Sonar Islands vs Zero Hour Assault
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sonar Islands
Embark on an audio-driven multiplayer adventure across 14 unique islands. Build your empire, explore diverse environments from ancient temples to volcanic landscapes, and engage in various challenges. Full game access requires a subscription.
- Multiplayer online gameplay
- Audio-driven events
- Empire building
- Island exploration and development
- Diverse island themes
- Tutorial and story modes
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Sonar Islands is a MULTIPLAYER ONLINE game, where all relevant events happen in your ears. Build up your empire, explore and develop 14 different islands with this award winning GAME OF THE DAY 2021. Visit an ancient TEMPLE, the ancestors built, where snakes are biting. Take a trip to the JUNGLE, watch abandoned lions on your way Have a merry-go-round on the FUN FAIR and shoot all toys Feel the terraforming heat of the VOLCANO island Short-circuit their brain of the robots from Feer in the MACHINE HALL Get lost in the labyrinth of the PING Island Deal with wind and mosquitos high up on the TREETOP Face the invisible power o ELECTRO. Dance on a ViNYL Record and collect treasures hold by little creatures, Fear the zombies on the GRAVEYARD, Skate on a WINTER LAKE, Visit the monks in their MONASTERY, climb up to HIMALAYA Or decide between HEAVEN or HELL Happy vacation on the islands! Sonar Islands comes with a tutorial, a training island and a story island. To get full access to the game, Sonar Islands offers a monthly and a yearly subscription. When you purchase a subscription, payments will be charged to your App Store account at the confirmation of purchase and will automatically renew unless canceled within 24-hours before the end of the current period. For more information, see our Terms of Use (https://www.mentalhome.eu/terms-of-use/) and our Privacy Policy (https://www.mentalhome.eu/privacy-policy/).
Zero Hour Assault
An audio-only first-person shooter designed for blind and visually impaired players. Experience intense online combat, diverse game modes, and tactical gameplay entirely through sound. Features include a persistent open-world PvP map, base building, and an extensive arsenal of weapons and gadgets.
- Audio-only gameplay
- Diverse game modes (Battle Royale, Zombie Survival, Knife Fight)
- Persistent open-world PvP
- Base building and defense
- Tactical combat mechanics
- Extensive arsenal and gadgets
- Integrated voice chat
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IMPORTANT: THIS IS AN AUDIOGAME Zero Hour Assault is played entirely by sound and is designed for the blind and visually impaired community. Everything is spoken by the game's own voice or through VoiceOver, so you never need to look at the screen. It works with VoiceOver on or off; with VoiceOver on, your gestures go straight to the game. The screen shows menus and messages in large text, and during play the gestures that work at that moment as a map of the screen, your map, your hands and the last spoken message. Please put on headphones for the best experience. Dive into intense, non-stop combat in Zero Hour Assault, an online first-person shooter where strategy, skill and teamwork are the keys to survival, whether you hunt alone or with your team. Fight on your terms: drop into a battle royale where the safe zone keeps shrinking, plant or defuse the spike in Search and Destroy, survive zombie hordes with your team, or prove yourself in duels with only snipers, swords or your bare fists. Key Features: 22 Match Modes: Nine new modes (Battle Royale, Search and Destroy, Team Deathmatch, Kill Confirmed, Hardpoint, Gun Game, Infected, Blackout and Squad Rounds), where everyone gets the same equipment, plus thirteen classic modes such as Capture the Flag, Zombie Survival and Knife Fight. Bots can fill empty seats in most modes. Freedom Fight in Brackenford: Parachute into Brackenford, an open city where the fight never stops. Enter about 60 buildings, climb stairs to the roofs, shatter windows, loot chests, and race for airdrops, control points and helicopter extractions while red zones push you around the map. Build and Defend Your Base: Form a group with friends, get a walled base on the freedom fight map, store loot in its chests, and defend your turf from rival players. If all the bases of your group are destroyed, your group is gone forever! Deep Tactical Gameplay: Aim up and down, land headshots and leg shots, carry a weapon in each hand, fit a silencer, and use a weapon melee attack to disarm and down your foes. Walls stop every bullet. In freedom fight and