Comparison

SmartRecorder vs USB Camera to NDI

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

SmartRecorder

Record, edit, and manage audio and video files with advanced features like real-time monitoring, sound effect processing, and a teleprompter. Supports background operation and multi-language switching for a seamless user experience.

Highlights
  • Real-time audio monitoring
  • Sound effect processing (noise reduction, low cut)
  • Audio editing (fading, cropping, splitting)
  • High-definition 4K video recording
  • Teleprompter for video recording
  • Voice to text recognition
  • Background recording and playback
Features
Read full description

An app for recording, editing, playing and managing audio and video files! 【Recording by Apple device】 No external audio equipment is needed, use iPhone or iPad itself to record and play, and when the headphones are plugged in, you can record and listen while recording, and hear the external sound from the headphones. 【External audio devices recognition】When an external audio device is inserted, the name of the device can be intelligently recognized, and it can automatically display whether it supports stereo; If audio monitoring can display two-channel audio tracks, and the peripheral supports stereo output, otherwise the peripheral doesn't support stereo output. 【Select audio channel】After the peripheral device that supports stereo is connected, you can select left channel, right channel and stereo item to display left channel data, right channel data and dual track data respectively. 【Real-time monitoring】After this function is turned on, the input sound can be heard from the audio output port in real time, and when the peripheral supporting stereo is inserted into the iOS device, set the corresponding value (left, right, stereo) to hear different sounds sound effect. 【Audio and video file operation】Accurately query the files you need in multiple audio files; batch delete selected audio/video files; change the name of audio and video files; share recorded audio and video files... 【Audio input source selection】If there are multiple audio input sources, you can select the input port and use the selected port for recording 【Language switching】Support multi-language display, easy to understand language switching operation 【Add marker】When recording and playing the recording file, you can add a marker, which is convenient for you to operate the audio playback at a certain position or time period 【Background operation】 When the app enters the background, you can still continue to record and play the recording file 【Sound effect processing】You can enable noise reduction, low cut, vocal enhancement and other sound effects in the APP for audio and video recording, and set related parameters 【Audio Editing】 Editing operations such as fading, cropping, splitting, balancing, mixing, and mute elimination can be performed on the audio in the APP. 【Video recording】The APP can record high-definition 4K video, and has various settings for video shooting 【Teleprompter】Video recording can customize a variety of teleprompters 【Bluetooth audio】 APP can connect Bluetooth headset, collect Bluetooth data, and realize the ear return function of Bluetooth headset 【Dark Mode】Adapted to the latest dark mode, there are more choices according to the user's personality 【Recycle Bin】Audio and video files deleted in the APP can be retrieved from the Recycle Bin within a certain period of time 【Voice to text】 Real-time recognition of voice to text when recording audio and video

About

USB Camera to NDI

This app allows you to monitor and convert UVC cameras to NDI streams in real-time. It supports various NDI formats, offers simultaneous recording to Photos, and can extend camera capabilities using HDMI adapters.

Highlights
  • Monitor UVC cameras for free
  • Switch between multiple UVC cameras
  • Real-time NDI conversion
  • Supports FULL NDI, NDI HX H.264, NDI HX HEVC
  • Record to Photos simultaneously
  • NDI tally status indicator
Features
Read full description

- Monitoring any UVC camera for free - Switch in multiple UVC cameras - Audio UV meters included - Record to Photos simultaneously - Converts UVC camera to NDI in real-time, supports FULL NDI, NDI HX H.264, NDI HX HEVC - NDI tally status indicator - Use HDMI -> USB adapter to extend more traditional cameras, no longer need an expensive HDMI-NDI converter any more - Use a USB-C adapter with HDMI output for external full-screen monitoring - Use Apple TV, Google TV Stick or Amazon Fire TV Stick for wireless AirPlay monitoring

Screenshots

SmartRecorder4 screens
USB Camera to NDI1 screens

Verdict

The call

The clearest difference is rating: USB Camera to NDI at 3.9 against SmartRecorder's 3.2. USB Camera to NDI also leads on ratings volume (102 vs 10). SmartRecorder's advantage is in-app purchases (none vs 4) and review sentiment (43% vs 25%). On price, update cadence, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. USB Camera to NDI sells 4 one-off in-app purchases. SmartRecorder asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

USB Camera to NDI holds the better App Store score, 3.9 against 3.2. That said, the two scores are not equally well evidenced: USB Camera to NDI has 102 ratings behind it against 10, so its average is the more settled of the two. Written reviews complicate that: 43% of SmartRecorder's written reviews are positive against 25% of USB Camera to NDI's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

SmartRecorder ships an update every 6 weeks, USB Camera to NDI every 5 weeks. The most recent releases landed on October 22, 2026 and October 23, 2026 respectively.

Scorecard6 real differences · 4 level
SmartRecorder versus USB Camera to NDI: the parameters behind the verdict, then further details
ParameterSmartRecorderUSB Camera to NDI
PriceFreeFree
Rating3.2 (10 ratings)3.9 (102 ratings) — better
Positive reviews42.9% of reviews — better25.0% of reviews
Number of ratings10102 — better
Update frequencyEvery 6 weeksEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS9.0 — better17.6
Further details — not scored
Size62 MB41 MB
Age rating4+4+
DeveloperShenzhen DSQN Investment Co., Ltd.TopDirector Corporation

Customer experience

SmartRecorder

All ratings10 ratings
Positive50.0%
Neutral10.0%
Negative40.0%
Written reviews7 reviews
Positive42.9%
Neutral28.6%
Negative28.6%

USB Camera to NDI

All ratings102 ratings
Positive70.6%
Neutral3.9%
Negative25.5%
Written reviews8 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

In-app purchases

None

SmartRecorder

No in-app purchases

4 purchases

USB Camera to NDI

One-time4
  • Remove Ads$0.99
  • Enable NDI Sending$4.99
  • Enable Recording and Snapshot$9.99
Show 1 more
  • HDMI, ScreenMirroring, AirPlay$9.99

Questions

Is SmartRecorder free?
SmartRecorder is free to download, with no in-app purchases.
Is USB Camera to NDI free?
USB Camera to NDI is free to download, with in-app purchases available.
Which has better reviews, SmartRecorder or USB Camera to NDI?
USB Camera to NDI is rated higher. SmartRecorder averages 3.2 out of 5 from 10 ratings, while USB Camera to NDI averages 3.9 from 102 ratings.
Do SmartRecorder or USB Camera to NDI have ads?
Neither SmartRecorder nor USB Camera to NDI shows ads.
Which is updated more often, SmartRecorder or USB Camera to NDI?
SmartRecorder ships an update every 6 weeks, and USB Camera to NDI every 5 weeks. Most recently, SmartRecorder was updated on October 22, 2026 and USB Camera to NDI on October 23, 2026.

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