# HeatNext vs SAIL250®MD

The clearest difference is in-app purchases: SAIL250®MD at none against HeatNext's 1. HeatNext's advantage is iOS requirement (15.0 vs 18.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. HeatNext sells 1 in-app purchase, starting at $22.90 per year. SAIL250®MD asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 2, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | HeatNext | SAIL250®MD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[1.3 (18 ratings)](https://appshunter.io/ios/app/sail250md/id1640403470/reviews)** |
| Number of ratings | — | **18** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free |
| Size | 44 MB | 25 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NOMNIO d.o.o.](https://appshunter.io/developer/1440372439) | [Historic Ships In Baltimore, Inc.](https://appshunter.io/developer/1510752139) |

## What reviewers say

### HeatNext

[App page](https://appshunter.io/ios/app/heatnext/id1440372440)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus Package | $22.90 | per year |


### SAIL250®MD

[App page](https://appshunter.io/ios/app/sail250md/id1640403470)

Access comprehensive details about visiting ships, airshow performances, and festival locations. This app offers essential information for attendees of the Maryland airshow and related events.

**Highlights:** Ship visiting information, Airshow performance details, Flyover schedules, Festival site locations, Event information

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HeatNext free?

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

### Is SAIL250®MD free?

SAIL250®MD is free to download, with no in-app purchases.

### Do HeatNext or SAIL250®MD have ads?

Neither HeatNext nor SAIL250®MD shows ads.

### Which is updated more often, HeatNext or SAIL250®MD?

HeatNext ships an update every 2 months, and SAIL250®MD every 2 months. Most recently, HeatNext was updated on November 2, 2026 and SAIL250®MD on October 24, 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.*