# DecoPlanner mobile vs Time to Surface

The clearest difference is in-app purchases: DecoPlanner mobile at none against Time to Surface's 3. DecoPlanner mobile also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). Time to Surface's advantage is update cadence (every 2 days vs every 2 months). On price, ads and monetization model there is nothing between them.

Both are free to download. Time to Surface sells 3 in-app purchases, starting at $2.99 per month. DecoPlanner mobile asks for nothing beyond the download.

DecoPlanner mobile ships an update every 2 months, Time to Surface every 2 days. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | DecoPlanner mobile | Time to Surface |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/time-to-surface-deco-planner/id6803187271/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 74 MB | 8 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Global Underwater Explorers Inc.](https://appshunter.io/developer/1459213336) | [RUSTAM ISMAILOV](https://appshunter.io/developer/6799582362) |

## What reviewers say

### DecoPlanner mobile

[App page](https://appshunter.io/ios/app/decoplanner-mobile/id1580563324)

Plan complex dive profiles using advanced decompression models. Track multiple gases, manage dive buddies, and visualize dive data with detailed graphs. Choose the version that suits your diving certification level.

**Highlights:** Open/Closed/Passive Semi-Closed Circuit planning, ZH-L16 / VPM-B decompression models, Gas tracking for multiple gases and dive buddies, Gas mixing (partial pressure & continuous blending), Dive profile and tissue compartment graphs, Diving level selection (Rec 1 to Unlimited CCR)

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

**In-app purchases:** none


### Time to Surface

[App page](https://appshunter.io/ios/app/time-to-surface-deco-planner/id6803187271)

This technical dive planner calculates staged decompression for dives up to 56 meters. It supports multiple bottom gases and one deco bottle, offering detailed gas planning, runtime tracking, and contingency solutions. The app also accounts for repetitive dives and provides a printable wetnote layout.

**Highlights:** Staged decompression planning (15-56m), Support for six bottom gases and one deco gas, Twin cylinder configuration, Bühlmann ZH-L16C model with adjustable gradient factors, Adjustable ppO2 and descent rates, Repetitive dive planning, Contingency scenario calculations

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diver.Today, monthly | $2.99 | per month |
| Diver.Today, yearly | $19.99 | per year |
| Diver.Today, for life | $49.99 | one-time |


## Frequently asked questions

### Is DecoPlanner mobile free?

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

### Is Time to Surface free?

Time to Surface is free to download, with in-app purchases available.

### Do DecoPlanner mobile or Time to Surface have ads?

Neither DecoPlanner mobile nor Time to Surface shows ads.

### Which is updated more often, DecoPlanner mobile or Time to Surface?

DecoPlanner mobile ships an update every 2 months, and Time to Surface every 2 days. Most recently, DecoPlanner mobile was updated on October 24, 2026 and Time to Surface on October 25, 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.*