Comparison

ChessBot vs CoachView Slowmo Video Player

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ChessBot

This app offers a comprehensive chess experience, allowing you to play against AI with adjustable difficulty, challenge friends, and analyze your games. It includes a detailed guidebook with lessons, openings, and puzzles to improve your skills.

Highlights
  • Play vs. AI with scalable ELO
  • Human vs. Human mode
  • Game management and sharing
  • PGN import/export
  • Board analysis and statistics
  • Chess openings, puzzles, and lessons
  • Play with friends via iMessage
Features
Read full description

ChessBot is an elegant chess app designed for Apple platforms — play, learn, and analyze on iPhone and iPad. Whether you are picking up your first pawn or refining a tournament repertoire, ChessBot pairs a strong chess engine with a clean, focused board. KEY FEATURES • Play against the computer or a friend — Human vs Human and Human vs Computer modes. • Strong engine hints — get the best next move whenever you are stuck, powered by a modern NNUE engine. • Encyclopedia of Chess Openings — explore and learn named openings from the full ECO catalog. • Classic or 3D board — switch between a crisp 2D board and a real-time 3D board. • Import & export PGN — bring in your games or share them anywhere, and preview PGN files right in the Files app. • Save & share games — keep your games organized and send positions to friends. • Play over iMessage — challenge friends to a game without leaving Messages. • Beautiful, native design — thoughtfully built for iPhone and iPad. Questions or suggestions? We would love to hear from you at chessbotapp@outlook.com.

About

CoachView Slowmo Video Player

Analyze athletic performance with frame-by-frame and slow-motion video playback. Draw on videos for comparison, add annotations, and record feedback to share with coaches or players. Improve technique by training your eye for detail.

Highlights
  • Slow motion playback
  • Frame-by-frame analysis
  • Screen drawing tools
  • AI pose overlay
  • Video annotations
  • Record and share feedback
  • Side-by-side video comparison
Features
Read full description

Analyze your athletic performance with a frame by frame breakdown or slow motion video playback. Draw lines and curves on the video for comparison. Share your breakdown screenshot with your coach or another player to get feedback. Stop guessing and start improving today by training your coach’s eye! CoachView is a cutting-edge video player designed specifically for coaches and athletes who want to improve their technique in any sport. CoachView works on any existing video, so there is no need to reshoot. Simply import the video and use the slowmo or frame by frame features to show an athlete how he or she can improve. You can even record your own analysis for easy sharing! We know CoachView works and has improved many a coaches eye! The app was created with the specific purpose of breaking down my own son’s pitching mechanics. It allowed his pitching coach to show him his incorrect hip/shoulder separation and work on issues specific to his delivery that are hard to spot in real-time. Features: -Slow Motion - Playback at 1/10, 1/4, 1/2, 3/4, or regular speed. Want to go fast? There are also options for 1.5x and 2x speed! -Frame by Frame - Need even finer control? Step through the video frame by frame. -Screen Drawing - Straight and freeform lines can easily be drawn over the video. Want to measure your pitcher’s drift? Draw a line at the beginning of the delivery and step through the leg lift frame by frame! -Pose View - toggle on/off an AI generated overlay of your player's bone structure. -Annotations - Add bookmarks throughout the video and quickly jump between key moments. Did you record an entire at-bat and want to jump between pitches? Annotations make that task super simple. You can even label each bookmark. -Record feedback - record a breakdown of your athlete’s performance and share it with them easily. -Side by Side Video Comparison: compare your player's mechanics to a reference coach or professional player frame by frame. You pick the videos for comparison and step through them at your own pace. (Requires Pro Upgrade) Privacy Notice: This app collects your device’s IP address, advertising ID, and other partner specific identifiers. These identifiers enable analytics to improve our app. Opt-out or learn more by visiting our Privacy Center, accessible from the app's settings. Terms of Use: http://www.firecrackersw.com/terms-service

