Comparison

SpatialEMU vs Bitty

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

Head to head
About

SpatialEMU

This app allows you to play your personal retro game collection on iPhone and iPad. It supports a wide range of classic systems and offers flexible control options, including virtual buttons and physical controllers. You can load games locally or connect to a self-hosted server for library management.

Highlights
  • Play retro games on iOS devices
  • Supports NES, SNES, PlayStation, PSP, and more
  • Load local game files or use a self-hosted server
  • Virtual and physical controller support
  • Customizable controller mapping
  • Local save states and progress syncing
Features
Read full description

SpatialEMU brings your own retro game library to iPhone and iPad. Organize a personal local collection, choose how each game is presented, and play with touch controls or supported physical game controllers. SUPPORTED SYSTEMS Play user-provided games for NES, SNES, Game Boy, Game Boy Color, Game Boy Advance, Nintendo DS, Mega Drive / Genesis, SEGA 32X, Master System, Game Gear, SG-1000, PlayStation, PSP, DOS, Neo Geo, CPS arcade systems, SEGA Model 2, SEGA Model 3, and supported MAME arcade hardware. Compatibility varies by title, file format, and required system files. LOAD LOCAL FILES OR USE YOUR OWN SERVER No server is required: open local games directly with the system document picker. FolioSpace Library is an optional, self-hosted personal library and is not part of the SpatialEMU client. It can run on a NAS or on a Docker-capable Mac, PC, or Linux host. Connect to your own server to browse, search, filter, and selectively download your catalog, save multiple server profiles, and synchronize supported battery saves and play records. PLAY YOUR WAY Use the app's virtual controls or supported Xbox, PlayStation, Nintendo, and other game controllers. Universal controller mapping supports global, per-system, and per-game profiles, button reassignment, axis inversion, dead zones, and sensitivity. SpatialEMU also provides Nintendo DS touch input, DOS keyboard and mouse controls, and specialized controls for supported arcade and mahjong titles. LOCAL-NETWORK CABINET LINK Supported SEGA Model 3 titles can create native cabinet-link sessions across multiple devices. Every device runs the same user-provided game locally while the LAN carries only cabinet-link data. Some larger room layouts remain clearly labeled experimental. LOCAL PROGRESS Keep local battery saves and save states for supported systems. Store separate progress for each game and synchronize supported save records through your own FolioSpace Library. IMPORTANT SpatialEMU does not include games, ROMs, BIOS files, firmware, encryption keys, copyrighted game content, or downloads for such content. You must provide files you have the right to use. Compatibility does not imply affiliation with the relevant hardware or game publishers. FolioSpace connection guide: https://spatialemu.com/guides/foliospace-connection/ Open-source notices and corresponding source: https://github.com/funland/SpatialEMU-Source Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ FREE FEATURES AND OPTIONAL PURCHASES Supported NES, SNES, Mega Drive / Genesis, GB, GBC, GBA, and all supported FBNeo systems (including CPS1, CPS2, CPS3 and Neo Geo) do not require Prime. Prime unlocks additional supported systems through a monthly subscription, annual subscription, or one-time lifetime purchase. Compatibility varies by game and platform. Subscriptions renew automatically unless canceled. Eligible earlier purchasers retain permanent Prime access after purchase-history verification. Purchasing lifetime Prime does not automatically cancel an existing subscription. Prices and purchase options appear in the app.

About

Bitty

This app allows you to play classic handheld games on your iPhone by importing your own legally owned game files. It offers features like save states, turbo mode, and customizable controls and visual filters for an authentic retro gaming experience.

Highlights
  • Import own game files (.gba, .zip)
  • Automatic battery saves
  • Save states for instant recall
  • Turbo mode for fast-forwarding
  • Customizable touch controls
  • Authentic screen filters
  • No accounts, sign-ups, or ads
Features
Read full description

Meet Bitty, your retro buddy! Bitty plays classic handheld games on your iPhone. Import your own game files and bring your childhood library back to life, wrapped in a friendly little app built for people who grew up with a cartridge in their pocket. YOUR GAMES, YOUR LIBRARY • Import your own legally-owned game backups (.gba or .zip) straight from the Files app • Bitty ships with no games and never downloads any — you bring the games you already own • Battery saves work exactly like real hardware and persist automatically PLAY YOUR WAY • Save states: snapshot any moment and jump right back to it • Turbo mode: fast-forward at 2×, 4× or 8× through grinding and long dialogue • Accurate, responsive touch controls with haptic feedback • Full sound emulation with adjustable volume MAKE IT YOURS • 4 controller skins: Classic, Midnight, Bubblegum and Ghost • Authentic screen filters: pixel-sharp, LCD grid, or cozy CRT scanlines • 4 gameplay themes to set the backdrop mood • A cast of hand-drawn art starring Bitty, your cartridge companion SMOOTH AND STEADY • Full speed with room to spare, even on older iPhones • Games run entirely on your device — nothing is streamed • Designed to stay cool and easy on the battery during long sessions RESPECTFUL BY DESIGN • No accounts, no sign-ups, no ads • Your games and saves stay on your device and are never uploaded • We collect anonymous usage stats only — how long sessions run and which features get used — to know what to improve. No personal data, no tracking, and never the names of your games. LEGAL NOTE Bitty contains no copyrighted content and is not affiliated with or endorsed by any console manufacturer. Only import games you legally own, such as backups of cartridges you purchased. Bitty does not provide, link to, or assist in downloading game files. Questions or a game that won't run? Contact us at support@solidstudiogame.com — we read everything.

Screenshots

SpatialEMU2 screens
Bitty4 screens

Verdict

The call

The clearest difference is monetization model: Bitty at free against SpatialEMU's paid. SpatialEMU's advantage is device support (6 vs 1). On price, rating, ratings volume and update cadence 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for SpatialEMU against 5.0 for Bitty. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

SpatialEMU ships an update every 11 days, Bitty every 5 days. The most recent releases landed on October 8, 2026 and October 11, 2026 respectively.

Scorecard2 real differences · 8 level
SpatialEMU versus Bitty: the parameters behind the verdict, then further details
ParameterSpatialEMUBitty
PriceFreeFree
Rating5.0 (1 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings11
Update frequencyEvery 11 daysEvery 5 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro — betteriPhone
Requires iOS18.018
Further details — not scored
Size388 MB12 MB
Age rating4+17+
Developer晓东 傅Anh Tuan Nguyen Le

Customer experience

SpatialEMU

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bitty

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

SpatialEMU

No in-app purchases

None

Bitty

No in-app purchases

Questions

Is SpatialEMU free?
SpatialEMU is free to download, with no in-app purchases.
Is Bitty free?
Bitty is free to download, with no in-app purchases.
Which has better reviews, SpatialEMU or Bitty?
SpatialEMU and Bitty are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do SpatialEMU or Bitty have ads?
Neither SpatialEMU nor Bitty shows ads.
Which is updated more often, SpatialEMU or Bitty?
SpatialEMU ships an update every 11 days, and Bitty every 5 days. Most recently, SpatialEMU was updated on October 8, 2026 and Bitty on October 11, 2026.

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