Comparison

OneScan vs CaptionStudio

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

Head to head
About

OneScan

Features
Read full description

OneScan is a fast, private document scanner for iPhone and iPad. Scan receipts, forms, paper notes, and multi-page documents with Apple's document camera, or import photos. New and existing scans are automatically recognized on your device, so you can search names and the words inside your documents. Name each scan, keep it in your local Recent list, reopen it later, and export PDF, JPEG, PNG, or compact PDFs when you are ready. OneScan is privacy-first: no account, no ads, no third-party tracking, and no document upload. Recent scans stay on this device until you delete them. Limited first-party product analytics is sent only after you choose to share it. It uses a random app-scoped identifier and never includes documents, images, recognized text, or file names. You can turn it off or reset the identifier in Settings. Scanning, automatic text recognition for in-app search, common export formats, and basic PDF compression are free. OneScan Pro is a one-time purchase that unlocks text copying, searchable PDFs, target-size compression, page tools, smart names, privacy masks, and Face ID library lock. Terms of Use: https://oneapps.studio/terms

About

CaptionStudio

This app transforms audio and video into editable, translatable, and exportable timed captions. It also offers features for meeting notes, live floating captions, and conversation translation, all processed and stored locally on your device for enhanced privacy.

Highlights
  • Audio and video caption generation
  • Caption translation and editing
  • Meeting note transcription and organization
  • Live floating captions for apps
  • On-device conversation translation
  • Multiple export formats (SRT, WebVTT, TXT, MP4)
Features
Read full description

Turn audio and video into editable, translatable, export-ready timed captions—and keep meetings and conversations on your device. CaptionStudio brings media captions, meeting notes, floating captions, and conversation translation into one app. No account is required. Media, recordings, captions, and saved translation history are processed and stored on device by default. AUDIO & VIDEO CAPTIONS • Import MOV, MP4, M4V, M4A, MP3, WAV, or AAC files, or choose a video from Photos • Generate timed captions with native speech recognition • Play, seek, correct, split, merge, and add captions on a visual timeline • Translate captions and edit original, translated, or bilingual text • Customize fonts, size, colors, outline, background, and position • Export SRT, WebVTT, or TXT, or burn captions into an MP4 video MEETING NOTES • Record audio while creating a transcript • Organize the transcript into an overview, key points, decisions, and action items • Replay the recording and edit every section • Export meeting notes with the transcript as Markdown FLOATING CAPTIONS • Use iOS system broadcasting to transcribe audio from supported apps • Follow live captions in Picture in Picture • Show original, translated, or bilingual captions • Customize window ratio, text size, lines, alignment, colors, and background • DRM, broadcast, and audio-source restrictions may prevent some content from being transcribed CONVERSATION TRANSLATION • Speak a phrase, translate it, and hear it aloud • Swap source and target languages • Keep conversation history on device and delete it at any time PRIVACY FIRST • No account, ads, or developer-operated cloud upload • No third-party analytics or advertising SDKs • iOS manages required language resources; some models may need to be downloaded before first use • Recognition, translation, and language availability depend on the device, system version, and available models New users receive a 7-day full-feature trial on first launch. After the trial, choose a one-year access purchase that does not auto-renew or a lifetime unlock. Purchases and refunds are handled by Apple. Speech recognition, translation, and generated notes can be affected by accents, noise, overlapping speakers, and system models. Review important content against the original recording or video.

Screenshots

OneScan4 screens
CaptionStudio4 screens

Verdict

The call

The clearest difference is iOS requirement: OneScan at 17.0 against CaptionStudio's 26.0. On price, ads, in-app purchases 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. OneScan sells 1 one-off in-app purchase and CaptionStudio sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference · 9 level
OneScan versus CaptionStudio: the parameters behind the verdict, then further details
ParameterOneScanCaptionStudio
PriceFreeFree
Rating—5.0 (3 ratings) — better
Positive reviews—100.0% of reviews
Number of ratings—3 — better
Update frequencyDaily—
AdsNoNo
In-app purchasesYesYes
Monetization—Freemium
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size10 MB10 MB
Age rating4+4+
DeveloperFreedom Dimension (shenzhen) Technology Co., Ltd夏骏 倪

In-app purchases

1 purchases

OneScan

One-time1
  • Pro Lifetime$1.99
1 purchases

CaptionStudio

One-time1
  • 永久会员$1.99

Questions

Is OneScan free?
OneScan is free to download, with in-app purchases available.
Is CaptionStudio free?
CaptionStudio is free to download, with in-app purchases available.
Do OneScan or CaptionStudio have ads?
Neither OneScan nor CaptionStudio shows ads.

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