Bullet Fusion vs Trigger Up
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Bullet Fusion
Collect and merge bullets to enhance your firepower and engage in intense combat. Maneuver strategically to maximize your attack capabilities and defeat numerous enemies with a gatling-style weapon.
- Collect and merge bullets
- Increase firepower
- Strategic maneuvering
- Gatling-style weapon combat
- Fight multiple enemies
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Become a master planner, collect and merge bullets to increase your firepower ! Maneuver to increase your firepower even more. Fight many enemies by using your fantastic gatling-style weapon.
Trigger Up
Experience an action-packed run-and-gun adventure where your weapon evolves as you play. Dash through levels, collect upgrades, and blast enemies to unlock powerful new firepower. The longer and better you run, the stronger your weapon becomes.
- Evolving weapon system
- Run-and-gun gameplay
- Collect upgrades
- Blast enemies and obstacles
- Action-packed levels
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The ultimate run-and-gun experience where your weapon evolves with every step! Dash through action-packed levels, collect upgrades, and blast your way through enemies and obstacles. The better you run, the stronger your weapon becomes! Run, shoot and evolve your gun to unlock unstoppable firepower!
Screenshots
Verdict
The clearest difference is review sentiment: Bullet Fusion at 29% against Trigger Up's 3%. Bullet Fusion also leads on update cadence (every 4 days vs every 2 weeks). Trigger Up's advantage is rating (1.9 vs 1.6) and ratings volume (42 vs 5). On price, ads, in-app purchases and monetization model 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
Both are free to download. Bullet Fusion sells 1 one-off in-app purchase and Trigger Up sells 11 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Trigger Up holds the better App Store score, 1.9 against 1.6. That said, the two scores are not equally well evidenced: Trigger Up has 42 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 29% of Bullet Fusion's written reviews are positive against 3% of Trigger Up's, so the app with the better star average is not the one people write more warmly about.
Bullet Fusion ships an update every 4 days, Trigger Up every 2 weeks. The most recent releases landed on October 19, 2026 and October 22, 2026 respectively.
| Parameter | Bullet Fusion | Trigger Up |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (5 ratings) | 1.9 (42 ratings) — better |
| Positive reviews | 28.6% of reviews — better | 3.3% of reviews |
| Number of ratings | 5 | 42 — better |
| Update frequency | Every 4 days — better | Every 2 weeks |
| Ads | Yes | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 278 MB | 368 MB |
| Age rating | 9+ | 12+ |
| Developer | Yso Corp | Rollic Games |
Customer experience
Bullet Fusion
Trigger Up
Bugs and requests
Bullet Fusion
Not enough reviews yet to summarise bugs or requests.
Trigger Up
Reported bugs
23 issues- Game crashes on opening
- Game freezes and loses lives
- Game crashes on startup
- Game crashes on opening splash screens
- Game glitches and gets stuck on trigger up icon page
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- Game quits working, blank screen after splash
- Game shuts down after opening
- Game crashes immediately upon startup
- Game freezes at startup
- Game crashes on the screen
- Game stopped giving chapter rewards
- Game takes over on autopilot
- Game won't finish loading credits
- Game is frozen after an update
- Game is redundant
- Game closes out randomly
- Game shows doubles of cash, coins, gems and casings
- Level banner stays on screen
- Cannot upgrade ammo box
- Game glitches at world 3
- Game glitches at World 3 Chapter 3
- Max out on guns at level 2 on Mars Mission
- Global conflict seems impossible to beat
Requested features
3 requests- Add more worlds
- Fix bugs and glitches
- Remove energy system
In-app purchases
Bullet Fusion
- Remove Ads$2.99
Trigger Up
- Starter Bundle$0.99
- Small Energy Pack$1.99
- Special Offer - Offer 12 variants$1.99
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- Small Gem Pack$2.99
- Energy Bank$4.99
- World Bundle$4.99
- Medium Energy Pack$4.99
- No Ads$6.99
- Energy Bundle$8.99
- Battle Pass$9.99
- Large Energy Pack$14.99
