ArcEmu vs PianoFold
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
ArcEmu
Experience retro gaming on your Apple Watch, iPhone, and iPad. This emulator supports Game Boy, Game Boy Color, and Game Boy Advance cartridges. Enjoy features like multiplayer, cheats, and customizable controls.
- Game Boy, GBC, GBA emulation
- Multiplayer support
- Cheat codes
- Customizable on-screen controls
- Save State sharing
- iCloud support
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Turn your Apple Watch into a retro game console. Play Game Boy, NES, SNES, Genesis, and more on your wrist, with multi-touch controls and the Digital Crown. ArcEmu also runs on iPhone, iPad, and Apple TV. ▸ SUPPORTED CONSOLES Included for free: - Game Boy - Game Boy Color - Nintendo Entertainment System (NES) Available through in-app purchases: - Game Boy Advance - Pokémon Mini - Super Nintendo Entertainment System (SNES) - Atari 2600 - Sega Mega Drive / Genesis - Sega Master System - Sega Game Gear - Sega SG-1000 ▸ MULTIPLAYER AND LINK CABLE Play home-console games online and locally with friends, or link Game Boy and Game Boy Advance games over the internet. Game Link Cable supports up to four players in compatible games. Online play requires a Game Center account. ▸ SHARE ROMs WITH A CODE Import your ROMs on iPhone, keep them in iCloud, and download them directly to Apple Watch or Apple TV. Share them through iCloud using a code, including with an Apple Watch configured with Family Setup. ▸ SCREEN AND CONTROLS Move and resize the game screen, choose an LCD or CRT filter, and set up the controls the way you like them. On Apple Watch, use multi-touch controls, customize the control layout, and assign actions to the Digital Crown. On iPhone and iPad, adjust button positions and transparency, and play in any orientation. Connect a controller and customize its button mappings, or use a second controller on iPhone, iPad, and Apple TV. ArcEmu also supports iPhone Duo. ▸ MORE FEATURES - Accurate, high-performance emulation - Fast-forward at 2×, 4×, or maximum speed - Slow motion at 0.5× speed - Cheat codes with a built-in database of popular codes - Touch-based light gun controls for NES and SNES - Custom Game Boy color palettes - Button hold/sustain - Accelerometer support - Gyroscope support on iPhone and iPad, with Digital Crown input on Apple Watch - Haptic feedback on iPhone ▸ YOUR ROMs AND SAVES Keep your collection organized with per-console folders, sorting, and search. Import ROMs from ZIP and 7-Zip archives, use automatic saving, and share save states between devices. Both ROMs and save states can be stored in iCloud. ▸ APPLE WATCH COMPATIBILITY - Apple Watch Series 4 or later - Apple Watch SE or later - Apple Watch Ultra or later ArcEmu does not include any games or ROMs. ▸ GAMES FEATURED IN THE SCREENSHOTS - Acorn Grove: https://gibbongl.itch.io/acorn-grove - Big2Small: https://mdsteele.itch.io/big2small - Hauntsfield: https://alliemackie.itch.io/hauntsfield - µCity Advance: https://skylyrac.itch.io/ucity-advance Cheat codes may cause unexpected behavior or affect game stability and save data. ArcEmu is not affiliated with, endorsed by, or sponsored by Nintendo, Sega, or Atari. All trademarks belong to their respective owners.
PianoFold
Experience classical piano music by tapping tiles that glide across your screen. Play familiar melodies and accompaniments, with adjustable practice modes and leaderboards. Unlock the full game with a one-time purchase for endless musical exploration.
- Classical piano music gameplay
- 45 levels across nine chapters
- Practice room for each song
- Game Center leaderboards and achievements
- iPhone Duo folding screen optimization
- Camera-powered Room view
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MADE FOR IPHONE DUO PianoFold brings classical piano to your fingertips. Fold your iPhone Duo like a laptop: the upright screen becomes a window onto your room, while the tiles glide toward pads beneath your fingers. Your taps play the melody, with the accompaniment playing along. Play on iPhone and iPad, with a choice of the camera-powered Room view or a glowing dark stage. PLAY THE CLASSICS Discover 45 levels across nine chapters, from Ode to Joy to Für Elise, with music by Beethoven, Chopin, Mozart, Bach, Tchaikovsky and more. Tap in time, hold the long tiles and build your combo. Beat songs to open more, then return for three stars. Every chapter starts with two songs available, so there’s another to try when one gets tricky. Retry instantly, as often as you like. No lives, no waiting. Climb a Game Center leaderboard for every song, and All Songs for your total. Earn achievements as you play, with more arriving alongside new chapters. MAKE THE SONG YOURS Every song you unlock has a practice room. Slow it down, play either hand or both, and switch from tiles to an onscreen piano keyboard. Turn on Wait for me and the music pauses until you play each note. Practice the level’s excerpt or explore the full arrangement, at your own pace. Practice earns no stars and opens no levels. START FREE. UNLOCK ONCE. The first two chapters are free. Once you reach chapter two, Today’s song lets you play one song from the full game free each day, until midnight. A single Full Game purchase lets you progress through all nine chapters, with a practice room for every song you open. Chapters added later are included. No ads. No subscription. Just you and the music.
Screenshots
Verdict
The clearest difference is monetization model: ArcEmu at free against PianoFold's free with in-app purchases. ArcEmu also leads on ratings volume (1.3K vs 47) and rating (4.9 vs 4.7). PianoFold's advantage is update cadence (every 3 days vs every 2 weeks) and chart position (#28 vs unranked). On price, review sentiment, ads and in-app purchases 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
Both are free to download. ArcEmu sells 10 one-off in-app purchases and PianoFold sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
ArcEmu holds the better App Store score, 4.9 against 4.7. That said, the two scores are not equally well evidenced: ArcEmu has 1.3K ratings behind it against 47, so its average is the more settled of the two. Written reviews point the same way: 95% of ArcEmu's written reviews are positive against 87% of PianoFold's.
ArcEmu ships an update every 2 weeks, PianoFold every 3 days. The most recent releases landed on November 8, 2026 and November 12, 2026 respectively.
| Parameter | ArcEmu | PianoFold |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (1.3K ratings) — better | 4.7 (47 ratings) |
| Positive reviews | 94.6% of reviews — better | 86.7% of reviews |
| Number of ratings | 1.3K — better | 47 |
| Update frequency | Every 2 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Best chart rank | — | #28 — better |
| Devices | iPhone, iPad, Apple TV, Apple Watch — better | iPhone, iPad |
| Requires iOS | 16.0 — better | 27.0 |
| Further details — not scored | ||
| Size | 234 MB | 26 MB |
| Age rating | 4+ | +4 |
| Developer | Raffaele D'Amato | Brian Corrieri |
Customer experience
ArcEmu
PianoFold
Bugs and requests
ArcEmu
Reported bugs
3 issues- Occasional crashes
- Graphical glitches with certain ROMs
- Save data not transferring properly between devices
Requested features
6 requests- Add cheat/GameShark support
- Improve volume controls
- Implement fast forward/slow motion options
- Allow multiple save slots per game
- Improve Game Boy Color support
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- Add joystick/button support for Apple Watch
PianoFold
Not enough reviews yet to summarise bugs or requests.
In-app purchases
ArcEmu
- Unlock All (Upgrade 4)$0.99
- Game Boy Advance$0.99
- SNES$0.99
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- Pokémon Mini$0.99
- Atari 2600$0.99
- Mega Drive / Genesis$0.99
- Game Gear$0.99
- Master System$0.99
- SG-1000$0.99
- Unlock All (Upgrade 3)$1.99
PianoFold
- Full Game$4.99









