Roll 20! vs ArcEmu
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Roll 20!
This app provides a convenient dice rolling experience directly on your Apple Watch. It supports various dice types, multiple rolls, and special mechanics like advantage/disadvantage, all without needing your phone.
- Supports d4, d6, d8, d10, d12, d20, d100
- Roll multiple dice simultaneously
- Advantage and disadvantage mechanics
- Customizable dice colors
- Dice rolling via tap, shake, Siri, or Shortcuts
- Always-On display and VoiceOver support
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Roll 20! is a dice roller made for Apple Watch. Raise your wrist, tap, and the dice tumble across the screen and land on your result. No phone, no table needed. DICE FOR EVERY GAME Roll a d4, d6, d8, d10, d12, d20 or d100. Perfect for Dungeons & Dragons, Pathfinder and any other tabletop role-playing game, board games and quick decisions. 3D DICE Real 3D dice that tumble and land on your result. Prefer the classic look? Switch to a big, clear number in Settings. ROLL SEVERAL DICE AT ONCE Roll up to 8 dice together, for example 3d6 for ability scores or 8d6 for a fireball. You see every die and the total. ADVANTAGE AND DISADVANTAGE Roll two d20 and keep the higher (advantage) or the lower (disadvantage) with one tap. The die that does not count fades out. NATURAL 20 AND NATURAL 1 A natural 20 gets a golden flash and a celebratory tap on your wrist. A natural 1 gets a wobble and a sad tap. The effects can be switched off. MODIFIERS Turn the Digital Crown or tap + and − to add a modifier. Add it once to the total, or to every roll. YOUR COLORS Choose a color for each die and for its numbers from the presets, or mix your own custom color. ROLL IN WAYS THAT FIT YOU • Tap the die, shake your wrist, or use Double Tap (Apple Watch Series 9, Series 10, Ultra 2 and later). • Ask Siri: "Roll a d20 in Roll 20!" • Use the "Roll dice" action in Shortcuts, or assign it to the Action button on Apple Watch Ultra. • Add the complication to your watch face and open a d20 straight from it. MADE FOR THE WRIST • Total of all your rolls, so you can keep track during a fight • Rolling sounds and haptics, each can be switched off • Always-On display support • VoiceOver support and Reduce Motion
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.
Screenshots
Verdict
The clearest difference is price: ArcEmu at Free against Roll 20!'s $0.99. ArcEmu also leads on rating (4.9 vs 3.7) and review sentiment (95% vs 63%). Roll 20!'s advantage is in-app purchases (none vs 10) and chart position (#133 vs unranked). On ads and iOS requirement 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
ArcEmu is free to download; Roll 20! costs $0.99 up front. ArcEmu sells 10 one-off in-app purchases. Roll 20! asks for nothing beyond the download.
ArcEmu holds the better App Store score, 4.9 against 3.7. That said, the two scores are not equally well evidenced: ArcEmu has 1.3K ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 63% of Roll 20!'s written reviews are positive against 95% of ArcEmu's.
Roll 20! ships an update every 5 weeks, ArcEmu every 2 weeks. The most recent releases landed on November 7, 2026 and November 8, 2026 respectively.
| Parameter | Roll 20! | ArcEmu |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.7 (42 ratings) | 4.9 (1.3K ratings) — better |
| Positive reviews | 63.0% of reviews | 94.6% of reviews — better |
| Number of ratings | 42 | 1.3K — better |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free — better |
| Best chart rank | #133 — better | — |
| Devices | iPhone, Apple Watch | iPhone, iPad, Apple TV, Apple Watch — better |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 234 MB |
| Age rating | 4+ | 4+ |
| Developer | Ziga Porenta | Raffaele D'Amato |
Customer experience
Roll 20!
ArcEmu
Bugs and requests
Roll 20!
Not enough reviews yet to summarise bugs or 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
In-app purchases
Roll 20!
No in-app purchases
ArcEmu
- Unlock All (Upgrade 4)$0.99
- Game Boy Advance$0.99
- SNES$0.99
Show 7 moreShow fewer
- 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









