Comparison

Nuclear inc 2. Atom simulator vs Hello Tower

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

Head to head
About

Nuclear inc 2. Atom simulator

Simulate and control a nuclear power plant, managing complex systems to prevent disasters. Navigate through challenging levels, including historical events, and utilize improvements to optimize reactor operations. Experience a realistic and engaging simulation with a focus on risk and critical decision-making.

Highlights
  • Realistic nuclear reactor control system
  • Detailed training mode
  • Fukushima and Chernobyl locations
  • Unique gameplay mechanics
  • Emergency incident simulations
  • Multiple language support
Features
Read full description

It is common knowledge, that nuclear power plants are considered to be the most controversial source of energy, since nuclear reactors are very dangerous. Would you be able to control the atomic energy of the reactor? The main location of our simulator is a huge remote room where players can find hundreds of devices, screens and indicators. You, as the bravest superhero, will have to take on the role of the Chernobyl nuclear power plant operator and control all the processes in order to put the station into a safe operation mode. • This hardcore game consists of 12 levels. • Each level becomes available after completing the previous objectives. • At first, you will go through the training and learn how to manage a nuclear power plant. • You will have access to various improvements and bonuses that will help to optimize the control process of our nuclear reactor. We are 100% sure that you want some risk in your life, and therefore created the last two hardcore levels - Fukushima and Chernobyl. They are extremely difficult, but if you take a dosimeter with you and measure the external radiation background, then you may avoid the explosion of our power reactor! Only you can change the outcome of 1986 and save our planet from a technological disaster! Due to various special effects and unique gameplay, the game keeps you energized and brings a flurry of emotions from passing each level! Attention! Check the pressure and temperature in our nuclear reactor, and do not forget about the gas turbine. Carelessness may lead to a nuclear disaster! Game Features: - Contains detailed training; - Realistic nuclear reactor control system; - Fukushima and Chernobyl locations; - Unique gameplay; - Four different languages; - The presence of various emergency incidents, for example, earthquakes, fires and other disasters.

About

Hello Tower

Experience realistic airport ground control with this simulation app. Manage aircraft movements, issue clearances, and handle emergencies across over 40 diverse airports. Progress from simple single-runway operations to complex hub airports.

Highlights
  • Airport ground maneuvering simulation
  • Over 40 different airports
  • Simplified and real-size airport versions
  • Pushback, taxi, and take-off clearances
  • Emergency handling
  • Level-based progression
Features
Read full description

Airport ground maneuvering simulation of more than 40 different airports including  London Heathrow LHR, Philadelphia PHL, Miami Intl. MIA, Singapore, New York JFK, Las Vegas LAS, São Paulo GRU, Montreal YUL, Boston BOS, and many more.  Different versions of airports included: - Play the simplified version, where the airport is scaled down to an easy playable experience. - Play the real thing. Here the whole airport is in real size displayed, where all your skills are required. Features - Give pushback, taxi, holding and take-off clearances.  - Handle emergencies and try to release all flights on time in order to release the next level. From an easy single-runway operation at the beginning to demanding hub airports with multiple active runways where all your skills are required.

Screenshots

Nuclear inc 2. Atom simulator4 screens
Hello Tower4 screens

Verdict

The call

The clearest difference is rating: Hello Tower at 4.4 against Nuclear inc 2. Atom simulator's 3.8. Hello Tower also leads on update cadence (every 9 days vs every 26 months). Nuclear inc 2. Atom simulator's advantage is in-app purchases (none vs 5) and chart position (#137 vs unranked). On review sentiment, ratings volume, ads 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

Nuclear inc 2. Atom simulator costs $0.99 and Hello Tower $2.99 up front. Hello Tower sells 4 one-off in-app purchases. Nuclear inc 2. Atom simulator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Hello Tower holds the better App Store score, 4.4 against 3.8. Both are backed by a comparable volume of ratings — 158 and 66 respectively. Written reviews point the same way: 67% of Nuclear inc 2. Atom simulator's written reviews are positive against 71% of Hello Tower's.

UpkeepUpdate frequency

Nuclear inc 2. Atom simulator ships an update every 26 months, Hello Tower every 9 days. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

Scorecard7 real differences · 4 level
Nuclear inc 2. Atom simulator versus Hello Tower: the parameters behind the verdict, then further details
ParameterNuclear inc 2. Atom simulatorHello Tower
Price$0.99 — better$2.99
Rating3.8 (158 ratings)4.4 (66 ratings) — better
Positive reviews67.0% of reviews70.7% of reviews — better
Number of ratings158 — better66
Update frequencyEvery 26 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#137 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better18.0
Further details — not scored
Size88 MB412 MB
Age rating9+4+
DeveloperDmitry LomakinSascha Trachsel

Customer experience

Nuclear inc 2. Atom simulator

All ratings158 ratings
Positive69.0%
Neutral7.6%
Negative23.4%
Written reviews282 reviews
Positive67.0%
Neutral8.9%
Negative24.1%

Hello Tower

All ratings65 ratings
Positive86.2%
Neutral3.1%
Negative10.8%
Written reviews123 reviews
Positive70.7%
Neutral14.6%
Negative14.6%

User reviews

Nuclear inc 2. Atom simulator

From 158 App Store ratings

What we love

  • 💡 Unique nuclear reactor simulation concept
  • 🎮 Engaging and challenging gameplay mechanics
  • 💰 Affordable price point (under $1-2)
  • 📚 Educational value about nuclear power plants
  • 🎨 Minimalist and clean visual design

