Spark vs Upload Simulator 2
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Spark
Guide the evolution of the cosmos as an ethereal Spark of Life. Assimilate raw materials and influence cosmic development through incremental gameplay. Unlock resources, progress through story elements, and utilize a prestige mechanic for faster advancement.
- Multiple unlockable and upgradeable resources
- Story elements that unfold with progress
- Prestige mechanic for accelerated progression
- Altar of Knowledge for powerful upgrades
- Intuitive UI with organic learning
- Optional ads for in-game bonuses
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Spark is an idle incremental game in which you take on the role of an ethereal Spark of Life that bursts into existence. Assimilate the raw material that exists around you and use your influence to guide the evolution of the Cosmos. Click on the Matter button to begin amassing your influence. When you feel ready, swipe left and begin evolving. Features: - Multiple resources that can be unlocked, purchased, and upgraded - Story elements that appear as player progresses - Prestige mechanic that allows player to start from beginning; progressing faster than before - New "Altar of Knowledge" Mechanic that allows players to spend points gained from the prestige mechanic for new sets of powerful upgrades - Simple, intuitive UI that teaches the game organically as the player progresses - Advertisements are completely optional, and can be watched for an in-game bonus
Upload Simulator 2
Simulate the process of uploading data to earn credits, upgrade your hardware, and research new technologies. Discover unique artifacts, craft modules, and customize your operating system with themes and wallpapers.
- GPU mining for credits
- Upgrade hardware setup
- Research new technologies
- Craft modules
- Customize OS with themes
- Discover unique artifacts
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Use your powerful GPU to mine credits and upgrade your setup even further! Get unique upgrades using your hard-gained reputation as an uploader! Use your uploaded data into the laboratory to research amazing new tech and boost your setup even more! Hack into the system and speed up your game with different abilities! Choose the format of your uploads for different outcomes! Find unique artifacts that grant you with different bonus effects! Collect resources to craft modules and modify your system! And customize your OS with different themes or even with the wallpaper of your choice!
Screenshots
Verdict
The clearest difference is price: Spark at Free against Upload Simulator 2's $3.99. Spark also leads on rating (4.8 vs 4.4) and review sentiment (94% vs 80%). Upload Simulator 2's advantage is update cadence (every 2 days vs every 3 weeks). On 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
Spark is free to download; Upload Simulator 2 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Spark holds the better App Store score, 4.8 against 4.4. That said, the two scores are not equally well evidenced: Spark has 233 ratings behind it against 18, so its average is the more settled of the two. Written reviews point the same way: 94% of Spark's written reviews are positive against 80% of Upload Simulator 2's.
Spark ships an update every 3 weeks, Upload Simulator 2 every 2 days. The most recent releases landed on October 5, 2026 and October 1, 2026 respectively.
| Parameter | Spark | Upload Simulator 2 |
|---|---|---|
| Price | Free — better | $3.99 |
| Rating | 4.8 (233 ratings) — better | 4.4 (18 ratings) |
| Positive reviews | 94.3% of reviews — better | 80.0% of reviews |
| Number of ratings | 233 — better | 18 |
| Update frequency | Every 3 weeks | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 75 MB | 125 MB |
| Age rating | 4+ | 4+ |
| Developer | Deuski Games Limited Liability Company | EnigmaDev Studios |
Customer experience
Spark
Upload Simulator 2
Bugs and requests
Spark
Reported bugs
2 issues- Ad not loading
- Game broke (production NaN, destruction bonus INF)
Requested features
7 requests- More updates
- Continue the story
- Add more evolution upgrades
- Add something at the end (e.g., restart with multiplier)
- Pay to have 2X multiplier forever
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- Add Altar of Knowledge (if not unlocked)
- More content
Upload Simulator 2
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Spark
No in-app purchases
Upload Simulator 2
No in-app purchases
Questions
Is Spark free?
Is Upload Simulator 2 free?
Which has better reviews, Spark or Upload Simulator 2?
Do Spark or Upload Simulator 2 have ads?
Which is updated more often, Spark or Upload Simulator 2?
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