....
[label pp_fromNumber:0 toNumber:100 duration:1.5 animationOptions:PPCounterAnimationOptionCurveEaseOut format:^NSString *(CGFloat number) {
    // 此处自由拼接内容
    return [NSString stringWithFormat:@"%.2f",number];
} completion:^{
        
    // 完成的回调
}];

....
[label pp_fromNumber:0 toNumber:100 duration:1.5 animationOptions:PPCounterAnimationOptionCurveEaseOut attributedFormat:^NSAttributedString *(CGFloat number) {
        
    // 此处自由设置富文本属性的内容
    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@""];
    return attributedString;
} completion:^{
        
    // 完成的回调
}];

....
[button pp_fromNumber:0 toNumber:100 duration:1.5 animationOptions:PPCounterAnimationOptionCurveEaseOut format:^NSString *(CGFloat number) {
    // 此处自由拼接内容
    return [NSString stringWithFormat:@"%.2f",number];
} completion:^{
        
    // 完成的回调
}];

....
[button pp_fromNumber:0 toNumber:100 duration:1.5 animationOptions:PPCounterAnimationOptionCurveEaseOut attributedFormat:^NSAttributedString *(CGFloat number) {
        
    // 此处自由设置富文本属性的内容
    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:@""];
    return attributedString;
} completion:^{
        
    // 完成的回调
}];

[[PPCounterEngine counterEngine] fromNumber:0
                                   toNumber:999
                                   duration:2.f
                          animationOptions:PPCounterAnimationOptionCurveEaseOut
                              currentNumber:^(CGFloat number) {
        // lable控件
        self.numberLabel.stringValue = [NSString stringWithFormat:@"%ld",(NSInteger)number];
    } completion:^{
    		// 计数完成的回调
        self.numberLabel.textColor = [NSColor redColor];
    }];