OffLingua vs proLingo+
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
OffLingua
This app offers AI-powered, private offline translation for 55 languages directly on your device. It supports text, photo, and voice input with a refined interface and advanced on-device speech recognition. All translations are processed locally, ensuring your data never leaves your iPhone.
- Offline AI translation for 55 languages
- On-device text, photo, and voice translation
- Automatic OCR for photo translation
- Quick Translate Panel
- Encrypted local conversation history
- Transparent on-device performance indicators
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OffLingua is a powerful, privacy-first offline translation app that runs entirely on your iPhone, redesigned from the ground up to feel like a brand-new product while keeping its core promise intact: no internet, no uploads, no tracking. Powered by TranslateGemma 4B, Google DeepMindβs advanced open translation model running fully on-device, OffLingua delivers high-quality AI translation across 55 languages including English, Spanish, French, German, Chinese, Japanese, Arabic, and more, even in airplane mode or remote areas. The app supports multiple input methods in a refined, premium interface: instant text translation, photo translation with automatic OCR and improved overlay readability, and natural voice translation using on-device speech recognition. A clear three-mode navigation (Text, Speech, Photo) sits at the core of a new visual identity with modern typography, spacing, accent colors, intentional motion, and translation cards that offer clearer hierarchy, micro-feedback, inline βlistenβ actions, and smarter error states. New features elevate the experience further, including a Quick Translate Panel for one-tap translation, language swapping, live transcripts, speak and listen modes, and smooth translation streaming. Conversation history is stored locally in an encrypted database, allowing you to switch languages mid-conversation and resume any session from the sidebar. Transparent on-device performance indicators clearly show when the app is offline-ready or when the model is downloading, without exposing technical clutter. All translations happen 100% on your device. No cloud servers. No data collection. No tracking. Your text, voice, and photos never leave your iPhone, fully compliant with GDPR and global privacy standards. Download the AI model once on WiFi, then use OffLingua offline forever. Break language barriers without breaking your privacy.
proLingo+
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proLingo+ is a real-time speech transcription and translation app. Speak naturally, and see your words transcribed and translated instantly. One-time purchase, no subscription β yours forever. KEY FEATURES Real-Time Transcription On-device speech recognition transcribes your voice to text in real-time with high accuracy. Supports 28 languages. Dual ASR Engine Choose between the built-in Local Engine (fully offline, no data leaves your device) or Azure Speech (cloud-powered, superior accuracy, no time limit). Switch anytime in Settings. Instant Translation Translate transcribed text in real-time using on-device translation. No internet connection required for translation. Live Waveform See your voice activity visualized with a smooth, adaptive waveform that responds to your speech in real-time. Session History All transcription sessions are automatically saved. Review and export past sessions anytime. Export & Share Save transcripts as text or SRT subtitle files. Share directly from the app. ONE-TIME PURCHASE Pay once, use forever. No subscription fees, no in-app purchases, no hidden costs. All features included. All future updates included. SUPPORTED LANGUAGES Speech Recognition: 28 languages including English, Chinese, Japanese, Korean, Spanish, French, German, Arabic, Hindi, Thai, Vietnamese, Indonesian, and more. Translation: 20+ language pairs powered by on-device translation. PRIVACY Microphone is used only for live transcription. With the Local Engine, all processing stays on-device. No account required. No tracking. No ads.
Screenshots
Verdict
The clearest difference is price: proLingo+ at Free against OffLingua's $14.99. On ads, in-app purchases, device support and iOS requirement there is nothing between them.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
proLingo+ is free to download; OffLingua costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | OffLingua | proLingo+ |
|---|---|---|
| Price | $14.99 | Free β better |
| Positive reviews | 100.0% of reviews | β |
| Update frequency | Every 2 months | β |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | β |
| Devices | iPhone | iPhone, iPad β better |
| Requires iOS | 17.0 β better | 18.0 |
| Further details β not scored | ||
| Size | 8 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | R&D COPILOT SRL | 岩 η |
In-app purchases
OffLingua
No in-app purchases
proLingo+
No in-app purchases









