# BlindSquare vs GPSlogger Kalman

The clearest difference is price: GPSlogger Kalman at $3.99 against BlindSquare's $39.99. BlindSquare's advantage is in-app purchases (none vs 1) and chart position (#197 vs unranked). On update cadence, ads and device support there is nothing between them.

BlindSquare costs $39.99 and GPSlogger Kalman $3.99 up front. GPSlogger Kalman sells 1 one-off in-app purchase. BlindSquare asks for nothing beyond the download.

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on October 20, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | BlindSquare | GPSlogger Kalman |
| --- | --- | --- |
| Price | $39.99 | **$3.99** |
| Rating | **[4.0 (61 ratings)](https://appshunter.io/ios/app/blindsquare/id500557255/reviews)** | — |
| Number of ratings | **61** | — |
| Positive reviews | 83.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#197** | — |
| Size | 66 MB | 15 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [MIPsoft Oy](https://appshunter.io/developer/400084253) | [Almansor Kerroum](https://appshunter.io/developer/1521553556) |

## What reviewers say

### BlindSquare

[App page](https://appshunter.io/ios/app/blindsquare/id500557255)

**Currently charting:** #197 Top Paid · Navigation (US App Store)

This app provides accessible navigation for blind and visually impaired individuals, both indoors and outdoors. It uses GPS and compass data, combined with location information, to verbally guide users to points of interest and street crossings. Users can also control the app via voice commands and integrate with popular navigation apps.

**Highlights:** Indoor and outdoor navigation, Verbal guidance to points of interest, Street crossing announcements, Voice command control, Integration with popular navigators, Save private locations, Foursquare client features

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Helpful for navigation
- 👍 Useful for blind/visually impaired users
- 💡 Provides details on surroundings
- 👍 Integrates well with other apps
- 👍 Frequent updates and improvements

**What reviewers complain about**

- 🐛 Inaccurate location/POI data
- 🐛 Connectivity issues (Bluetooth, GPS)
- 🔋 Battery drain
- 👎 Confusing interface/organization
- 💰 Expensive for some users

**Reported bugs**

- Crashing issues
- Incorrect address/street announcements
- Simulation mode problems
- Bluetooth connectivity failures

**Requested features**

- Turn-by-turn navigation
- Intersection details (left/right side)
- Public transit integration
- Voice control/commands
- Multi-language support


### GPSlogger Kalman

[App page](https://appshunter.io/ios/app/gpslogger-kalman/id1521553554)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $3.99 | one-time |


## Frequently asked questions

### Is BlindSquare free?

BlindSquare costs $39.99, with no in-app purchases.

### Is GPSlogger Kalman free?

GPSlogger Kalman costs $3.99, and also offers in-app purchases.

### Do BlindSquare or GPSlogger Kalman have ads?

Neither BlindSquare nor GPSlogger Kalman shows ads.

### Which is updated more often, BlindSquare or GPSlogger Kalman?

BlindSquare ships an update monthly, and GPSlogger Kalman monthly. Most recently, BlindSquare was updated on October 20, 2026 and GPSlogger Kalman on October 15, 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.*