Gridplay vs Jazz Scales Trainer
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gridplay
Create dynamic, multi-clip music videos with an innovative grid interface. Combine and divide cells, adjust individual clips, and add music to produce unique visual content for social media.
- Multi-clip grid interface
- Combine and divide cells
- Independent clip sound control
- Timeline editing
- Clip rotation and scaling
- Save to camera roll
- Share to social media
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Make quality quick-cut style music videos straight from your phone with Gridplay. Giving even the most experienced filmmakers a new experience, the innovative grid screen allows users to combine and divide cells at will in order to create dynamic videos. Add a song, trim clips, and adjust and scale each cell for extra flair. Turn your inspirational moments into the movie of your life with Gridplay. Features: 1. Takes up to 16 4x4 videoclips (These can be recorded or uploaded.) 2. Swipe to combine or divide the cells 3. Create and edit a timeline with multiple frames 4. Optimized for low-resolution (640p) on Instagram 5. Records up to 15 seconds. (5 minutes with extension) 6. Self-timer 7. Each clip has an independent sound control 8. Ability to save video to camera roll 9. Frame thickness and color settings 10. Automatically saves rough draft 11. Rotate, adjust, scale, and mirror each clip 12. Share to Vine Instructions: 1. Pick a cell and choose the camera mode. (Full screen vs. split screen, and back camera vs. front camera) 2. Swipe to combine cells, and swipe again to divide. 3. Press the "Film" button. 4. Set the timer up to 15 seconds. (If you have unlocked the extension, you can set the timer up to 5 minutes.) 5. When you finish with one frame, it will go to the next automatically. You need to set the timer for each frame. 6. If you don't like what you have recorded, tap to delete. If you don't want to fill up the other cells? No problem, just go to the next step. 7. Adjust the volume and position of each clip. 8. Trim the clips and add background music. 9. Save and share on Vine, Instagram, Facebook, Youtube, Tumblr, and email.
Jazz Scales Trainer
Master jazz improvisation with play-along exercises focused on scales. Practice single scales and transitions, with customizable accompaniment beats and chords. Prepare for jam sessions by analyzing your favorite songs and selecting scale proposals for each chord.
- Play-along jazz scale exercises
- Scale transition training
- Customizable accompaniment beats and chords
- Song analysis for scale selection
- Instrument configuration (clef, pitch, range)
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This app trains you on playing jazz solos with a variety of play-along exercises focused on jazz scales. Playing single scales as well as changing from scale to scale is trained. Various accompaniment beats and chords make practicing fun. Get ready for your next jam session by exercising your favorite songs. Listen and select from scale proposals for each bar of your song, after entering the song chords. Configure the app to adapt to your instrument (clef, pitch, range, etc.)
Screenshots
Verdict
The clearest difference is review sentiment: Jazz Scales Trainer at 80% against Gridplay's 36%. Jazz Scales Trainer also leads on rating (3.0 vs 2.4) and in-app purchases (none vs 1). Gridplay's advantage is update cadence (monthly vs every 22 months) and ratings volume (77 vs 2). On ads, monetization model 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
Gridplay costs $1.99 and Jazz Scales Trainer $2.99 up front. Gridplay sells 1 one-off in-app purchase. Jazz Scales Trainer asks for nothing beyond the download.
Jazz Scales Trainer holds the better App Store score, 3.0 against 2.4. That said, the two scores are not equally well evidenced: Gridplay has 77 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 36% of Gridplay's written reviews are positive against 80% of Jazz Scales Trainer's.
Gridplay ships an update monthly, Jazz Scales Trainer every 22 months. The most recent releases landed on October 26, 2026 and October 20, 2026 respectively.
| Parameter | Gridplay | Jazz Scales Trainer |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | 2.4 (77 ratings) | 3.0 (2 ratings) — better |
| Positive reviews | 35.9% of reviews | 80.0% of reviews — better |
| Number of ratings | 77 — better | 2 |
| Update frequency | Monthly — better | Every 22 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.3 — better | 15.2 |
| Further details — not scored | ||
| Size | 14 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Peta Vision | Martin Miller |
Customer experience
Gridplay
Jazz Scales Trainer
In-app purchases
Gridplay
- Expend video length to 5minute$0.99
Jazz Scales Trainer
No in-app purchases









