# Trigger Keeper vs Parallel

The clearest difference is price: Parallel at Free against Trigger Keeper's $4.99. Parallel also leads on update cadence (every 2 days vs every 2 weeks). Trigger Keeper's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Parallel is free to download; Trigger Keeper costs $4.99 up front. Parallel sells 3 in-app purchases, starting at $1.99 per month. Trigger Keeper asks for nothing beyond the download.

Trigger Keeper ships an update every 2 weeks, Parallel every 2 days. The most recent releases landed on November 7, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Trigger Keeper | Parallel |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 3 MB | 17 MB |
| Requires iOS | **17.2** | 18.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Brian Ukestad](https://appshunter.io/developer/1870321026) | [Hoa Bui Duy](https://appshunter.io/developer/1876473734) |

## What reviewers say

### Trigger Keeper

[App page](https://appshunter.io/ios/app/trigger-keeper-voice-camera/id6774868117)

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

**In-app purchases:** none


### Parallel

[App page](https://appshunter.io/ios/app/parallel-dual-video-camera/id6813023284)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Parallel Pro Monthly | $1.99 | per month |
| Parallel Pro Yearly | $9.99 | per year |
| Parallel Pro Lifetime | $29.99 | one-time |


## Frequently asked questions

### Is Trigger Keeper free?

Trigger Keeper costs $4.99, with no in-app purchases.

### Is Parallel free?

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

### Do Trigger Keeper or Parallel have ads?

Neither Trigger Keeper nor Parallel shows ads.

### Which is updated more often, Trigger Keeper or Parallel?

Trigger Keeper ships an update every 2 weeks, and Parallel every 2 days. Most recently, Trigger Keeper was updated on November 7, 2026 and Parallel on November 6, 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.*