The median app writes about a paragraph

The middle of the store is more restrained than you might expect. The median description runs 1,441 characters — roughly a couple of tight paragraphs — while the average sits higher at 1,650, pulled up by a long tail of maximalists who use every character available. The distribution is genuinely bimodal in spirit: a large group keeps it brief, and a second group writes until Apple physically stops them.

That 4,000-character wall matters. 3.2% of apps push right up against it, which is almost never an accident — it is a deliberate strategy of stuffing every feature, keyword, and testimonial in, on the theory that more text means more search matches and fewer unanswered questions.

What a very short description means

At the other extreme, 622 apps (1%) describe themselves in under 100 characters — a single line. This is the store's most ambiguous signal. Sometimes it is confidence: a focused utility whose job is obvious ("A simple, private to-do list.") needs no sales pitch. Just as often it is neglect — a listing thrown up once and never revisited, the same silence you see in a stale update date or an empty screenshot gallery. The one-liner is worth reading in context: pair it with the rating count and last-updated date and it usually resolves into one story or the other.

Which categories write the most

Description length is not spread evenly. The wordiest category, Graphics & Design, averages around 1,964 characters — the categories that write longest tend to be the ones selling a subscription or a complex feature set, where the description has to overcome hesitation before a purchase. Simple tools and games lean shorter, letting screenshots and the icon carry the pitch. In short: the more an app needs to convince you, the more it writes.

The bottom line

Read the description for its shape, not just its content. A maxed-out, keyword-dense wall is marketing working hard — skim it for the two or three features you actually care about and ignore the rest. A confident one-liner from a well-rated, recently-updated app is a good sign. A one-liner from an app with no ratings and no updates in a year is the listing equivalent of a dark, empty shop. The length is a clue; the rating count and update date tell you which clue it is.