Playlist Duration

Channel · @mrsinn

Mr. Sinn

@mrsinn · 333K subscribers · 479 videos · newest 479 of 480

A course from this channel is on Best free SAT and AP courses on YouTube, ranked by total hours

Total watch time

2d 19h 53m

at 1× speed · exactly 2 days, 19 hours, 53 minutes, 21 seconds at 1×

Open on YouTube All uploads as a playlist JSON

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Uploads by year

9 years (newest uploads only)
YearVideosWatch timeAverage
2026246h15m
2025528h 23m9m 40s
2024254h 52m11m 41s
2023668h 24m7m 38s
2022779h 5m7m 4s
2021777h 44m6m 1s
2020577h 17m7m 40s
2019557h 42m8m 24s
2018468h 27m11m 2s

Playlists (43)

Every public playlist on the channel — open one for its full breakdown

Lengths are calculated on demand so this page stays fast.

#PlaylistVideosLength
1 AP Psychology 2026 Exam Prep 15 length →
2 APHG 2026 Exam Prep 17 length →
3 AP Psychology Unit 2 Review 11 length →
4 AP Psychology Unit 1 Review 10 length →
5 AP Psychology Unit 5: Health Psychology 9 length →
6 AP Psychology Unit 5 Review: Health Psychology 9 length →
7 AP Psychology Unit 4: Social Psychology & Personality 11 length →
8 AP Psychology Unit 4 Review: Social Psychology & Personality 11 length →
9 AP Psychology Unit 3 Review 13 length →
10 AP Psychology Unit 3: Development and Learning 11 length →
11 AP Human Geography Unit 7 Review 11 length →
12 AP Human Geography Unit 6 Review 12 length →
13 AP Human Geography Unit 5 Review 13 length →
14 AP Human Geography Unit 4 Review 11 length →
15 AP Human Geography Unit 3 Review 9 length →
16 AP Human Geography Unit 2 Review 13 length →
17 AP Human Geography Unit 1 Review 10 length →
18 AP Human Geography (Entire Course!) 74 length →
19 AP Psychology Unit Review Videos (Units 1-5) 4 length →
20 AP Psychology Review Scientific Inquiry & Research Methods 7 length →
21 AP Psychology Unit 9 Review 4 length →
22 Human Geography Concept Videos 10 length →
23 AP Psychology Unit 8 Review 11 length →
24 AP Psychology Unit 7 Review 11 length →
25 AP Psychology Unit 6 Review 8 length →
26 AP Psychology Unit 5 Review 12 length →
27 AP Psychology Unit 4 Review 6 length →
28 AP Psychology Unit 2 Review 11 length →
29 AP Psychology Unit 1 Review (Old CED) 8 length →
30 AP Human Geography Unit 7 Review 12 length →
31 APHG 1 Minute Review #Shorts 10 length →
32 AP Human Geography Unit 6 Review 13 length →
33 AP Human Geography Unit 5 Review 15 length →
34 AP Human Geography Unit 3 Review 10 length →
35 AP Human Geography Unit 0: FRQs, MC Tests, Tips & Tricks, Oh My! 21 length →
36 AP Human Geography Unit 4 Review 13 length →
37 Start Here First! 20 length →
38 Industrialization, Development & Economics Unit: AP Human Geo 23 length →
39 AP Human Geography Unit 2 Review 17 length →
40 AP Human Geography Unit 1 Review 12 length →
41 Types of Economies and Economic Systems 9 length →
42 Fundamentals of Economics 13 length →
43 Economics 56 length →

Longest uploads

Top 5 · 1h 58m and down
  1. Agriculture Unit Review (AP Human Geography) · 1:58:11 · 2018-11-27
  2. AP Psychology: Everything You Need To Know! (Units 0-5 Summarized) · 1:44:41 · 2026-05-09
  3. AP Human Geography: Everything You Need To Know! (Units 1-7 Summarized) · 1:12:26 · 2026-04-22
  4. AP Psychology Unit 1 Review [Everything You NEED to Know] · 1:08:01 · 2024-09-17
  5. AP Psychology Unit 2 Review [Everything You NEED to Know] · 1:02:09 · 2024-10-16
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Watch time: 2d 19h 53m · 479 videos

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Data from the YouTube Data API as of 2026-10-23 (cached). Uploads are counted newest first; private, deleted and live videos are excluded from totals.