ViewBack vs LTC
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ViewBack
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This application allows a user to configure and monitor RF levels of a Vislink ViewBack receiver. The application communicates with the device via Bluetooth™. Operating in the 2GHz licenced band, the receiver supports Vislink proprietary robust LMS-T demodulation in addition to low latency H.264 decoding. Outputs include HDMI and HDSDI, the latter being switchable, in wireless camera applications, between the local camera video and the return received video. A lens interface is provided to utilise the ‘return’ button of the camera lens for switching the HDSDI output. On switching, picture interruption is avoided by use of local ‘frame lock’ information extracted from the camera source. The Vislink ViewBack is supplied with flexible quarter-wave antennas, and various mounting options for camera and Steadicam rigs.
LTC
Generate SMPTE linear time code for video and film frame labeling. The audio output is for controlling playback on other devices, not for listening. Run in the background with screen locked and output audio via headphone jack, AirPlay, or Bluetooth.
- Generate SMPTE linear time code
- Audio output for playback control
- Background operation with screen locked
- Multiple audio output options
- Selectable frame rates
- Customizable start and end times (full version)
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This app can generate SMPTE linear time code for testing. SMPTE timecode is a set of cooperating standards to label individual frames of video or film with a timecode. The audio output generated from this app is not for human listening, it is for controlling a video playback on another device. You can run the app in the background when your device's screen is locked. You can output the audio though the headphone jack, airplay or bluetooth. In the full version, you are able to: - Select different frame rate: 23.976, 24, 25, 29.97, 30 - Set the starting time. - Set the ending time to automatically stop or alternatively continue playing until you press stop. In the free version: - Select different frame rate: 23.976, 24, 25, 29.97, 30 - Timecode starts from the current device time. - Automatically stops generating and playing at midnight or press stop manually.
Screenshots
Verdict
The clearest difference is in-app purchases: ViewBack at none against LTC's 1. ViewBack also leads on iOS requirement (11.0 vs 16). LTC's advantage is update cadence (every 5 months vs every 21 months). On price, ads 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
Both are free to download. LTC sells 1 one-off in-app purchase. ViewBack asks for nothing beyond the download.
ViewBack ships an update every 21 months, LTC every 5 months. The most recent releases landed on October 1, 2026 and October 6, 2026 respectively.
| Parameter | ViewBack | LTC |
|---|---|---|
| Price | Free | Free |
| Rating | — | 1.7 (6 ratings) — better |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | — | 6 — better |
| Update frequency | Every 21 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 16 |
| Further details — not scored | ||
| Size | 12 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Vislink | Zhuoyao lu |
In-app purchases
ViewBack
No in-app purchases
LTC
- Full version$5.99








