Comparison

BitPrism vs emu

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

Head to head
About

BitPrism

Features
Read full description

The App is made so you can play retro games through a emulator. This emulator does not provide any games but you will have to add your own through the file system. This emulator was made by a developer for a developer. Most emulators require you to watch many ads or pay way to much and i thought it was unfair so now we have this one.

About

emu

This app allows you to play classic games from seventeen different systems on your iPhone without complex setup. It supports various file formats and offers features like a unified library, customizable controls, and rollback saves. Enjoy local or online multiplayer with friends.

Highlights
  • Supports seventeen retro game systems
  • No downloads or configuration needed
  • Unified game library with search and favorites
  • Customizable on-screen and gamepad controls
  • Automatic saves and rewind functionality
  • Two-player online multiplayer
  • Supports various archive and disc image formats
Features
Read full description

emu runs seventeen game systems on one iPhone, from 8-bit cartridges to the disc-based 3D era. There are no cores to download and no configuration files to write. GETTING STARTED TAKES THREE STEPS 1. Pick a backup of a game you own from the Files app. 2. The system is identified from the file's contents, so you never choose one. 3. Tap it in your library and play. Files can stay inside a ZIP or 7z archive, and a CUE and its BIN files can be selected together. If a CUE points at a filename that no longer matches, emu repairs it on import. Large disc images are streamed into place rather than expanded in memory. ONE LIBRARY FOR EVERYTHING Search by name, star what you keep coming back to, and resume from the recent row. Import the same game under a different filename, or as both an archive and its extracted copy, and the CRC-and-size fingerprint still leaves you with a single entry. THE LAYOUT MOVES TO YOUR THUMBS The on-screen pad is multi-touch, with true diagonals and slide-to-change between buttons. Move the pad up or down, and pull the landscape buttons inward or outward. ANY GAMEPAD, MAPPED YOUR WAY Bluetooth and USB controllers connect on their own. Buttons are matched by position rather than by the vendor's printed labels, so a different controller still plays the same way. Reassign a button by pressing it, keep sticky 1P/2P assignment, and tune the stick dead zone. Touch input stays live alongside the gamepad. SAVES HAPPEN QUIETLY, MISTAKES ROLL BACK In-game and memory-card saves are written every 30 seconds, and again when you leave the player. SAVE and LOAD give you a quick state at any moment, and holding REWIND rolls the last seconds back for one more attempt at the jump you just missed. TWO IPHONES, TWO PLAYERS One player hosts and a code appears; the other types it in and joins as player 2. The player joining does not need a copy of the game. The two devices connect directly — gameplay never passes through a server, and a relayed route is detected after connecting and torn down. Two-player games for NES, SNES, PlayStation, Sega Saturn, Nintendo 64, Mega Drive, Master System and PC Engine can be hosted. BRING YOUR OWN GAMES — REQUIREMENTS DIFFER BY SYSTEM No games and no BIOS files are bundled, and nothing can be obtained from inside the app. Use backups of software you are legally entitled to use. Runs with just your game file: NES, SNES, Game Boy / Color, Mega Drive / Genesis, Master System, Game Gear, PC Engine / TurboGrafx-16, WonderSwan / Color, Nintendo 64, GameCube, PlayStation 2, PSP Also needs a BIOS you dumped from your own console: PlayStation, Sega Saturn, Game Boy Advance, Neo Geo Pocket / Color If you are here for Xbox: It needs three files you supply yourself — an MCPX ROM, a compatible Flash BIOS, and a hard-disk image. An unmodified retail Flash BIOS will not boot. Treat Xbox as experimental and for advanced users. ABOUT SPEED GameCube, PlayStation 2, Xbox and Sega Saturn support is experimental. The App Store build runs without a JIT, so how well a game plays depends on the title and your device. Please don't buy on the assumption that a particular game will run smoothly. FREE TO START The free version shows one banner and needs an internet connection. That banner only ever promotes the developer's own apps; there is no tracking-based advertising. A one-time in-app purchase hides it on every device signed in to your Apple Account. iPhone, iOS 17 or later. English and Japanese. emu is built on open-source emulators including ares, PPSSPP, Mupen64Plus, Dolphin, xemu, Play! and Yaba Sanshiro. Licenses and corresponding source links are under Settings > Licenses. All trademarks are the property of their respective owners. emu is not affiliated with, endorsed by or sponsored by any hardware manufacturer.

Screenshots

BitPrism4 screens
emu4 screens

Verdict

The call

The clearest difference is in-app purchases: BitPrism at none against emu's 1. BitPrism also leads on update cadence (daily vs every 2 days) and device support (3 vs 1). emu's advantage is ads (none vs shown). On price 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. emu sells 1 one-off in-app purchase. BitPrism asks for nothing beyond the download.

UpkeepUpdate frequency

BitPrism ships an update daily, emu every 2 days. The most recent releases landed on October 16, 2026 and October 22, 2026 respectively.

Scorecard5 real differences · 4 level
BitPrism versus emu: the parameters behind the verdict, then further details
ParameterBitPrismemu
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyDaily — betterEvery 2 days
AdsYesNo — better
In-app purchasesNo — betterYes
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better17.0
Further details — not scored
Size32 MB145 MB
Age rating4+4+
DeveloperBenjamin KararicCode and DESIGN inc.

In-app purchases

None

BitPrism

No in-app purchases

1 purchases

emu

One-time1
  • Hide Ads$4.99

Questions

Is BitPrism free?
BitPrism is free to download, with no in-app purchases.
Is emu free?
emu is free to download, with in-app purchases available.
Do BitPrism or emu have ads?
BitPrism shows ads; emu does not.
Which is updated more often, BitPrism or emu?
BitPrism ships an update daily, and emu every 2 days. Most recently, BitPrism was updated on October 16, 2026 and emu on October 22, 2026.

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