Screenshots

ChessBot4 screens
CoachView Slowmo Video Player4 screens

Verdict

The call

The clearest difference is rating: CoachView Slowmo Video Player at 4.6 against ChessBot's 4.0. CoachView Slowmo Video Player also leads on ratings volume (611 vs 33) and iOS requirement (15.0 vs 18.0). ChessBot's advantage is in-app purchases (none vs 3). On price, review sentiment, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. CoachView Slowmo Video Player sells 3 in-app purchases, starting at $4.99 per month. ChessBot asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

CoachView Slowmo Video Player holds the better App Store score, 4.6 against 4.0. That said, the two scores are not equally well evidenced: CoachView Slowmo Video Player has 611 ratings behind it against 33, so its average is the more settled of the two. Written reviews complicate that: 67% of ChessBot's written reviews are positive against 62% of CoachView Slowmo Video Player's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ChessBot ships an update every 2 months, CoachView Slowmo Video Player every 3 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

Scorecard4 real differences · 6 level
ChessBot versus CoachView Slowmo Video Player: the parameters behind the verdict, then further details
ParameterChessBotCoachView Slowmo Video Player
PriceFreeFree
Rating4.0 (33 ratings)4.6 (611 ratings) — better
Positive reviews66.7% of reviews — better61.5% of reviews
Number of ratings33611 — better
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, Mac, Apple TV, Vision Pro — betteriPhone, iPad, iPod, Apple Watch
Requires iOS18.015.0 — better
Further details — not scored
Size163 MB19 MB
Age rating4+4+
DeveloperHengyu ZhouFirecracker Software

Customer experience

ChessBot

All ratings34 ratings
Positive73.5%
Neutral5.9%
Negative20.6%
Written reviews33 reviews
Positive66.7%
Neutral6.1%
Negative27.3%

CoachView Slowmo Video Player

All ratings611 ratings
Positive89.4%
Neutral3.1%
Negative7.5%
Written reviews39 reviews
Positive61.5%
Neutral10.3%
Negative28.2%

Bugs and requests

ChessBot

Not enough reviews yet to summarise bugs or requests.

CoachView Slowmo Video Player

Reported bugs

11 issues
  • Export fails with iCloud error message
  • Long videos won't play
  • App crashes and becomes unusable after multiple video uploads
  • Black screen on iPad
  • Video import extremely slow or hangs
Show 6 more
  • Cannot delete imported videos despite confirmation
  • App won't open after repeated use
  • Video doesn't appear in Files app
  • App doesn't recognize album folder on phone
  • Incompatible with MacBook Air M1 running Sequoia
  • General video playback and loading failures

Requested features

11 requests
  • Ability to move and adjust line endpoints for precise angle measurements
  • Overlay mode with variable transparency for comparing two videos
  • Variable sensitivity time scrubber for finer control
  • Video loop section feature with loop-only playback
  • Import videos directly from file system, not just photo gallery
Show 6 more
  • Batch import multiple files at once
  • Export frame as image with video resolution
  • Save analysis to camera roll
  • Frame-by-frame navigation buttons (+ and -) for precise stepping
  • Undo/erase last drawing step on screen annotations
  • Improved graphics and UI modernization

In-app purchases

None

ChessBot

No in-app purchases

3 purchases

CoachView Slowmo Video Player

Subscriptions2
  • CoachView Pro Monthly3 Days trial$4.991 Month
  • CoachView Pro Yearly3 Days trial$29.991 Year
One-time1
  • CoachView Pro$9.99

Questions

Is ChessBot free?
ChessBot is free to download, with no in-app purchases.
Is CoachView Slowmo Video Player free?
CoachView Slowmo Video Player is free to download, with in-app purchases available.
Which has better reviews, ChessBot or CoachView Slowmo Video Player?
CoachView Slowmo Video Player is rated higher. ChessBot averages 4.0 out of 5 from 33 ratings, while CoachView Slowmo Video Player averages 4.6 from 611 ratings.
Do ChessBot or CoachView Slowmo Video Player have ads?
Neither ChessBot nor CoachView Slowmo Video Player shows ads.
Which is updated more often, ChessBot or CoachView Slowmo Video Player?
ChessBot ships an update every 2 months, and CoachView Slowmo Video Player every 3 months. Most recently, ChessBot was updated on November 6, 2026 and CoachView Slowmo Video Player on November 7, 2026.

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