Comparison
Short answer: Digital TestAS is the current, primary format (computer-based, 3-subtest Core Module) and is what almost everyone should prepare for. Paper-based TestAS still runs a few times a year but is being phased out and has a different, 4-subtest Core Test structure.
| Digital TestAS | Paper-based TestAS | |
|---|---|---|
| Format | Computer, at a test centre | Pencil and paper |
| Status | Current, primary | Being phased out |
| Core structure | 3 subtests, 20 items / 25 min each | 4 subtests, 110 min total |
| Core subtests | Figure Sequences, Mathematical Equations, Latin Squares | Quantitative Problems, Inferring Relations, Completing Patterns, Numerical Series |
| Subject module | 10–15 testlets, 90 min | Named subtests, module-specific timing |
| Evaluation time | ~3 weeks | ~4 weeks |
Source: testas.de — Digital structure · testas.de — Paper structure
Unless your test centre or target university's deadline specifically requires the paper format, prepare for Digital — it's what most test centres now default to, and it's where TestAS is headed. If you do need Paper, the underlying reasoning skills overlap heavily (the two formats share the same broad ability areas), but the exact item structure and timing differ, so practice the format you'll actually sit.
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