# Say, Pi vs NaviGPS

The clearest difference is update cadence: Say, Pi at every 8 days against NaviGPS's every 3 weeks. NaviGPS's advantage is iOS requirement (15.6 vs 17.6). 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.

Say, Pi ships an update every 8 days, NaviGPS every 3 weeks. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Say, Pi | NaviGPS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 3 weeks |
| Size | 110 MB | 7 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Ross Cadogan](https://appshunter.io/developer/1723179563) | [Jorge Godoy](https://appshunter.io/developer/1736228613) |

## What reviewers say

### Say, Pi

[App page](https://appshunter.io/ios/app/say-pi/id6475053655)

**Features:** macOS Compatibility, Safari Extension

**In-app purchases:** none


### NaviGPS

[App page](https://appshunter.io/ios/app/navigps/id6748490851)

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

**In-app purchases:** none


## Frequently asked questions

### Is Say, Pi free?

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

### Is NaviGPS free?

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

### Do Say, Pi or NaviGPS have ads?

Neither Say, Pi nor NaviGPS shows ads.

### Which is updated more often, Say, Pi or NaviGPS?

Say, Pi ships an update every 8 days, and NaviGPS every 3 weeks. Most recently, Say, Pi was updated on October 11, 2026 and NaviGPS on October 9, 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.*