SDI (SD for IOTA) is the only contest logger dedicated to the IOTA contest. It supports single-op unassisted entries, runs on Windows PCs, and is free.

Please try it - you will be up and running within 2 minutes. See for yourself the advantages of a dedicated IOTA logger.

For 14 years, from 1993 to 2006 inclusive, SDI was the leading IOTA Contest logger. Here are the stats for loggers used in recent IOTA Contests - thanks G3XTT and 5B4WN.




1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

2006

332
305
131
97
93
75
57
34
25
22
19
17
17
16
11
9



SDI by EI5DI
N1MM
Writelog
AATest
TR Log
CT
Win-Test
MixW
GenLog
UcxLog
RA9JB
LM
zLog
WA7BNM
NA
RCKLog

2007

434
409
142
137
134
86
69
42
42
40
21
20
18
16
13
9



N1MM
SDI by EI5DI
Writelog
Win-Test
AATest
TR Log
CT
MixW
UcxLog
WA7BNM
RCKLog
LM
CONTEST
GenLog
zlog
Lux-Log

2008

503
358
170
120
104
65
51
47
46
39
37
32
32
19
14
10



N1MM
SDI by EI5DI
Win-Test
AATest
WriteLog
UcxLog
TR Log
CT
LM
MixW
QARTest
GenLog
TR4W
RCKLog
HR Deluxe
Lux-Log