Comparison

CoachView Slowmo Video Player vs KettleForge

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

Head to head
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.

About

KettleForge

Features
Read full description

KettleForge is an interval timer for kettlebell sport that counts your reps while you lift. Set your rounds of work and rest, prop the phone against a wall, and start. The front camera watches the movement pattern and counts — no wearable, no sensor on the bell, no tapping between sets. COUNTS THE COMPETITION LIFTS Long cycle, jerk and snatch are recognised by the shape of the movement itself, not by a shake or a buzz. Each one has been counted in front of the camera against a real set and checked rep for rep. More lifts are on the way and they are listed in the app, greyed out, so you can see what is coming rather than wondering. Camera missed one? Tap the count and it goes in. START WITHOUT TOUCHING THE PHONE Raise either hand above your head for two seconds and the set begins. The count box pulses and ticks once a second so you know you have been seen — which matters three metres away with a bell in each hand. BUILT TO BE RUN BY EAR Your back is to the phone for most of a set, so the phases are told apart by the shape of the sound and not only by pitch: one soft note into Get Ready, two hard strikes when work begins, a triad left ringing at the end. It sounds through the silent switch, and it ducks your music rather than shouting over it. READ THE SET BACK Every rep is stored with the second it was counted, so a workout is more than a total. Read your pace minute by minute and round by round — because 120 reps in ten minutes can be twelve a minute all the way down, or twenty for five minutes and then nothing, and that difference is the thing you actually train. WHAT YOU SET • Get Ready, work and rest durations, per round • How many rounds • Bell weight and whether you are lifting one or two • How much of the camera feed shows through the phase colour • Whether the camera counts, and whether a raised hand starts the set PRIVACY The camera is read frame by frame and never recorded. Nothing is uploaded, there is no account and no sign-in, and every workout stays on your phone. The privacy label says Data Not Collected because that is the truth. IPHONE AND IPAD One universal app. On iPad the counting works in any orientation, so you can stand it sideways on a bench and it still reads the lift. KETTLEFORGE PRO Progress, pace held, arm balance and goals are part of KettleForge Pro: monthly, yearly with a two-week free trial, or a one-time purchase. Everything you record stays free. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://partof.team/kettleforge-privacy.html

Screenshots

CoachView Slowmo Video Player4 screens
KettleForge4 screens

Verdict

The call

The clearest difference is in-app purchases: KettleForge at none against CoachView Slowmo Video Player's 1. KettleForge also leads on update cadence (every 2 days vs every 4 months). CoachView Slowmo Video Player's advantage is iOS requirement (15.0 vs 26.0). On price, ads and device support 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 1 one-off in-app purchase. KettleForge asks for nothing beyond the download.

UpkeepUpdate frequency

CoachView Slowmo Video Player ships an update every 4 months, KettleForge every 2 days. The most recent releases landed on October 12, 2026 and September 30, 2026 respectively.

Scorecard3 real differences · 7 level
CoachView Slowmo Video Player versus KettleForge: the parameters behind the verdict, then further details
ParameterCoachView Slowmo Video PlayerKettleForge
PriceFreeFree
Rating4.6 (610 ratings) — better—
Positive reviews61.5% of reviews—
Number of ratings610 — better—
Update frequencyEvery 4 monthsEvery 2 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size14 MB8 MB
Age rating4+4+
DeveloperFirecracker SoftwareRavil Khusainov

Bugs and 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

KettleForge

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

CoachView Slowmo Video Player

One-time1
  • CoachView Pro$9.99
None

KettleForge

No in-app purchases

Questions

Is CoachView Slowmo Video Player free?
CoachView Slowmo Video Player is free to download, with in-app purchases available.
Is KettleForge free?
KettleForge is free to download, with no in-app purchases.
Do CoachView Slowmo Video Player or KettleForge have ads?
Neither CoachView Slowmo Video Player nor KettleForge shows ads.
Which is updated more often, CoachView Slowmo Video Player or KettleForge?
CoachView Slowmo Video Player ships an update every 4 months, and KettleForge every 2 days. Most recently, CoachView Slowmo Video Player was updated on October 12, 2026 and KettleForge on September 30, 2026.

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