# SISMO® vs Nautide

The clearest difference is in-app purchases: SISMO® at none against Nautide's 2. SISMO® also leads on ads (none vs shown) and update cadence (monthly vs every 3 months). Nautide's advantage is chart position (#60 vs unranked) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Nautide sells 2 in-app purchases, starting at $6.99 per month. SISMO® asks for nothing beyond the download.

SISMO® ships an update monthly, Nautide every 3 months. Both last shipped on November 2, 2026.

## The numbers

| Metric | SISMO® | Nautide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (3.4K ratings)](https://appshunter.io/ios/app/nautide-tides-wind-waves-plus/id1413108902/reviews)** |
| Number of ratings | — | **3.4K** |
| Positive reviews | — | 67.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Best chart rank | — | **#60** |
| Size | 23 MB | 64 MB |
| Requires iOS | 17.0 | **12.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Hidromares](https://appshunter.io/developer/1018949738) | [Igoox](https://appshunter.io/developer/1152673523) |

## What reviewers say

### SISMO®

[App page](https://appshunter.io/ios/app/sismo/id1260280220)

**In-app purchases:** none


### Nautide

[App page](https://appshunter.io/ios/app/nautide-tides-wind-waves-plus/id1413108902)

**Currently charting:** #60 Top Grossing · Weather, #192 Top Free · Weather (US App Store)

Plan your maritime activities with comprehensive data on tides, waves, wind, and weather. Access detailed charts and forecasts for over 25,000 coastal stations worldwide, including fishing activity predictions and astronomical information.

**Highlights:** Tide charts and tables, Surf swell height and direction, Fish activity and solunar periods, Sunrise, sunset, and moon phases, Wind speed and direction, Coastal weather conditions, Marine open water forecast

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nautide PRO Monthly | $6.99 | per month |
| Nautide PRO Annual | $44.99 | per year |

**What reviewers like**

- 🚀 Accurate information
- 👍 Comprehensive data
- 👍 User-friendly interface
- 👍 Helpful for fishing/boating
- 👍 Great app overall

**What reviewers complain about**

- 🔒 Requires paid subscription to access full features
- 💸 Expensive subscription fee
- 🔍 Confusing navigation
- 🐛 Inaccurate weather/tide data
- 🔋 Excessive ads in free version

**Reported bugs**

- Paid subscription issues (e.g. not working, no access to content)
- App freezing or crashing
- Incorrect data display (e.g. water temperature)

**Requested features**

- Landscape mode support for tablets
- Ability to link forecasts to specific weather stations
- Integration with Apple Watch
- Offline access to data


## Frequently asked questions

### Is SISMO® free?

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

### Is Nautide free?

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

### Do SISMO® or Nautide have ads?

Nautide shows ads; SISMO® does not.

### Which is updated more often, SISMO® or Nautide?

SISMO® ships an update monthly, and Nautide every 3 months. Most recently, SISMO® was updated on November 2, 2026 and Nautide on November 2, 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.*