# DecibelLab vs Flagfall

The clearest difference is in-app purchases: Flagfall at none against DecibelLab's 2. Flagfall also leads on device support (3 vs 1) and iOS requirement (15.0 vs 18.0). DecibelLab's advantage is update cadence (every 2 days vs every 3 weeks). On price and ads there is nothing between them.

Both are free to download. DecibelLab sells 2 in-app purchases, starting at $14.99 per year. Flagfall asks for nothing beyond the download.

DecibelLab ships an update every 2 days, Flagfall every 3 weeks. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | DecibelLab | Flagfall |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Size | 15 MB | 11 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [永芳 徐](https://appshunter.io/developer/1887200583) | [L&L FRANCE](https://appshunter.io/developer/6784829272) |

## What reviewers say

### DecibelLab

[App page](https://appshunter.io/ios/app/decibellab-sound-level-meter/id6761004946)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Annual | $14.99 | per year |
| PRO 终身版 | $19.99 | one-time |


### Flagfall

[App page](https://appshunter.io/ios/app/flagfall-chess-clock/id6802061923)

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

**In-app purchases:** none


## Frequently asked questions

### Is DecibelLab free?

DecibelLab is free to download, with in-app purchases available.

### Is Flagfall free?

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

### Do DecibelLab or Flagfall have ads?

Neither DecibelLab nor Flagfall shows ads.

### Which is updated more often, DecibelLab or Flagfall?

DecibelLab ships an update every 2 days, and Flagfall every 3 weeks. Most recently, DecibelLab was updated on November 5, 2026 and Flagfall on November 10, 2026.

---

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