Comparison

Luna Controller vs Letter Forge

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

Head to head
About

Luna Controller

This app allows you to set up and manage your game controllers for a cloud gaming service. It also enables you to use your phone as a virtual controller to play games, with options for guest play and managing connections.

Highlights
  • Register Luna Controllers
  • Set up Wi-Fi and Cloud Direct
  • Use phone as virtual controller
  • Add guests to gaming sessions
  • Manage Bluetooth connection
  • Update controller software
  • Check battery status
Features
Read full description

The Luna Controller app allows you to set up and manage your Luna Controllers and play Luna games using your phone via the Phone Controller. With the Luna Controller app you can: - Register Luna Controllers to your Amazon account - Set up your Luna Controller to connect to wifi and enable Cloud Direct - Play games on Luna using touch inputs on your mobile device using the Phone Controller - Add friends to your local Luna gaming session using Guest Mode - Manage the Cloud Direct wifi connection - Manage your Luna Controller Bluetooth connection - Update the software on your Luna Controllers - Check battery status - Switch between Cloud Direct and Bluetooth - Get help for common troubleshooting problems To set up the Luna Controller: 1. Download and install the Luna Controller app on your mobile device. 2. Power up your Luna Controller with 2 AA batteries. Press and hold the Luna button for 3 seconds, and an orange light will start spinning 3. Open the Luna Controller app and follow the on-screen instructions To set up a Luna Phone Controller: No controller? No problem. You can use your phone to play Luna games. 1. Go to the appstore on your mobile device and install the Luna Controller app. 2. Sign into your Amazon account. 3. Select Play With Phone Controller. The next time you're ready to play, just follow these steps: 1. Open the Luna app on a compatible device, such as a compatible Fire TV, PC or Mac 2. Open the Luna Controller app on your mobile device. 3. Select Launch under your virtual controller and wait for your controller to connect to Luna. 4. Use the virtual controller to select the game you want to play and launch it. Guests can also download the Luna Controller app and join in on the gameplay. By using this app, you agree to Amazon’s Conditions of Use (www.amazon.com/conditionsofuse) and Privacy Notice (www.amazon.com/privacy).

About

Letter Forge

Features
Read full description

Letter Forge is a word puzzle built around one idea: drop a letter onto the grid, and if it completes a word, across a row or down a column — the word scores and clears. Simple to learn. Hard to stop. Pick your board size. 5×5 for a tight games. 6×6 when you want more room to build. Classic Mode gives you an endless stream of letters to place, with difficulty that rises as your score climbs. Stack words back-to-back for a COMBO multiplier. Earn coins and spend them on TAKE BACK, REROLL, or CONTINUE when the board fills up. Puzzle Mode flips it: the board comes pre-filled, you move letters into position. One optimal solution. Use HINT sparingly. 11 languages, 11 dictionaries — 180,000+ words. Play in the language you think in. • English • Español — accented vowels and Ñ • Français — ç, œ, full accented vowels • Deutsch — Ä Ö Ü ß • Türkçe — İ ş ğ ç handled correctly • Русский — Cyrillic with proper letter rarity • العربية — right-to-left layout, isolated letter forms • Português — ã ç õ ô and accented vowels • Italiano — full Italian dictionary • Nederlands — full Dutch dictionary with IJ ligature • Українська — Ї Є Ґ included More • Color tile mechanic — a word made entirely of matching-color tiles earns a COLOR COMBO on top • Multi-word bonus — one placement that closes two or three words scores double or triple • 8 original background music tracks synthesised at runtime — Calm, Wordsmith, Twilight, Sunbeam, Drift, Workshop, Riverflow, Lantern. No audio files shipped. • Soft haptic feedback on every tile placement • Light and dark themes • Auto-save — close mid-game, come back tomorrow, the board is where you left it • Tablet-adaptive layout — bigger board and tap targets on iPad

Screenshots

Luna Controller4 screens
Letter Forge4 screens

Verdict

The call

The clearest difference is ads: Luna Controller at none against Letter Forge's shown. Letter Forge's advantage is update cadence (every 2 days vs monthly). On price, in-app purchases, device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Luna Controller ships an update monthly, Letter Forge every 2 days. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 8 level
Luna Controller versus Letter Forge: the parameters behind the verdict, then further details
ParameterLuna ControllerLetter Forge
PriceFreeFree
Rating4.6 (7.7K ratings) — better—
Positive reviews28.8% of reviews—
Number of ratings7.7K — better—
Update frequencyMonthlyEvery 2 days — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size61 MB12 MB
Age rating4+9+
DeveloperAMZN Mobile LLCMurat Mustafa Ertan

Bugs and requests

Luna Controller

Reported bugs

4 issues
  • App crashes on launch
  • Virtual controller not working
  • Controller disconnects frequently
  • Compatibility issues with newer devices

Requested features

3 requests
  • Add support for Backbone controller
  • Allow using phone as controller for TV
  • Improve controller compatibility

Letter Forge

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Luna Controller

No in-app purchases

None

Letter Forge

No in-app purchases

Questions

Is Luna Controller free?
Luna Controller is free to download, with no in-app purchases.
Is Letter Forge free?
Letter Forge is free to download, with no in-app purchases.
Do Luna Controller or Letter Forge have ads?
Letter Forge shows ads; Luna Controller does not.
Which is updated more often, Luna Controller or Letter Forge?
Luna Controller ships an update monthly, and Letter Forge every 2 days. Most recently, Luna Controller was updated on November 7, 2026 and Letter Forge on October 31, 2026.

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