# Diveplanner Tec & Rec vs Poseidon Reef

The clearest difference is in-app purchases: Poseidon Reef at none against Diveplanner Tec & Rec's 3. Poseidon Reef also leads on update cadence (every 5 weeks vs every 3 months). Diveplanner Tec & Rec's advantage is ads (none vs shown) and review sentiment (20% vs 0%). On price, rating, device support and iOS requirement there is nothing between them.

Both are free to download. Diveplanner Tec & Rec sells 3 one-off in-app purchases. Poseidon Reef asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 3.1 for Diveplanner Tec & Rec against 3.0 for Poseidon Reef. Both are backed by a comparable volume of ratings — 7 and 2 respectively. Written reviews are what separate them: 20% of Diveplanner Tec & Rec's written reviews are positive against 0% of Poseidon Reef's.

Diveplanner Tec & Rec ships an update every 3 months, Poseidon Reef every 5 weeks. The most recent releases landed on August 19, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | Diveplanner Tec & Rec | Poseidon Reef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (7 ratings)](https://appshunter.io/ios/app/diveplanner-tec-and-rec/id1506985833/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/poseidon-reef/id1581432645/reviews) |
| Number of ratings | **7** | 2 |
| Positive reviews | **20.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | **Free** | Ad-supported |
| Size | 37 MB | 58 MB |
| Requires iOS | 13.0 | **12.1** |
| Devices | iPhone, iPad, iPod, Mac | iPhone, iPad, iPod, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Sensetrails LLC](https://appshunter.io/developer/806088250) | [Poseidon Diving Systems AB](https://appshunter.io/developer/567839779) |

## What reviewers say

### Diveplanner Tec & Rec

[App page](https://appshunter.io/ios/app/diveplanner-tec-and-rec/id1506985833)

Plan technical and recreational scuba dives with detailed gas management, decompression schedules, and contingency planning. This tool helps divers quickly create and share dive plans for various depths and conditions.

**Highlights:** Technical and recreational dive planning, Multi-gas and CCR dive schedules, Bühlmann decompression model (ZH16L-C), Automatic contingency plans, Gas requirement and weight calculation, Dive table generation, Metric and Imperial units

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Two weeks free trial | Free | one-time |
| Tec Basic | $7.99 | one-time |
| Tec Advanced | $19.99 | one-time |


### Poseidon Reef

[App page](https://appshunter.io/ios/app/poseidon-reef/id1581432645)

This app helps divers log, plan, and analyze their dives. It offers detailed overviews, customizable dive logs, and advanced planning for various dive types. Connect your dive computer to manage data and firmware.

**Highlights:** Comprehensive dive logging, Detailed dive planning, Support for OC and CCR dives, Unlimited tank support, Decompression model selection, Dive computer connectivity, Cloud backup and firmware updates

**In-app purchases:** none


## Frequently asked questions

### Is Diveplanner Tec & Rec free?

Diveplanner Tec & Rec is free to download, with in-app purchases available.

### Is Poseidon Reef free?

Poseidon Reef is free to download, with no in-app purchases.

### Which has better reviews, Diveplanner Tec & Rec or Poseidon Reef?

Diveplanner Tec & Rec is rated higher. Diveplanner Tec & Rec averages 3.1 out of 5 from 7 ratings, while Poseidon Reef averages 3.0 from 2 ratings.

### Do Diveplanner Tec & Rec or Poseidon Reef have ads?

Poseidon Reef shows ads; Diveplanner Tec & Rec does not.

### Which is updated more often, Diveplanner Tec & Rec or Poseidon Reef?

Diveplanner Tec & Rec ships an update every 3 months, and Poseidon Reef every 5 weeks. Most recently, Diveplanner Tec & Rec was updated on August 19, 2026 and Poseidon Reef on June 2, 2026.

---

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