Is it a problem of demo version? Or wrong setting?

Thanks!

Can you show your code in the callback which is getting the score value?

BTW, just for some background, the score doesn’t have a huge amount of utility in an application because it is extremely dependent on the recording environment. I have historically made it available because it is part of the returned information with a hypothesis and it seemed unhelpful to omit it from OpenEars when it was available, but I don’t advise relying on it for anything except relative values within a single app usage session (meaning, you can use score within one session to see if something is well-recognized compared to another utterance within the same session, but shouldn’t use constants as a universal cutoff that means “good recognition” or “bad recognition” because you’ll get surprises when the user interacts with the app from a greater mic distance or in a noisier environment than you tested in.

// somewhere in the .m
- (void)somewhere
{
    _controller = [[PocketsphinxController alloc] init];
    _controller.nBestNumber = 1;
    _controller.verbosePocketSphinx = kIsVerbose;
    [_controller setRapidEarsToVerbose:kIsVerbose];
    [_controller setRapidEarsAccuracy:10];
    [_controller setFinalizeHypothesis:TRUE];
    [_controller setFasterPartials:TRUE];
    [_controller setFasterFinals:FALSE];
    [_controller startRealtimeListeningWithLanguageModelAtPath:_pathToDynamicallyGeneratedGrammar
                                              dictionaryAtPath:_pathToDynamicallyGeneratedDictionary
                                           acousticModelAtPath:[self acousticModelPath]];

    // ... set up observer in the following
}

//
- (void) rapidEarsDidReceiveLiveSpeechHypothesis:(NSString *)hypothesis recognitionScore:(NSString *)recognitionScore {
    NSLog(@"rapidEarsDidReceiveLiveSpeechHypothesis: %@ (%@)",hypothesis, recognitionScore);
    _statusLabel.text = [NSString stringWithFormat:@"%@", hypothesis];
}

- (void) rapidEarsDidReceiveFinishedSpeechHypothesis:(NSString *)hypothesis recognitionScore:(NSString *)recognitionScore {
    NSLog(@"rapidEarsDidReceiveFinishedSpeechHypothesis: %@ (%p)", hypothesis, recognitionScore);
    
    _scoreLabel.text = [NSString stringWithFormat:@"%@", recognitionScore];
}

I understand the number is not that reliable. But the problem is that the number is not negative number, which is different from OpenEars.