# iMSB HoTT — Graupner telemetry display

> RC telemetry data display and logging for Graupner HoTT systems. (iPhone/iPad app by Thomas Styger.)

- Source: https://appshunter.io/ios/app/imsb-hott/id1118712081 (this page in markdown: same URL + `.md`)
- Developer: [Thomas Styger](https://appshunter.io/developer/559876191)
- Category: Entertainment, Utilities
- Price: Free
- Rating: 4.00/5 from 2 App Store ratings
- Age rating: 4+
- Requires: iOS 12.0 · 84 MB
- Languages: English, French, German
- Released: 2016-06-03
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/imsb-hott/id1118712081/reviews.md

## What is iMSB HoTT?

iMSB HoTT is an advanced telemetry data display and logging application running under iPhone and iPad. It is targeted for Graupner HoTT based RC transmitter systems and integrates support for a range of Graupner, as well as third party telemetry sensors that are compatible with the HoTT v.4 telemetry protocol.

iMSB HoTT offers a state of the art replacement for built in and external telemetry displays, including many more advanced features. Fully customisable iMSB HoTT supports several model definitions and allows tracking vital information from your model. Flight data is displayed in an easy readable form on several thematic views in analogue or digital form. iMSB HoTT not only displays real-time flight data, but is able to record and save flight sessions for later playback and analysis. It can be configured to alert the user when critical values are reached and provides valuable flight time statistics data. Additionally, in order to enhance safety and as modellers generally focus on their model rather than on a visual display iMSB HoTT fully supports voice based commands and announcements.

Features:
- Define individual models and assign each sensor value available in the real model from a list of available sensors
- Support for various thematic displays such as electrical and temperature values, vario, altitude, speed, heading and rpm, as well as flight track and model positioning on a map
- Minimum, maximum and average statistical data can be shown along the actual sensor value, as well as a graphical plot of it evolution over time
- Freely customise each display by assigning sensor values and their associated flight statistics to individual analogue meter views or digital display fields. The layout of each view can be defined among a set of predefined templates
- Individual alarm thresholds, as well as multiple level notifications for each sensor value can be setup directly in the application (no specific settings required at the real sensor level)
- Get notified of an alarm by issuing an alarm sound, display a message popup or a spoken notification
- Record real-time flight sessions and save them for later playback and analysis
- Control replay speed, cuing to a specific position, as well as pausing and resuming playback
- Integrated vario sound player
- Compare flight to flight, as well as model statistics. Plot several values simultaneously on a time graph for further data analysis
- iMSB HoTT incorporates a flexible voice based application navigation and command set for controlling various application features, requesting the announcement of a sensor value or even a whole set of values
- Displays sensor data in metric, imperial or nautical units
- Possibility to export flight log data over iCloud Drive, Dropbox or OneDrive in the LogView Open Format Zero (csv), Google Earth kmz or GPS NMEA format

Telemetry data is available at the transmitter in the form of a serial data stream. In order to transfer the data into an iPhone or iPad a dedicated iMSB HoTT Bluetooth Smart, also known as Bluetooth 4.0, module is to be used. This module is connected physically to the data port of your transmitter. Real time operation of iMSB HoTT is only compatible with Graupner HoTT v.4 based transmitter systems. All Graupner HoTT v.4 telemetry sensors are supported. Further details related to hardware requirements can be found on the iMSB web site.

But even if your transmitter is not yet ready for real-time logging, you can jump start exploring the power of iMSB HoTT with the built-in demo flight recordings.

## Key features

- Customizable telemetry data display
- Real-time flight data logging
- Voice command navigation and control
- Model-specific sensor assignment
- Alarm thresholds and notifications
- Flight data playback and analysis
- Export flight logs in various formats


## Frequently asked questions about iMSB HoTT

### What is iMSB HoTT used for?

iMSB HoTT is an advanced application for displaying and logging telemetry data from Graupner HoTT based RC transmitter systems. It allows users to track vital information from their models in real-time and analyze flight sessions later.

### Does iMSB HoTT support different RC models?

Yes, iMSB HoTT allows you to define individual models and assign each available sensor value from a list of compatible sensors. This ensures accurate data tracking for each of your RC models.

### Can iMSB HoTT alert me to critical values?

Absolutely. You can set individual alarm thresholds and multiple level notifications for each sensor value directly within the application. You will be notified via alarm sound, a message popup, or a spoken announcement.

