iGuzheng vs Sky Studio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iGuzheng
Learn to play the Guzheng with an innovative "Follow Play" feature that provides real-time prompts. This app supports numerous playing techniques and offers high-quality stereo samples for an authentic experience.
- Follow Play guided learning
- Supports 21 strings
- Authentic playing techniques
- High-quality stereo samples
- Flexible Guzheng view with zoom
- Smart pitch snapping
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***** Differences between this version and the Pro version: The Pro version offers more advanced features such as song recording, tuning, multiple instrument sounds, background and string color settings, and a metronome. The Follow Play songs in both versions are identical and are released simultaneously. iGuzheng's innovative "Follow Play" feature allows even complete beginners to effortlessly play professional Guzheng pieces! Guzheng is a Chinese plucked zither that dates back to 500 B.C. It is rich in playing techniques. The performer plucks the strings with his right-hand fingernails, while his left-hand fingers apply pressure to the strings to execute vibratos, slides, and other embellishments , as well as occasional plucking techniques. iGuzheng supports many playing techniques, like an acoustic Guzheng: · Playing techniques for Right Hand: Pluck, Glissando, Tremolo (Shake/摇指), Automatic Tremolo, Overtone · Playing techniques for Left Hand: Pitch Slide, Small Vibrato, Big Vibrato, Tap Pitch (Dian Yin – 点音) Main Features: √ Follow Play: iGuzheng's original "Follow Play" feature combines Guzheng playing symbols with string positions to provide real-time playing prompts, allowing even complete beginners to effortlessly play professional Guzheng pieces! ** Supports setting to follow only the right-hand part or both hands! ** When following only the right-hand part, iGuzheng will automatically play the left-hand part for you! ** Can be set to automatically play left-hand pressing actions: pressed notes, glissando, vibrato, etc. [Appendix] Meanings of various lines in Follow Play: Vertical line – Represents a "chord line," commonly used for major plucks, minor plucks, and chords. Wavy line – Represents a "glissando line," commonly used for ornamental notes, glissando, double thumb, heavy thumb, etc. Fine dashed line – Represents a "note group." All notes connected by fine dashed lines form a note group, which may consist of common fingering combinations (alternating thumb and middle finger, four-note patterns, etc.), grace notes, triplets, arpeggiated chords, rhythmic patterns, etc. Horizontal thick dashed line – Represents a "tremolo line," indicating the start and end times of the tremolo. √ Flexible Guzheng View — easy scrolling and zooming with drag/pinch gestures on the Pitch Slider Bar. √ High-quality stereo samples from Guzheng. √ Full 21 strings. √ Automatically play "Shake" technique (自动摇指) when you move your touch on the string horizontally. √ Smart snapping to the correct pitch grid when moving the pitch slider. √ Portamento / Vibrato. √ Overtone : use two fingers to tap strings at the same time. √ "Dian Yin" Effect (点音/Tap Pitch) : tap the pitch slider after plucking a string to create the "Dian Yin" sound effect. √ Tuning as standard Guzheng tunings.
Sky Studio
Create, practice, and play sheet music for "Sky: Children of the Light." Features include composing with editing tools, practicing with adjustable settings, and an instrument pad for free play. Supports multiple music file formats.
- Compose sheet music
- Practice sheet music
- Instrument pad mode
- Save and load scores
- Metronome
- Multiple supported formats (JSON, ABC, MIDI)
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[Note: This app is not made by That Game Company.] The Sky Studio is a tool to make & practice the sheet music of "Sky: children of the light" simply. -Overall feature- 1. Compose mode: Create sheet music, and listen to it. 2. Practice mode: Practice sheet music. 4. Instrument pad mode: Separate instrument pads to play freely. [Compose mode] 1. Save & Load the sheet music 2. Play & Pause 3. Metronome 4. Double layer system 5. Copy, cut, erase, and delete portions of sheet music 6. Select BPM, Pitch, Instrument [Practice mode] 1. Load 2. Practice system(Repeating a specific section, Hiding key, etc) 3. Resize pad, and toggle sheet view mode 4. Play & Pause the sheet 5. Metronome 6. Select BPM, Pitch, Instrument [Instrument pad mode] 1. Select Pitch, Instrument 2. Resize pad 3. Metronome [ETC] 1. Cave effect(Thanks to Specy) [Supproted format] 1. Json - Compatible with many other fan made programs, support encryption. 2. ABC1/5 - Easy to understand. A1,A2,...,C4,C5 means 15 keys, '.' means delay. 3. Midi - Officially used format in music work. [Json - Encryption] The purpose of this feature is to prevent abusing other people's score for automatic playing in the game(macro). Please activate this when you share sheet files at the community.
Screenshots
Verdict
The clearest difference is price: Sky Studio at Free against iGuzheng's $0.99. Sky Studio also leads on in-app purchases (none vs 1) and update cadence (every 2 weeks vs every 6 weeks). On rating, review sentiment, 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
Sky Studio is free to download; iGuzheng costs $0.99 up front. iGuzheng sells 1 one-off in-app purchase. Sky Studio asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 4.4 for iGuzheng against 4.4 for Sky Studio. That said, the two scores are not equally well evidenced: Sky Studio has 118 ratings behind it against 10, so its average is the more settled of the two. Written reviews split almost evenly too, at 85% and 85% positive.
iGuzheng ships an update every 6 weeks, Sky Studio every 2 weeks. The most recent releases landed on September 22, 2026 and September 23, 2026 respectively.
| Parameter | iGuzheng | Sky Studio |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 4.4 (10 ratings) | 4.4 (118 ratings) |
| Positive reviews | 85.4% of reviews — better | 84.9% of reviews |
| Number of ratings | 10 | 118 — better |
| Update frequency | Every 6 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 130 MB | 80 MB |
| Age rating | +4 | 4+ |
| Developer | Supertintin Co., Ltd | JoneRyeol Kim |
Customer experience
iGuzheng
Sky Studio
In-app purchases
iGuzheng
- iGuzheng™⁺ Pro Version$1.99
Sky Studio
No in-app purchases