several modes a fallen fighter is knocked down instead of killed, and friends or teammates can lift them back up before they bleed out. Extensive Arsenal & Gadgets: Rifles, shotguns, pistols, sniper rifles, knives, swords and explosives, plus motors and bikes. Become invisible with the Invisibility Shield, lay traps with TM62 mines, create cover with deployable Barricades, or track your enemies with the Spatial Amplifier. Fair Progression & Rewards: Earn zero tokens by playing and spend them in the store. Every character has the same health, speed and damage; your character is your voice and identity. Climb the rankings and the season pass, unlock titles and cosmetics, complete missions and daily events, and spend event points in the event store. Free to Play: Optional in-app purchases offer zero token packs, a paid account, character voices, cosmetics and other extras. A paid account adds comfort and cosmetics, never combat power. All purchases are made inside the app. Integrated Voice Chat: Coordinate with your team using positional audio to hear nearby allies, or use community voice chat to talk with your whole community across the game, regardless of distance. Your Language: Play in English, Arabic, Spanish, Portuguese or Turkish, with more languages translated by players. Chat has 27 language channels and can translate messages. Made for Touch: On iPhone and iPad you play with touch gestures, and "View touch screen gestures" in the main menu explains every one. iPhone and iPad use the mobile server, built for touch play. Windows players have a separate server on purpose, to keep the game fair for touch players; choose it with "choose server" in the main menu if you want to face them. The battlefield is calling. Gear up, pick your character, and prove your worth. Are you ready for Zero Hour Assault?
Screenshots
Verdict
The clearest difference is monetization model: Zero Hour Assault at free against Sonar Islands's subscription. Zero Hour Assault also leads on rating (4.0 vs 3.5) and review sentiment (86% vs 60%). Sonar Islands's advantage is ratings volume (83 vs 10) and iOS requirement (12.5 vs 16.0). On price, ads, 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
Both are free to download. Sonar Islands sells 5 in-app purchases, starting at $2.99 per month and Zero Hour Assault sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Zero Hour Assault holds the better App Store score, 4.0 against 3.5. That said, the two scores are not equally well evidenced: Sonar Islands has 83 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 60% of Sonar Islands's written reviews are positive against 86% of Zero Hour Assault's.
Sonar Islands ships an update every 2 months, Zero Hour Assault every 3 weeks. The most recent releases landed on October 22, 2026 and October 20, 2026 respectively.
| Parameter | Sonar Islands | Zero Hour Assault |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (83 ratings) | 4.0 (10 ratings) — better |
| Positive reviews | 60.1% of reviews | 85.7% of reviews — better |
| Number of ratings | 83 — better | 10 |
| Update frequency | Every 2 months | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Subscription | Free — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.5 — better | 16.0 |
| Further details — not scored | ||
| Size | 288 MB | 220 MB |
| Age rating | 12+ | 17+ |
| Developer | Hansjoerg Mikesch | NBM DIGITAL LTD |
Customer experience
Sonar Islands
Zero Hour Assault
Bugs and requests
Sonar Islands
Reported bugs
4 issues- Crashes and freezes on certain devices
- Compass and navigation issues with iOS 16
- Incorrect Morse code in tutorial
- Inconsistent audio cues
Requested features
5 requests- Additional free islands to explore
- Option to purchase game outright instead of subscription
- More varied event types and challenges
- Ability to customize islands
- Support for multiple languages
Zero Hour Assault
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Sonar Islands
- Full Access - monthly$2.991 Month
- Full Access - yearly$29.491 Year
- 100 Diamonds$0.99
- 500 Diamonds$3.99
- 1000 Diamonds$5.99
Zero Hour Assault
- backpacks level3$3.99
- KelTecP318$6.99
- platinum token pack$12.99
Show 7 moreShow fewer
- paid account 1 month$14.99
- hex$24.99
- supreme$24.99
- paid account 3 month$44.95
- lord$59.99
- paid account 6 month$89.90
- paid account 12 month$179.00
Questions
Is Sonar Islands free?
Is Zero Hour Assault free?
Which has better reviews, Sonar Islands or Zero Hour Assault?
Do Sonar Islands or Zero Hour Assault have ads?
Which is updated more often, Sonar Islands or Zero Hour Assault?
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