Room to improve

  • ⏱️ Severe difficulty spike at later levels
  • 🎲 Excessive randomness in disaster events
  • ⏰ Unrealistic time pressure and constraints
  • 💸 Insufficient starting money on higher levels
  • 🌍 Poor translation quality in multiple languages

Hello Tower

From 66 App Store ratings

What we love

  • 👍 Realistic simulation
  • 👍 Challenging gameplay
  • 👍 Good graphics
  • 👍 No ads
  • 👍 Addictive and fun

Room to improve

  • 🐛 Bugs and glitches
  • 🐛 Unintuitive UI
  • 🐛 Steep learning curve
  • 🐛 Frequent game over on small mistakes
  • 🐛 Lack of tutorial

Bugs and requests

Nuclear inc 2. Atom simulator

Reported bugs

9 issues
  • Level 2 core cooling stuck/unresponsive
  • Fuel rod recharge not working properly on level 5
  • Negative temperature exploit causing reactor malfunction
  • Upgrades not functioning correctly
  • Mobile touch controls not registering interactions
Show 4 more
  • Tutorial only accessible after destroying reactor in level 1
  • Inconsistent disaster frequency and timing
  • Game progression locked behind level completion
  • Excessive battery drain during gameplay

Requested features

15 requests
  • Sandbox/free play mode accessible earlier or unlocked after fewer levels
  • Additional levels and missions
  • More reactor types and customization options
  • Fusion reactor option
  • Submarine game mode (promised but never delivered)
Show 10 more
  • Multiplayer or competitive modes
  • Highscore tracking system
  • Different difficulty settings
  • Level skip option
  • More upgrade categories and items
  • Better tutorial and in-game explanations
  • Language localization (Korean, Japanese, Turkish, Italian, etc.)
  • Improved UI layout for iPad
  • Nuclear waste management mechanics
  • Facility building and expansion features

Hello Tower

Reported bugs

37 issues
  • Flight freezing on runway holding and turns
  • Aircraft getting stuck and blocking routes
  • 30-second departure timer disappearing
  • Aircraft crashing with held aircraft on taxiway
  • Levels not unlocking
Show 32 more
  • Game freezes/crashes, especially at Heathrow
  • Separation logic errors
  • Aircraft not selectable
  • Game hangs/freezes after updates
  • New UI is confusing and unreadable
  • Sounds missing after update
  • Focus on aircraft and readability worsened
  • Aircraft symbols obscured by labels
  • Tapping messages only selects aircraft once
  • Parking spots shown as available when occupied
  • Planes crossing paths and getting stuck
  • Aircraft becoming 'ghosts' blocking routes
  • Runway timer resets to zero before 30 seconds
  • Departure separation timer sometimes fails to appear
  • Recent updates have made the game fiddly and difficult
  • UI is worse after recent updates
  • Levels changed after recent updates
  • Game becomes unplayable after updates
  • Aircraft roll with extreme speed
  • UI for iPhones is terrible
  • Previous version was better
  • Custom game mode is buggy
  • Some airport orientations are off
  • Ground radars not oriented to true north
  • Cannot make aircraft move
  • Cannot park landed aircraft
  • Game ends with blocked runway when it's not
  • Impossible timings leading to penalties
  • Aircraft launching in both directions on the same runway simultaneously
  • Departure slot timer bug
  • Aircraft on final approach not being able to be directed away
  • Aircraft on runway preventing others from crossing

Requested features

23 requests
  • Add more airports (US, European, Asian, Indian cities)
  • Add an endless/sandbox mode
  • Add AI voice recognition and ATC dialogues
  • Implement a tutorial or walk-through
  • Add a 'continue game' or save progress option
Show 18 more
  • Add more realistic separation rules and traffic patterns
  • Improve UI and controls (smaller buttons, better organization)
  • Add option to designate departure/arrival runways
  • Add rejected takeoffs, emergency vehicles, emergency inbounds
  • Add ability to call a go-around
  • Allow custom stop points
  • Add more sounds for aircraft
  • Add a smaller tutorial airport
  • Add day/night environment switching
  • Add towing/pushback option for stuck aircraft
  • Add Chinese language support
  • Add more content/levels, possibly a sequel
  • Improve graphics and aircraft dynamics
  • Add music and better menu
  • Add indication when flights actually depart
  • Add beacon lights to taxiway hotspots
  • Add more realistic taxi speeds and turnaround times
  • Add runway vacation instructions

In-app purchases

None

Nuclear inc 2. Atom simulator

No in-app purchases

4 purchases

Hello Tower

One-time4
  • Hello Tower Test$0.99
  • Airport Pack$0.99
  • Sandbox test2 variants$0.99
Show 1 more
  • Airport Pack$1.99

Questions

Is Nuclear inc 2. Atom simulator free?
Nuclear inc 2. Atom simulator costs $0.99, with no in-app purchases.
Is Hello Tower free?
Hello Tower costs $2.99, and also offers in-app purchases.
Which has better reviews, Nuclear inc 2. Atom simulator or Hello Tower?
Hello Tower is rated higher. Nuclear inc 2. Atom simulator averages 3.8 out of 5 from 158 ratings, while Hello Tower averages 4.4 from 66 ratings.
Do Nuclear inc 2. Atom simulator or Hello Tower have ads?
Neither Nuclear inc 2. Atom simulator nor Hello Tower shows ads.
Which is updated more often, Nuclear inc 2. Atom simulator or Hello Tower?
Nuclear inc 2. Atom simulator ships an update every 26 months, and Hello Tower every 9 days. Most recently, Nuclear inc 2. Atom simulator was updated on November 6, 2026 and Hello Tower on November 7, 2026.

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