Comparison

Idle Energy Empire vs Gravity

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

Head to head
About

Idle Energy Empire

Build and manage an energy empire in a post-apocalyptic wasteland. Harvest resources, produce batteries, upgrade machines, and defend your factory from zombie hordes. Expand your operations and connect the grid to survive and thrive.

Highlights
  • Resource management
  • Machine upgrades
  • Battery production
  • Electric train logistics
  • Grid connection gameplay
  • Zombie defense
  • Factory expansion
Features
Read full description

Power Up Your Factory and Survive the Wasteland! Welcome to Idle Electricity Outpost – an electrifying idle simulation game where you build and manage your energy empire in a post-apocalyptic wasteland! Generate electricity, produce powerful batteries, and defend your factory from relentless zombie hordes. Are you ready to light up the future? Manage Your Resources Start by harvesting essential minerals, creating glass cases, and forging metal components. Combine these resources to produce high-tech batteries and sell them for profit. Use your earnings to expand and optimize your factory! Upgrade Your Machines Boost your production capabilities by upgrading key machines: Furnace: Refine raw minerals into usable materials. Assembly Unit: Build battery components with precision. Charging Station: Power up and prepare your batteries for sale. Efficient Logistics Run an electric train to deliver minerals to your factory while your hard-working bots and skilled workers keep everything running smoothly. Every process counts towards creating an efficient energy empire. Connect the Grid Take charge of the power lines! Strategically connect electricity across your factory to keep the machines running and the lights on. This unique gameplay feature sets you apart from other tycoons. Defend Against Zombies Survive the post-apocalyptic wasteland by defending your factory from zombies! Tap to eliminate threats and keep your workers safe. Can you protect your outpost while growing your energy empire? Expand Your Outpost Use your profits to expand your operations, discover new technologies, and create the ultimate electricity hub. Turn your wasteland factory into a beacon of light for the future! Idle Electricity Outpost offers addictive idle gameplay, engaging strategy, and an exciting mix of survival and simulation. Download now and start building your energy empire today!

About

Gravity

Read full description

Gravity Lander is a lunar arcade landing game where precision, timing, and fuel control decide whether you survive the mission. Pilot your lander through dangerous lunar terrain, collect cargo, avoid obstacles, and touch down safely on the landing pad. Every movement matters: use your thrust carefully, watch your fuel, and keep control as gravity pulls you toward the surface. Play through campaign missions, improve your landing skills, and race against the clock in Time Trial mode. Simple controls make it easy to start, but perfect landings take practice. Features: • Physics-based lunar landing gameplay • Campaign missions with increasing challenge • Time Trial mode for fast runs • Cargo collection objectives • Fuel management and careful flying • Clean arcade-style space visuals • Quick levels made for mobile play Can you recover the cargo and land without a scratch?

Screenshots

Idle Energy Empire4 screens
Gravity3 screens

Verdict

The call

The clearest difference is ads: Gravity at none against Idle Energy Empire's shown. Idle Energy Empire's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence, in-app purchases 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. Idle Energy Empire sells 13 one-off in-app purchases and Gravity sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Idle Energy Empire ships an update every 3 days, Gravity daily. The most recent releases landed on September 19, 2026 and September 15, 2026 respectively.

Scorecard2 real differences · 8 level
Idle Energy Empire versus Gravity: the parameters behind the verdict, then further details
ParameterIdle Energy EmpireGravity
PriceFreeFree
Rating4.4 (143 ratings) — better
Positive reviews40.8% of reviews
Number of ratings143 — better
Update frequencyEvery 3 daysDaily — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 — better15.1
Further details — not scored
Size273 MB66 MB
Age rating12+4+
DeveloperSOZAPIVF Parentium

Bugs and requests

Idle Energy Empire

Reported bugs

3 issues
  • Button to upgrade factory not working
  • Stuck at loading screen
  • Unable to progress past first factory

Requested features

3 requests
  • Add more factories (4, 5, 6)
  • Paid version to remove ads
  • Ability to scroll or resize tasks

Gravity

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Idle Energy Empire

One-time13
  • Starter Pack$0.99
  • Few gems$1.99
  • Gem Pack Offer$1.99
Show 10 more
  • Starter Pack$2.99
  • Factory 2 Offer$4.99
  • Factory 3 Offer$4.99
  • Gems pack 2$4.99
  • Starter Pack$4.99
  • Factory 2 Offer$6.99
  • Factory 3 Offer$6.99
  • Gem pack 3$9.99
  • Gem pack 5$19.99
  • Gem pack 5$49.99
3 purchases

Gravity

One-time3
  • 4 Cores + 300 Credits$0.99
  • 9 Cores + 800 Credits$4.99
  • 16 Cores + 1,400 Credits$9.99

Questions

Is Idle Energy Empire free?
Idle Energy Empire is free to download, with in-app purchases available.
Is Gravity free?
Gravity is free to download, with in-app purchases available.
Do Idle Energy Empire or Gravity have ads?
Idle Energy Empire shows ads; Gravity does not.
Which is updated more often, Idle Energy Empire or Gravity?
Idle Energy Empire ships an update every 3 days, and Gravity daily. Most recently, Idle Energy Empire was updated on September 19, 2026 and Gravity on September 15, 2026.

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