Baltic Blender vs VESC Tool
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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.
VESC Tool
Configure your VESC hardware remotely via WiFi or BLE. Log ride data, update firmware, switch profiles, and monitor battery status on the go.
- Configure VESC hardware
- Connect via WiFi or BLE
- Log ride data
- Update firmware
- Switch ride profiles
- View battery status
- Edit settings
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This is the mobile version of VESC Tool, which can be used to configure VESC hardware over WiFi or BLE. It can also be used to log ride data, update the firmware, switch ride profiles, view battery status, and edit settings on the go! For details, visit https://vesc-project.com
Screenshots
Verdict
The clearest difference is price: Baltic Blender at Free against VESC Tool's $3.99. Baltic Blender also leads on iOS requirement (10.3 vs 12.0). VESC Tool's advantage is rating (3.8 vs 2.9) and in-app purchases (none vs 2). On update cadence, 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
Baltic Blender is free to download; VESC Tool costs $3.99 up front. Baltic Blender sells 2 one-off in-app purchases. VESC Tool asks for nothing beyond the download.
VESC Tool holds the better App Store score, 3.8 against 2.9. Both are backed by a comparable volume of ratings — 11 and 39 respectively. Written reviews point the same way: 38% of Baltic Blender's written reviews are positive against 57% of VESC Tool's.
Baltic Blender ships an update every 4 months, VESC Tool every 8 months. The most recent releases landed on September 15, 2026 and September 28, 2026 respectively.
| Parameter | Baltic Blender | VESC Tool |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 2.9 (11 ratings) | 3.8 (39 ratings) — better |
| Positive reviews | 38.5% of reviews | 56.8% of reviews — better |
| Number of ratings | 11 | 39 — better |
| Update frequency | Every 4 months — better | Every 8 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | — | #32 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.3 — better | 12.0 |
| Further details — not scored | ||
| Size | 7 MB | 48 MB |
| Age rating | 4+ | 4+ |
| Developer | Eskil Olsen | Jeffrey Friesen |
Customer experience
Baltic Blender
VESC Tool
In-app purchases
Baltic Blender
- Trimix$4.99
- Volumes & Pricing$4.99
VESC Tool
No in-app purchases









