Baltic Deco Planner vs Abysner
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
Abysner
This app is an open-source dive planning tool designed for simplicity and ease of use. It supports various gas mixes and decompression models, allowing for accurate planning of technical and recreational dives. Its intuitive interface makes it suitable for use even in challenging conditions.
- Buhlmann ZHL-16 A, B, C models
- Multi-gas support (Air, Nitrox, Trimix, etc.)
- OTU and CNS tracking
- Customizable environmental settings
- Intuitive gas picker
- Automatic contingency plans
- Multi-level dive planning
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Abysner is an open-source, modern dive planning tool with a focus on simplicity and usability. Built to give something back to the diving community, its primary aim is not to be the most feature-rich, but to be quick, user-friendly, and straightforward. Whether you're planning a deep technical dive or just want to check your MOD, Abysner makes dive planning smooth, accurate, and fast—perfect for use even right beside the water. Supported Features: • Models: Supports Buhlmann ZHL-16 A, B, and C with gradient factors. • Multi-Gas Support: Plan dives with Air, Nitrox, Oxygen, Trimix, Helitrox, Heliox, and more. • Oxygen: Includes OTU and CNS tracking for safe dive planning. • Customizable Settings: • Set salinity and altitude according to the diving environment. • Adjust SAC rates, ascent/descent rates. • Fine-tune decompression stop intervals and last deco stop depth. • Control max PPO2 for both during deco stops and normal diving. • Gas Picker: An intuitive interface for selecting and managing gas mixes, with critical information at your fingertips. • Automatic Contingency Plans: Automatically adjusts for longer or deeper dives, with configurable extra time and depth. • Gas Planning: • Visual chart of gas requirements per mix. • Density and PPO2 info at maximum depths for each gas. • Multi-Level Dive Planning: Plan dives across different depths with ease. Please note: CCR planning is not available yet. More coming soon!
Screenshots
Verdict
The clearest difference is price: Abysner at $2.99 against Baltic Deco Planner's $18.99. Abysner also leads on rating (5.0 vs 4.7) and review sentiment (100% vs 91%). Baltic Deco Planner's advantage is ratings volume (49 vs 2) and iOS requirement (11.0 vs 15.3). On update cadence, 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
Baltic Deco Planner costs $18.99 and Abysner $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Abysner 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 2, so its average is the more settled of the two. Written reviews point the same way: 91% of Baltic Deco Planner's written reviews are positive against 100% of Abysner's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 11, 2026 and October 5, 2026 respectively.
| Parameter | Baltic Deco Planner | Abysner |
|---|---|---|
| Price | $18.99 | $2.99 — better |
| Rating | 4.7 (49 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 91.3% of reviews | 100.0% of reviews — better |
| Number of ratings | 49 — better | 2 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.0 — better | 15.3 |
| Further details — not scored | ||
| Size | 4 MB | 42 MB |
| Age rating | 4+ | 4+ |
| Developer | Eskil Olsen | Roelof Rene Smit |
Customer experience
Baltic Deco Planner
Abysner
In-app purchases
Baltic Deco Planner
No in-app purchases
Abysner
No in-app purchases
Questions
Is Baltic Deco Planner free?
Is Abysner free?
Which has better reviews, Baltic Deco Planner or Abysner?
Do Baltic Deco Planner or Abysner have ads?
Which is updated more often, Baltic Deco Planner or Abysner?
Other comparisons
