# SailViewer Timer vs SailSizeCalc

The clearest difference is update cadence: SailSizeCalc at daily against SailViewer Timer's every 10 days. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SailViewer Timer ships an update every 10 days, SailSizeCalc daily. The most recent releases landed on September 30, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | SailViewer Timer | SailSizeCalc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 days | **Daily** |
| Size | 1 MB | 15 MB |
| Requires iOS | **17.2** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Master Sailing jdoo](https://appshunter.io/developer/1680451361) | [Rick Mc](https://appshunter.io/developer/1644648263) |

## What reviewers say

### SailViewer Timer

[App page](https://appshunter.io/ios/app/sailviewer-timer/id6497406672)

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

**In-app purchases:** none


### SailSizeCalc

[App page](https://appshunter.io/ios/app/sailsizecalc/id6746686907)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SailViewer Timer free?

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

### Is SailSizeCalc free?

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

### Do SailViewer Timer or SailSizeCalc have ads?

Neither SailViewer Timer nor SailSizeCalc shows ads.

### Which is updated more often, SailViewer Timer or SailSizeCalc?

SailViewer Timer ships an update every 10 days, and SailSizeCalc daily. Most recently, SailViewer Timer was updated on September 30, 2026 and SailSizeCalc on October 10, 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.*