# 작심삼수 vs Diver Planner

The clearest difference is review sentiment: 작심삼수 at 100% against Diver Planner's 0%. 작심삼수 also leads on in-app purchases (none vs 1). Diver Planner's advantage is update cadence (every 2 days vs fortnightly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Diver Planner sells 1 one-off in-app purchase. 작심삼수 asks for nothing beyond the download.

작심삼수 ships an update fortnightly, Diver Planner every 2 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | 작심삼수 | Diver Planner |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.0 (1 ratings)](https://appshunter.io/ios/app/diver-planner/id6772659830/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | — | Free with in-app purchases |
| Size | 78 MB | 44 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Geumsu Co., Ltd.](https://appshunter.io/developer/1559710570) | [SEOHYEON JO](https://appshunter.io/developer/1887795951) |

## What reviewers say

### 작심삼수

[App page](https://appshunter.io/ios/app/id6759189149)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Diver Planner

[App page](https://appshunter.io/ios/app/diver-planner/id6772659830)

Plan complex dives with advanced decompression algorithms and multi-gas support. Log dives, manage trips, and blend gases with safety features and emergency contacts. Sync data across devices for seamless planning.

**Highlights:** Deco planning (Bühlmann ZHL-16C, VPM-B), Multi-gas, trimix, CCR, and repetitive dives, Dive log with Shearwater, Garmin, Subsurface import, Trip planning with gear checklist and no-fly clock, Gas blender for fill orders and safety checks, Safety warnings and emergency contacts

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Deco Planning | $14.99 | one-time |


## Frequently asked questions

### Is 작심삼수 free?

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

### Is Diver Planner free?

Diver Planner is free to download, with in-app purchases available.

### Do 작심삼수 or Diver Planner have ads?

Neither 작심삼수 nor Diver Planner shows ads.

### Which is updated more often, 작심삼수 or Diver Planner?

작심삼수 ships an update fortnightly, and Diver Planner every 2 days. Most recently, 작심삼수 was updated on October 25, 2026 and Diver Planner on October 25, 2026.

---

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