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What users hate about Slack

35% of the 500 most recent US App Store reviews of Slack are 1–2★. Here is what those users complain about, counted and quoted. Snapshot: October 2026.

Slack icon
Slack

Slack Technologies, Inc. · Business · reviews 2026-08-19 → 2026-10-18

4.14★all-time (54,009)
3.44★last 500 reviews
35%negative (1–2★)
14feature requests
5★234
4★41
3★52
2★58
1★115

Top complaints about Slack

Share of the 173 negative reviews that mention each theme.

Confusing UI & UX35 reviews · 20% of negative
★ Terrible UI …account. Another set of hoops I have to jump through when Slack automatically signs me out. Logging back in through google’s interface doesn’t get you into your slack account under the same Google email either, so you have to log in through slack’s interface into that same email v26.09.20 · 2026-09-13
Notifications27 reviews · 16% of negative
★ Slack disregards do not rate App Store setting …communication app out there. That said, it is buggy. Many bugs stay with it forever. I'm still waiting for them to fix the notification on my phone that says there's a new Slack message after I've already handled it on my computer. v26.09.40 · 2026-09-24
Crashes & bugs12 reviews · 7% of negative
★ Terrible quality for a paid app Looks like this is a forgotten app nobody supports. There are bugs that stay there for years and nobody fixes them. For example, from time to time a new message into a thread doesn’t get sent and just disappear… v26.09.20 · 2026-09-15
AI features7 reviews · 4% of negative
Login & account5 reviews · 3% of negative
Slow & performance5 reviews · 3% of negative
Price & subscription5 reviews · 3% of negative
Sync & data loss4 reviews · 2% of negative
Customer support1 reviews · 1% of negative

What Slack users are asking for

14 feature requests found in total.

Rating by recent version

See today's reviews and the full reportThis page is a snapshot. Run a live analysis of Slack (or any app, in 13 country stores) for free, then unlock every quote, all 14 feature requests, rating by version, repeated phrases and a Markdown export for Claude or ChatGPT – US$2.99, pay once.
Analyse Slack now – free preview

FAQ

What do users complain about most in Slack?

In 500 recent US App Store reviews, the biggest complaint themes among the 173 negative (1–2★) reviews are confusing ui & ux (35, 20%), notifications (27, 16%), crashes & bugs (12, 7%).

Is Slack getting worse?

Its all-time rating is 4.14★ from 54,009 ratings, while the last 500 written reviews average 3.44★. Written reviews skew negative on most apps, so compare the trend between versions rather than the absolute number.

How was this analysed?

Reviews dated 2026-08-19 to 2026-10-18 were read from Apple's public review feed and matched against complaint patterns (crashes, login, sync, pricing, ads, UI, updates, support and more). One review can count toward several themes.

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