LingoDeer vs Duolingo: which app has fewer problems?
We compared 500 recent App Store reviews of LingoDeer and 500 recent App Store reviews of Duolingo, each classified by AI into 7 complaint themes (latest review 2026-10-22). LingoDeer has fewer complaints overall: 15% of its recent reviews contain a complaint, vs 31% for Duolingo.
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Ratings at a glance
| App | All-time US rating | Ratings | Avg in our sample | Reviews analysed | Reviews with a complaint | Sample dates |
|---|---|---|---|---|---|---|
| LingoDeer | 4.7★ | 28k | 4.41★ | 500 | 15% | 2026-05-12 – 2026-10-22 (164 d) |
| Duolingo | – | – | 3.66★ | 500 | 31% | 2026-10-11 – 2026-10-18 (8 d) |
Complaint themes side by side
| Theme | LingoDeer | Duolingo |
|---|---|---|
| Bugs | 3% (13) | 10% (49) |
| Crashes / freezes | 0% (0) | 1% (4) |
| Performance | 0% (0) | 2% (12) |
| UX / design | 2% (10) | 3% (17) |
| Pricing / subscription | 12% (58) | 14% (70) |
| Ads | 0% (1) | 6% (30) |
| Feature requests | 7% (33) | 14% (70) |
Verdict: which one has fewer problems?
Across the latest 1,000 App Store reviews we collected, LingoDeer has the lower share of reviews with a complaint (15%) and Duolingo the higher (31%). The biggest single difference is in feature-request complaints: 14% of Duolingo reviews mention them, vs 7% for LingoDeer. Each app's own biggest complaint theme: LingoDeer, pricing / subscription (58 reviews); Duolingo, feature requests (70 reviews). Average star rating in the samples: 4.41★ (LingoDeer) vs 3.66★ (Duolingo). Time span of each sample: LingoDeer 164 days (2026-05-12 to 2026-10-22); Duolingo 8 days (2026-10-11 to 2026-10-18). Because Duolingo's sample covers a much shorter period, a single recent update or outage weighs more heavily in its numbers.
- Fewer bug problems: LingoDeer, 3% of its reviews vs 10% for Duolingo.
- Crash and freeze complaints: roughly tied (LingoDeer 0%, Duolingo 1% of reviews).
- Performance (slowness, battery, storage) complaints: roughly tied (LingoDeer 0%, Duolingo 2% of reviews).
- UX / design complaints: roughly tied (LingoDeer 2%, Duolingo 3% of reviews).
- Pricing and subscription complaints: roughly tied (LingoDeer 12%, Duolingo 14% of reviews).
- Fewer ad problems: LingoDeer, 0% of its reviews vs 6% for Duolingo.
- Fewest feature requests: LingoDeer, 7% of its reviews vs 14% for Duolingo.
Top 3 specific issues for each app
LingoDeer
- Justify or adjust the price (43 reviews, severity 2.2/3)
- Ease paywall pressure (41 reviews, severity 2.3/3)
- Improve content quality (22 reviews, severity 2.1/3)
Duolingo
- Improve content quality (66 reviews, severity 2.0/3)
- Rethink usage limits (47 reviews, severity 2.0/3)
- Soften the redesign backlash (39 reviews, severity 2.3/3)
FAQ
Which has fewer problems overall: LingoDeer or Duolingo?
In the most recent App Store reviews we analysed, LingoDeer had the lower share of reviews with a complaint (15% of 500) and Duolingo the higher (31% of 500).
Which has fewer bug complaints: LingoDeer or Duolingo?
LingoDeer. LingoDeer: 13 of 500 recent reviews (3%); Duolingo: 49 of 500 recent reviews (10%).
Which has fewer crash and freeze complaints: LingoDeer or Duolingo?
In our samples they are roughly tied: LingoDeer: 0 of 500 recent reviews (0%); Duolingo: 4 of 500 recent reviews (1%).
Which has fewer pricing and subscription complaints: LingoDeer or Duolingo?
In our samples they are roughly tied: LingoDeer: 58 of 500 recent reviews (12%); Duolingo: 70 of 500 recent reviews (14%).
Which has fewer ad complaints: LingoDeer or Duolingo?
LingoDeer. LingoDeer: 1 of 500 recent reviews (0%); Duolingo: 30 of 500 recent reviews (6%).
What is the most common complaint about LingoDeer and Duolingo?
LingoDeer: pricing / subscription (58 of 500 reviews), top-ranked fix: “justify or adjust the price”; Duolingo: feature requests (70 of 500 reviews), top-ranked fix: “improve content quality”.
Full reports
- LingoDeer reviews: top complaints and what users want fixed
- Duolingo reviews: top complaints and what users want fixed
More comparisons
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