# Dive Kit vs Time to Surface

The clearest difference is monetization model: Time to Surface at free against Dive Kit's freemium. On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Dive Kit sells 3 in-app purchases, starting at $4.99 per month and Time to Surface sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for Dive Kit against 5.0 for Time to Surface. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

Dive Kit ships an update every 4 days, Time to Surface every 3 days. The most recent releases landed on November 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Dive Kit | Time to Surface |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/dive-kit-deco-planner-and-tools/id6753089545/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/time-to-surface-deco-planner/id6803187271/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 days | **Every 3 days** |
| Monetization | Freemium | **Free** |
| Size | 128 MB | 9 MB |
| Requires iOS | **16.4** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [RONNY MAJANI](https://appshunter.io/developer/1842415083) | [RUSTAM ISMAILOV](https://appshunter.io/developer/6799582362) |

## What reviewers say

### Dive Kit

[App page](https://appshunter.io/ios/app/dive-kit-deco-planner-and-tools/id6753089545)

This app offers advanced decompression planning for technical divers, including trimix and CCR dives. It also provides a suite of free tools for gas analysis, consumption, and dive preparation. Users can store certifications and access dive signals offline.

**Highlights:** Decompression planning (Bühlmann ZH-L16C), Trimix, CCR, and Nitrox support, Gradient factors and contingency planning, Free dive tools (Best Mix, Gas Specs), Offline functionality, Certification wallet, Dive signal library

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Skuba Tools Pro Monthly | $4.99 | per month |
| Tip | $0.99 | one-time |
| Decompression Planner | $24.99 | one-time |


### 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 Dive Kit free?

Dive Kit is free to download, with in-app purchases available.

### Is Time to Surface free?

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

### Which has better reviews, Dive Kit or Time to Surface?

Dive Kit and Time to Surface are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do Dive Kit or Time to Surface have ads?

Neither Dive Kit nor Time to Surface shows ads.

### Which is updated more often, Dive Kit or Time to Surface?

Dive Kit ships an update every 4 days, and Time to Surface every 3 days. Most recently, Dive Kit was updated on November 8, 2026 and Time to Surface on October 31, 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.*