# OLAS vs divemate

The clearest difference is in-app purchases: OLAS at none against divemate's 2. OLAS also leads on iOS requirement (15.6 vs 27.0). divemate's advantage is update cadence (weekly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. divemate sells 2 in-app purchases, starting at $8.99 per month. OLAS asks for nothing beyond the download.

OLAS ships an update every 2 months, divemate weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | OLAS | divemate |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 22 MB | 15 MB |
| Requires iOS | **15.6** | 27.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Ultimate Sports Engineering](https://appshunter.io/developer/1179244787) | [Michael Czolko](https://appshunter.io/developer/674555865) |

## What reviewers say

### OLAS

[App page](https://appshunter.io/ios/app/olas-wireless-marine-safety/id1477987097)

This app acts as a marine safety companion, tracking wireless safety devices to ensure crew, family, and pets stay onboard. It triggers alarms and logs GPS locations if a device goes out of range, aiding in rapid recovery and emergency services.

**Highlights:** Tracks OLAS transmitters (Tags, T2, Float-On), Virtual tether with high-volume alarm on breakage, Logs GPS location for rapid recovery, Solo Mode for automatic SMS alerts, Direct tracking or receiver integration, Engine immobiliser activation (with receiver), Battery status monitoring

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

**In-app purchases:** none


### divemate

[App page](https://appshunter.io/ios/app/divemate/id6818085951)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $8.99 | per month |
| Ultimate Annual | $69.99 | per year |


## Frequently asked questions

### Is OLAS free?

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

### Is divemate free?

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

### Do OLAS or divemate have ads?

Neither OLAS nor divemate shows ads.

### Which is updated more often, OLAS or divemate?

OLAS ships an update every 2 months, and divemate weekly. Most recently, OLAS was updated on November 3, 2026 and divemate on October 31, 2026.

---

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