Comparison

Gun Builder Simulator vs Idle Gun Assembly

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

Head to head
About

Gun Builder Simulator

Explore a vast arsenal of realistic firearms, from assault rifles to pistols. Customize weapons with various attachments and experience authentic mechanics, including muzzle flashes and shell ejection. Enjoy unlimited ammo and simulation shooting with over 150 levels.

Highlights
  • Unlimited Ammo
  • Realistic Muzzle Flashes
  • 3D Ejecting Shells
  • Functional Attachments
  • Weapon Customization
  • Simulation Shooting
  • Shooting Range
Read full description

From the most popular military assault rifles to the pistols, machine guns, sniper rifles, shotguns, sub-machine guns with unlimited ammo, realistic muzzle flashes and 3D ejecting shells and functional attachments. Every single weapon is for free with all attachments unlocked. Contains many different camouflage accessories such as optics, lasers, lights, reflex sights and much more! All guns are completely customizable! If you are in love with guns as we are you'll experience an unforgettable experience! Airsoft fans will love this. ***FEATURES*** - Unlimited Ammo - Super Slow motion - Shake sensors to fire - Realistic smoke and muzzle flashes - 3D gun bullets and shells - Realistic Sounds - Authentic Weapon Mechanics - All screen supported modern gun weapons - Detailed HD & cool graphics - Simulation shooting - Selective fire - Shooting Range - Over 150 levels We have collected the best firearms in the world for our simulator: ***WEAPONS INCLUDE*** • Bushmaster ACR (adaptive combat rifle) • 1911 pistol • Dragunov SVD Sniper rifle • MPA .45 ACP submachine gun • M4 Tactical Shotgun • AR-15 custom carbine Assault Rifle When you completely build your weapon you can take screenshot and share it with friends or via social networks. Whatever you choose in build options will be saved on your device so you do not have to worry about saving. In the options you can choose how to shoot with your gun, select slow or normal motion, chose unlimited ammo or the normal number of bullets within magazine. It’s the same for vibrations, smoke effects and screen rotation. Download the best gun builder app for free now!

About

Idle Gun Assembly

Design, build, and upgrade unique weapons to destroy targets. Mix and match parts, paint your creations, and level up to unlock new components for maximum damage and in-game cash. Become the ultimate gunsmith in this idle simulation game.

Highlights
  • Design custom weapons
  • Mix and match gun parts
  • Paint weapon creations
  • Upgrade for maximum damage
  • Unlock new gun parts
  • Destroy insane targets
Features
Read full description

Design and use the most craziest and powerful weapons. Use it to blow up insane targets. Mix, Match and Paint to create your favorite gun. Upgrade and get maximum damage and cash. Unlock more gun parts as you Level Up. Experience the epic Gun idle game and Become the best Gun Smith!!

Screenshots

Gun Builder Simulator4 screens
Idle Gun Assembly4 screens

Verdict

The call

The clearest difference is review sentiment: Gun Builder Simulator at 68% against Idle Gun Assembly's 0%. Gun Builder Simulator also leads on rating (4.3 vs 2.3) and ratings volume (307 vs 4). Idle Gun Assembly's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price and device support 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. Gun Builder Simulator sells 1 one-off in-app purchase. Idle Gun Assembly asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Gun Builder Simulator holds the better App Store score, 4.3 against 2.3. That said, the two scores are not equally well evidenced: Gun Builder Simulator has 307 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 68% of Gun Builder Simulator's written reviews are positive against 0% of Idle Gun Assembly's.

UpkeepUpdate frequency

Gun Builder Simulator ships an update every 5 months, Idle Gun Assembly every 11 days. The most recent releases landed on October 6, 2026 and October 7, 2026 respectively.

Scorecard8 real differences · 2 level
Gun Builder Simulator versus Idle Gun Assembly: the parameters behind the verdict, then further details
ParameterGun Builder SimulatorIdle Gun Assembly
PriceFreeFree
Rating4.3 (307 ratings) — better2.3 (4 ratings)
Positive reviews67.6% of reviews — better0.0% of reviews
Number of ratings307 — better4
Update frequencyEvery 5 monthsEvery 11 days — better
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.010.0 — better
Further details — not scored
Size95 MB106 MB
Age rating17+9+
DeveloperMarijana PericStudd Technology Solutions

Customer experience

Gun Builder Simulator

All ratings307 ratings
Positive85.0%
Neutral3.9%
Negative11.1%
Written reviews34 reviews
Positive67.6%
Neutral8.8%
Negative23.5%

Idle Gun Assembly

All ratings4 ratings
Positive25.0%
Neutral0.0%
Negative75.0%
Written reviews2 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Gun Builder Simulator

One-time1
  • Premium Version$2.99
None

Idle Gun Assembly

No in-app purchases

Questions

Is Gun Builder Simulator free?
Gun Builder Simulator is free to download, with in-app purchases available.
Is Idle Gun Assembly free?
Idle Gun Assembly is free to download, with no in-app purchases.
Which has better reviews, Gun Builder Simulator or Idle Gun Assembly?
Gun Builder Simulator is rated higher. Gun Builder Simulator averages 4.3 out of 5 from 307 ratings, while Idle Gun Assembly averages 2.3 from 4 ratings.
Do Gun Builder Simulator or Idle Gun Assembly have ads?
Gun Builder Simulator shows ads; Idle Gun Assembly does not.
Which is updated more often, Gun Builder Simulator or Idle Gun Assembly?
Gun Builder Simulator ships an update every 5 months, and Idle Gun Assembly every 11 days. Most recently, Gun Builder Simulator was updated on October 6, 2026 and Idle Gun Assembly on October 7, 2026.

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