi-level and repetitive dive support
- Gas consumption and OTU/CNS tracking
- Contingency profile planning
- VPM-B and ZHL16-B algorithms
- Dive plan storage and export
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Tool for planning staged decompression dives for technical divers. Supports open circuit and closed circuit rebreathers, multi-level and repetitive dives, nitrox, trimix, altitude adjustments, metric and imperial measurements. Keeps track of gas consumption, OTUs and CNS. Per dive configurable ascent/descent rates, last stop/stop interval settings and RMV/MOR. Any combination of OC and CCR planning is possible (CCR dives with OC levels/deco etc.). One tap access to lost-gas, bailout, deeper & longer contingency profiles. Constantly displays updated plan details as changes are made, and uses color highlighting to suggest best mixes. Dive plans can be stored in a bookmark folder for convenient reuse. Plans can also be exported via email or pasted into any other app. Features both VPM-B (based on Erik C. Bakers work) with configurable conservatism and ZHL16-B with configurable gradient factors for calculating decompression profiles. Also supports VPM-B/GFS. Please see www.balticdecoplanner.com for more info, bug tracking and support.
Screenshots
Verdict
The clearest difference is price: Trimix Tools at $6.99 against Baltic Deco Planner's $18.99. Trimix Tools also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 91%). Baltic Deco Planner's advantage is update cadence (every 2 months vs every 5 months) and ratings volume (49 vs 5). On 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
Trimix Tools costs $6.99 and Baltic Deco Planner $18.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Trimix Tools holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Baltic Deco Planner has 49 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Trimix Tools's written reviews are positive against 91% of Baltic Deco Planner's.
Trimix Tools ships an update every 5 months, Baltic Deco Planner every 2 months. The most recent releases landed on October 14, 2026 and October 11, 2026 respectively.
| Parameter | Trimix Tools | Baltic Deco Planner |
|---|---|---|
| Price | $6.99 — better | $18.99 |
| Rating | 5.0 (5 ratings) — better | 4.7 (49 ratings) |
| Positive reviews | 100.0% of reviews — better | 91.3% of reviews |
| Number of ratings | 5 | 49 — better |
| Update frequency | Every 5 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPod |
| Requires iOS | 15.6 | 11.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | Greg Mclaughlin | Eskil Olsen |
Customer experience
Trimix Tools
Baltic Deco Planner
In-app purchases
Trimix Tools
No in-app purchases
Baltic Deco Planner
No in-app purchases
Questions
Is Trimix Tools free?
Is Baltic Deco Planner free?
Which has better reviews, Trimix Tools or Baltic Deco Planner?
Do Trimix Tools or Baltic Deco Planner have ads?
Which is updated more often, Trimix Tools or Baltic Deco Planner?
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