### Does iMSB HoTT have voice commands?

Yes, iMSB HoTT fully supports voice-based commands and announcements. This allows for flexible application navigation and control, requesting sensor values, or even entire sets of data without needing to look at the display.

### What units does iMSB HoTT display sensor data in?

iMSB HoTT can display sensor data in metric, imperial, or nautical units. This flexibility allows users to choose the unit system they are most comfortable with for their RC models.

### Can I export my flight data from iMSB HoTT?

Yes, you can export flight log data over iCloud Drive, Dropbox, or OneDrive. The data can be exported in LogView Open Format Zero (csv), Google Earth kmz, or GPS NMEA format for further analysis.

### What is the update frequency for iMSB HoTT?

The latest version of iMSB HoTT is 3.9.2, which was last updated on February 22, 2022. While specific update frequency isn't detailed, this indicates regular maintenance and feature additions.

### Is iMSB HoTT available on multiple devices?

Yes, iMSB HoTT is designed to run on iPhone, iPad, and iPod devices. This broad compatibility ensures you can use it on your preferred Apple mobile device.

## Version history (last 5 releases)

### 3.9.2 — 2022-02-22

- Added possibility to customise value announcements
- Minor improvements

### 3.9.1 — 2021-11-24

- Minor User interface improvements
- Compatibility with new iOS 15

### 3.9 — 2021-05-06

iMSB release 3.9 is mainly focussed for experts wanting to extend the iMSB functionality by the means of specific lua scripts. In release 3.6 we already introduced the Lua Sensor Scripting library allowing a script to  be associated to a specific sensor value, evaluated on a regular basis during data logging. Lua scripting is a perfect tool for adapting functionality to user specific needs and perform complex data processing  not available in the standard app. With this release we even go a step further and introduce the iMSB Lua Widget Scripting library. With this library user specific widgets can be programmed and attached to an iMSB display view. Widgets are essentially a graphic representation of a display element, such as a meter, used to display sensor values or any other graphic representation. A Lua Widget is attached to a display view the same way as any other pre-defined meter.  Lua Widget scripts interoperate together with the Lua Sensor scripting library, to access sensor values and other attributes that need to be displayed in a Widget. The Widget library offers a great means to extend you display capabilities to suit you particular need by adding features not commonly available in the application. Please refer to the iMSB web site pages for further information and to access the programming reference guide.
A couple of other features and enhancements are as well available for this new release.

Features:
 • Added SM-Modellbau MicroVario to the available sensors list
 • Introduces the iMSB Lua Widget Scritpting library allowing developers to program user specific display view elements
 • Added a widget scripting editor and simulator to the display view layout configuration view
 • Added the possibility to import and store external imaged to be used with a lua widget script

Improvements:
 • Added a filtering mechanism in the flight logs view. Flight logs may now be sorted and filtered according to their model names
 • Extended the iMSB Sensor Scripting Library with a couple of new functions
 • Improved iCloud storage capability
 • Added a switch monitor in the sensor value scanner to monitor physical, logical and control switches. Note that aquiring switches is only available with for the internal fast protocol BT module

Bug Fixes:
 • Corrected some issues in the transmitter event triggering mechanisms that were not bevaving correctly, especially when start logging 
 • Small bug fixes and improvements
 • Corrected some translation errors in the SmarBox emulator

### 3.8.6 — 2021-01-07

New features:
- On a sensor alarm an new option allows now to repeat the alarm notification at defined time intervals
- Within the GPS and OLC sensors a new value has been added to indicated the distance, inside or outside, from the ideal triangle path. As with every sensor value alarms and reached value notifications can be set. Additionally the set alarm threshold can be visualised on the map alongside the triangle path.
- Added the pitot sensor to the Unilog2 sensor, that was previously missing

Improvements:
- Enhanced compatibility for iOS14
- The minimum iOS version required to run iMSB is now iOS12

### 3.8.4 — 2020-09-10

- Added a model type parameter that allows to select a specific icon shown on the map view
- Corrected display ranges for imperial and nautical units
- Speed values expressed in knots and miles are now displayed with one decimal precision
- Fixed wrong RX dBm value calculation
- Small UI adaptations and improvements

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## More apps by Thomas Styger

- [iMSB M-Link](https://appshunter.io/ios/app/imsb-m-link/id559876128)
- [iMSB FrSky](https://appshunter.io/ios/app/imsb-frsky/id1118712180)

All apps by Thomas Styger: https://appshunter.io/developer/559876191

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