# Battery Merge vs Idle Light Bulb

The clearest difference is in-app purchases: Battery Merge at none against Idle Light Bulb's 8. Battery Merge also leads on update cadence (every 4 days vs every 3 months) and iOS requirement (11.0 vs 15.0). On price, ads and device support there is nothing between them.

Both are free to download. Idle Light Bulb sells 8 one-off in-app purchases. Battery Merge asks for nothing beyond the download.

Battery Merge ships an update every 4 days, Idle Light Bulb every 3 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Battery Merge | Idle Light Bulb |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (3.3K ratings)](https://appshunter.io/ios/app/idle-light-bulb/id6449452892/reviews)** |
| Number of ratings | — | **3.3K** |
| Positive reviews | — | 81.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 4 days** | Every 3 months |
| Monetization | — | Free with in-app purchases |
| Size | 128 MB | 221 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Taninty Game Studio](https://appshunter.io/developer/983585874) | [Solid Games](https://appshunter.io/developer/1625798412) |

## What reviewers say

### Battery Merge

[App page](https://appshunter.io/ios/app/battery-merge/id6443937892)

**Features:** macOS Compatibility

**In-app purchases:** none


### Idle Light Bulb

[App page](https://appshunter.io/ios/app/idle-light-bulb/id6449452892)

Build and manage a light bulb production empire. Start with a single line, upgrade efficiency, and expand your operations. Hire managers to automate and grow your business into the world's largest.

**Highlights:** Produce light bulbs, Upgrade production lines, Transport and sell bulbs, Hire administrators, Expand company operations, Become a bulbs tycoon

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Diamond Pack 1 | $1.99 | one-time |
| No Ads Lite | $3.99 | one-time |
| Diamond Pack 2 | $4.99 | one-time |
| Diamond Pack 3 | $9.99 | one-time |
| No Ads Plus | $9.99 | one-time |
| Diamond Pack 4 | $19.99 | one-time |
| Diamond Pack 5 | $49.99 | one-time |
| Diamond Pack 6 | $99.99 | one-time |

**What reviewers like**

- 👍 Fun and addictive game
- 💡 Unique concept with light bulbs
- 🚀 Fast progression for new players
- 🤩 Enjoyable gameplay experience

**What reviewers complain about**

- 🤬 Excessive ads and pop-ups
- 🐛 Offline earnings not always credited
- 💰 Expensive in-app purchases
- 🔋 High battery consumption

**Reported bugs**

- Inability to scroll up and purchase new lines
- Bulb upgrades not allowing players to sell
- Inconsistent performance and crashes

**Requested features**

- Improve offline earnings tracking
- Reduce frequency of ads
- Add more levels and content
- Implement save/restore progress feature


## Frequently asked questions

### Is Battery Merge free?

Battery Merge is free to download, with no in-app purchases.

### Is Idle Light Bulb free?

Idle Light Bulb is free to download, with in-app purchases available.

### Do Battery Merge or Idle Light Bulb have ads?

Both Battery Merge and Idle Light Bulb show ads.

### Which is updated more often, Battery Merge or Idle Light Bulb?

Battery Merge ships an update every 4 days, and Idle Light Bulb every 3 months. Most recently, Battery Merge was updated on November 3, 2026 and Idle Light Bulb on November 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*