Comparison

Baltic Blender vs Diver Tools

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

Head to head
About

Baltic Blender

This app assists technical divers in accurately blending gases for SCUBA diving using advanced real gas models. It performs complex calculations for partial-pressure techniques, supporting nitrox and optional trimix upgrades. The tool aids in precise gas mixture creation, emphasizing safety and accuracy in diving preparations.

Highlights
  • Nitrox blending
  • Trimix blending (in-app purchase)
  • Volume and pricing calculations (in-app purchase)
  • Real gas law (GERG-2004)
  • Metric and imperial units
  • Simultaneous cylinder work
  • Bill printing/emailing
Features
Read full description

Technical diving gas partial-pressure blending app. Supports nitrox and - via in-app purchase upgrades - trimix and pricing/volumes used. Baltic Blender uses the GERG-2004 real gas model to allow a SCUBA gas blender to easily and accurately use partial-pressure techniques to blend available gasses to the desired final mixture. It is not intended as a substitute for proper training and certification in the safety, handling, and blending of high pressure gasses, but rather as a tool to perform the complex math required to reach the desired mixture. In such training classes, you would learn important safety information about the handling of high-pressure gasses. SCUBA gas blending is not to be taken lightly; it is one of the only activities where a mistake may not just kill you, but also those around you, or possibly the diver you are blending the gas for. Traditional blending techniques have two inherent errors which the blender must learn to compensate for, traditionally by adding a fudge-factor. First, traditional blending uses the simple ideal gas model, but the gasses we breathe, at SCUBA cylinder pressures, are far from ideal gasses. Baltic Blender uses the GERG-2004 real gas model which predicts how the real-world gasses behave. Second, traditional blending generally ignores the heating of the cylinder as gas is introduced, requiring the blender to either fudge or allow the cylinder to cool. Baltic Blender requires that the blender allow the temperature to stabilize, rather than cool, between each step, so that an accurate measurement of the cylinder wall temperature using a commercially available infrared thermometer reflects the temperature of the gas inside. Supports using preblended gas for eg. using leftover trimix or for using banked mixes. Features ; * Nitrox * Trimix (via in-app purchase) * Volume consumed & Pricing (via in-app purchase) * Blending and topping off * Metric and imperial units. * Simultaneous work on multiple cylinders * Grouping of tanks and pricing * Real Gas Law using GERG-2004 * Per cylinder configurable preblend * Easy to access temperature adjustments * Configurable list of default gases * Configurable standard temperature * Bill printing/emailing You can enter the data for multiple cylinders at once. Cylinders can be placed in groups for billing purposes. ** Trimix, volume consumed and pricing is only available via in-app purchase upgrades. ** GERG-2004; Kunz, O.; Klimeck, R.; Wagner, W.; Jaeschke, M. (2007): The GERG-2004 Wide-Range Equation of State for Natural Gases and Other Mixtures: GERG Technical Monograph 15 (2007) and Fortschr.-Ber. VDI, Reihe 6, Nr. 557, VDI Verlag, Düsseldorf, 2007. The partial GERG-2004 implementation used to calculate the compressibility factors of oxygen, helium, nitrogen and their mixtures in the gas phase was inspired by open source code written by David de Marneffe (daviddemarneffe[at]y a h o o . c o m) in December 2007.

About

Diver Tools

Features
Read full description

Experience the ultimate dive companion with Dive Genius! Designed for rebreather and technical divers, this app revolutionizes the way you prepare for your dives, ensuring safety and convenience every step of the way. Customizable Checklists: Say goodbye to paper-based checklists! Dive Genius allows you to create personalized checklists tailored to your specific needs. From equipment packing to dive plans, you can easily organize and manage all the essential details in one place. Now you control the order of checklist displays! No more relying on memory or risking incomplete preparations. Offline Calculations: Dive sites without internet access? No problem! Dive Genius comes equipped with a built-in calculator, empowering you to perform essential dive calculations even without an internet connection. From gas mixes to decompression stops, have all the vital calculations at your fingertips. Safety and Equipment Confidence: Ensure your dive equipment meets the highest standards with Dive Genius. Set your personal limits and rely on the app's checklists to avoid compromising situations with marginal equipment. Dive with confidence, knowing that you are fully prepared and equipped for a safe and enjoyable dive. Historical Cell Readings: For rebreather divers, Dive Genius offers unparalleled insights. Keep track of your rebreather cells' performance by reviewing the last four historical readings plus store vendor and lot details. Detect any unexpected changes and make informed decisions based on accurate data. Stay ahead of the curve and dive with peace of mind. Now with the ability to store 3, 4, 5 or 6 cells! Cave Conditions: See and report on the latest conditions in the caves! Don't miss out on the must-have app for tech divers and rebreather enthusiasts. Experience the convenience, safety, and reliability of Dive Genius today!

Screenshots

Baltic Blender4 screens
Diver Tools4 screens

Verdict

The call

The clearest difference is price: Baltic Blender at Free against Diver Tools's $9.99. Baltic Blender also leads on ads (none vs shown) and device support (3 vs 1). Diver Tools's advantage is in-app purchases (none vs 2) and update cadence (every 5 weeks vs every 4 months).

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

Baltic Blender is free to download; Diver Tools costs $9.99 up front. Baltic Blender sells 2 one-off in-app purchases. Diver Tools asks for nothing beyond the download.

UpkeepUpdate frequency

Baltic Blender ships an update every 4 months, Diver Tools every 5 weeks. The most recent releases landed on September 15, 2026 and September 8, 2026 respectively.

Scorecard6 real differences · 4 level
Baltic Blender versus Diver Tools: the parameters behind the verdict, then further details
ParameterBaltic BlenderDiver Tools
PriceFree — better$9.99
Rating2.9 (11 ratings) — better—
Positive reviews38.5% of reviews—
Number of ratings11 — better—
Update frequencyEvery 4 monthsEvery 5 weeks — better
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS10.3 — better16.0
Further details — not scored
Size7 MB3 MB
Age rating4+4+
DeveloperEskil OlsenMichael Gibby

In-app purchases

2 purchases

Baltic Blender

One-time2
  • Trimix$4.99
  • Volumes & Pricing$4.99
None

Diver Tools

No in-app purchases

Questions

Is Baltic Blender free?
Baltic Blender is free to download, with in-app purchases available.
Is Diver Tools free?
Diver Tools costs $9.99, with no in-app purchases.
Do Baltic Blender or Diver Tools have ads?
Diver Tools shows ads; Baltic Blender does not.
Which is updated more often, Baltic Blender or Diver Tools?
Baltic Blender ships an update every 4 months, and Diver Tools every 5 weeks. Most recently, Baltic Blender was updated on September 15, 2026 and Diver Tools on September 8, 2026.

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