Trigger Keeper vs Parallel
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Trigger Keeper
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Prop your phone anywhere, step into the frame or keep your hands on the job, and say the word. Trigger Keeper hears it and takes the photo. No timer sprint, no asking strangers, no one missing from the picture. HOW IT WORKS Pick your trigger word. Any word you like, from "cheese" to something only your family says. Frame the shot and tap Play. Trigger Keeper starts listening. Say the word. The flashlight blinks so everyone knows it heard you, and the shutter fires. Or just smile. With Smile to shoot on, it takes the photo when everyone in frame is smiling. MADE FOR REAL PHOTOS Your word, not a wake phrase. No "Hey Siri" required. Burst mode takes three shots in a row, so blinks and mid-laugh frames don't cost you the photo. Live Photo support captures the moment around the moment. 0.5x ultra-wide to 6x zoom, with pinch or one-tap lens presets. 4:3, square, and 16:9 framing. The volume buttons and Camera Control work as a manual shutter. PRIVATE AND LOCAL Speech recognition and smile detection run entirely on your iPhone. Trigger Keeper contains no networking code at all. It cannot send your audio, your photos, or anything else anywhere. No account. No ads. No analytics. It works in airplane mode, because nothing it does ever needed the internet. Listening stops when you tap Stop, when you leave the app, or after 10 quiet minutes. A note on permissions: Trigger Keeper asks for full photo library access only because creating and managing its own album requires it. The gallery shows only the Trigger Keeper album. Your other photos are never read. GOOD FOR Family gatherings and holiday photos. Group shots where the photographer finally gets to be in them. Solo creators who need a camera operator. Anyone tired of the 10-second timer dash. Hands-busy moments: under a sink, up a ladder, or mid-repair, when you need a clear photo of a part to send to a colleague or customer. Requires iOS 17.2 or later. Ultra-wide and telephoto options appear on devices that have those lenses.
Parallel
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Capture the moment and your reaction. Or record once and get both portrait and landscape videos. Parallel gives you two ways to tell the whole story. RECORD ONCE. SAVE BOTH FORMATS. Dual mode uses your front or rear camera to record portrait (9:16) and landscape (16:9) videos simultaneously. Get separate files ready for vertical posts and widescreen sharing, with no need to record the moment again. TWO CAMERAS. ONE STORY. Record with the front and rear cameras together in a single video. Choose Picture in Picture, Split Screen, or Top and Bottom, then select portrait or landscape output. Capture what you see alongside your reaction, commentary, or demonstration. MAKE THE FRAME YOURS Move and resize the floating camera, choose a square or portrait shape, and swap which camera takes the main view. Remove the front-camera background to place yourself over the scene, with processing handled directly on your device. PREVIEW. SAVE. SHARE. Browse your recordings in the gallery, play them back, and save your favorites to Photos. Share either format individually or both videos together. PRIVATE BY DESIGN Your recordings stay on your device until you choose to save or share them. No account required. Available in English and Vietnamese. Simultaneous front and rear camera recording requires a compatible device. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://buddyapp.net/apps/parallel/privacy
Screenshots
Verdict
The clearest difference is price: Parallel at Free against Trigger Keeper's $4.99. Trigger Keeper's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
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.
| Parameter | Trigger Keeper | Parallel |
|---|---|---|
| Price | $4.99 | Free โ better |
| Update frequency | โ | Every 2 days |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone | iPhone, iPad โ better |
| Requires iOS | 17.2 โ better | 18.0 |
| Further details โ not scored | ||
| Size | 2 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | Brian Ukestad | Hoa Bui Duy |
In-app purchases
Trigger Keeper
No in-app purchases
Parallel
- Parallel Pro Monthly$1.991 Month
- Parallel Pro Yearly$9.991 Year
- Parallel Pro Lifetime$29.99





