Independent iPhone apps
Small apps.Sharp edges.
Focused iPhone apps for capture, study and everyday checks — and more on the way. Built and maintained by one developer.
- iPhone
- iPad
- Mac
- Vision Pro
Pick your tool.
Featured
- iPhone
- iPad
- Mac
- Vision Pro
- Photo & Video
MixCam: Dual Video Recorder
Record front & back at once
- Record front and back cameras at the same time.
- Picture-in-picture, side-by-side or stacked layouts.
- Start recording from Control Center or the Lock Screen.
Free · In-app purchases
- iPhone
- iPad
- Mac
- Vision Pro
- Education
CertAnchor for AWS Exams
Cited practice questions
- Original practice questions with cited explanations.
- Timed mocks and a readiness signal — no pass guarantees.
- Challenge an answer and follow the correction trail.
Free · In-app purchases
- iPhone
- Mac
- Vision Pro
- Education
Capword: AI Language Learning
Snap Photos - Learn Vocabulary
- Snap a photo and learn the words in it.
- Smart spaced repetition so words stick.
- Daily practice with progress tracking.
Free · In-app purchases
- iPhone
- iPad
- Mac
- Vision Pro
- Productivity
AI Meeting Notes & Recorder
Voice to Text & Transcription
- Record meetings and lectures, get summaries and action items.
- Import audio, PDFs, photos, web and YouTube links.
- Study with quizzes, flashcards and mind maps.
Free · In-app purchases
- iPhone
- iPad
- Mac
- Vision Pro
- Utilities
Tube Summary - AI Assistant
Summarize & Learn from Videos
- Transcripts of YouTube videos in seconds.
- Concise summaries of long videos.
- Quizzes and flashcards from any video.
Free · In-app purchases
- iPhone
- iPad
- Mac
- Vision Pro
- Utilities
AI Speech & Translation Text
AI Scanner, Translator & Voice
- Scan documents and pull out the text.
- Translate text into 100+ languages.
- Turn text into speech and speech into text.
Free · In-app purchases
- iPhone
- iPad
- Vision Pro
- Productivity
Safe QR Code & Barcode Scanner
Food & Allergen Info, QR Maker
- Every link gets an on-device safety check before you open it.
- Check food for the 14 major EU allergens, plus recalls.
- Make styled QR codes with your own logo.
Free · In-app purchases
MixCamRecord front & back at onceYour view and your reaction, in one take.
Download on theApp Store — MixCam (opens in a new tab)Free · In-app purchases
Proof, not promises.
- 1developer behind every appDeveloper page (opens in a new tab)
- 0accounts needed to study in CertAnchorAbout CertAnchor
- On-devicelink checks in Safe QRAbout Safe QR
- Publiccorrections in CertAnchorHow corrections work
Maker note
Black Knight Studio is one developer making small, focused apps. Every app here is built, shipped and supported by the same person.