# Baltic Deco Planner vs Abysner

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.

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.

## The numbers

| Metric | Baltic Deco Planner | Abysner |
| --- | --- | --- |
| Price | $18.99 | **$2.99** |
| Rating | [4.7 (49 ratings)](https://appshunter.io/ios/app/baltic-deco-planner/id304464483/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/abysner/id6636477320/reviews)** |
| Number of ratings | **49** | 2 |
| Positive reviews | 91.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | Paid |
| Size | 4 MB | 42 MB |
| Requires iOS | **11.0** | 15.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Eskil Olsen](https://appshunter.io/developer/304464486) | [Roelof Rene Smit](https://appshunter.io/developer/1762786000) |

## What reviewers say

### Baltic Deco Planner

[App page](https://appshunter.io/ios/app/baltic-deco-planner/id304464483)

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.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Abysner

[App page](https://appshunter.io/ios/app/abysner/id6636477320)

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.

**Highlights:** 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

**In-app purchases:** none


## Frequently asked questions

### Is Baltic Deco Planner free?

Baltic Deco Planner costs $18.99, with no in-app purchases.

### Is Abysner free?

Abysner costs $2.99, with no in-app purchases.

### Which has better reviews, Baltic Deco Planner or Abysner?

Abysner is rated higher. Baltic Deco Planner averages 4.7 out of 5 from 49 ratings, while Abysner averages 5.0 from 2 ratings.

### Do Baltic Deco Planner or Abysner have ads?

Neither Baltic Deco Planner nor Abysner shows ads.

### Which is updated more often, Baltic Deco Planner or Abysner?

Baltic Deco Planner ships an update every 2 months, and Abysner every 2 months. Most recently, Baltic Deco Planner was updated on October 11, 2026 and Abysner on October 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*