Comparison

Rosettica vs HashChat

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

Head to head
About

Rosettica

Features
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Rosettica is a privacy-first AI translation app for iPhone, iPad, and Mac. Translate text into multiple languages at once with TranslateGemma running on-device, stream results in real time, and keep your data off third-party servers. Powered by TranslateGemma 4B on Apple's MLX framework, Rosettica runs fully on-device for maximum privacy. You can also connect to your own OpenAI-compatible server, or let your iPhone use your Mac as a local translation server over Wi-Fi. KEY FEATURES: β€’ On-Device AI Translation β€” Run TranslateGemma locally on Apple Silicon. After a one-time model download, translation works entirely offline with no cloud APIs. β€’ Local Network Translation (Mac + iPhone) β€” Turn your Mac into a translation server for nearby iOS devices. Your iPhone discovers the Mac automatically via Bonjour on the same Wi-Fi network and offloads translation to the Mac's more powerful hardware. All traffic stays on your local network. β€’ Multi-Target Translation β€” Translate to multiple target languages simultaneously. Each language gets its own live-updating card with real-time streaming output. β€’ Automatic Source Language Detection β€” Rosettica detects the source language automatically using on-device NaturalLanguage analysis. You can also override the detected language manually. β€’ 55+ Language Coverage β€” Built on TranslateGemma, benchmarked across 55 core languages including Chinese, Japanese, Korean, Arabic, Spanish, French, German, Hindi, and more. β€’ Image-to-Text Input (OCR) β€” Extract text from photos, camera captures (iOS), or imported image files (Mac), then translate it instantly. β€’ Flexible Backends β€” Switch between on-device, remote server, or local network modes in Settings. β€’ Multiple Remote Endpoints β€” Configure and prioritize multiple OpenAI-compatible endpoints (LMStudio, vLLM, Ollama, etc.) with connection testing, model discovery, and drag-and-drop reordering. β€’ Performance Controls β€” Tune max parallel translation tasks to balance speed and memory usage for your hardware. No upper limit β€” you decide based on your device. β€’ Translation History + Search β€” Every translation is saved locally. Browse, search, and copy past results anytime. β€’ iCloud Backup & Restore β€” Back up and restore your translation history using your own iCloud account. β€’ Privacy First β€” No analytics SDKs, no tracking, no account required. Your translations stay on your devices. Rosettica is free with an optional tip jar. Built for people who need fast multilingual workflows while staying in control of where their data is processed.

About

HashChat

Features
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HashChat (formerly Mingle) β€’ HashChat supports all-direction interpreting and translation across 3+ languages. Even when multiple languages are mixed in the same conversation, everything is translated in real time, so you do not need to manually choose or switch languages whenever speakers change. β€’ Get uninterrupted translation with live transcripts. Instead of stopping after each sentence, HashChat continuously translates along the full flow of your conversation or meeting, helping you follow context naturally. β€’ See real-time captions and translations even for audio from other apps. If you run voice apps such as phone calls, radio, or Discord in the background on speakerphone while HashChat is in the foreground, that audio is captured as HashChat input and shown instantly as transcripts and translations. β€’ Listen to translation as real-time voice interpreting. Turn on voice output to hear translated content like having an interpreter beside you, so you can understand without looking at the screen, even while running. β€’ Keep it running in the background and switch apps freely. Even if you lock your screen or move HashChat to the background, it stays active and continues writing live conversation logs and translations. HashChat: Global Hangout

Screenshots

Rosettica3 screens
HashChat4 screens

Verdict

The call

The clearest difference is in-app purchases: HashChat at none against Rosettica's 2. HashChat also leads on update cadence (every 4 days vs every 4 weeks) and iOS requirement (15.1 vs 17.0). On price, ads and device support 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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Rosettica sells 2 one-off in-app purchases. HashChat asks for nothing beyond the download.

UpkeepUpdate frequency

Rosettica ships an update every 4 weeks, HashChat every 4 days. The most recent releases landed on October 28, 2026 and October 31, 2026 respectively.

Scorecard3 real differences Β· 3 level
Rosettica versus HashChat: the parameters behind the verdict, then further details
ParameterRosetticaHashChat
PriceFreeFree
Update frequencyEvery 4 weeksEvery 4 days β€” better
AdsNoNo
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, Mac β€” betteriPhone, iPod
Requires iOS17.015.1 β€” better
Further details β€” not scored
Size32 MB23 MB
Age rating4+12+
Developer智敏 焦HYEONGKEOL NAM

In-app purchases

2 purchases

Rosettica

One-time2
  • Small Coffee$1.99
  • Large Coffee$5.99
None

HashChat

No in-app purchases

Questions

Is Rosettica free?
Rosettica is free to download, with in-app purchases available.
Is HashChat free?
HashChat is free to download, with no in-app purchases.
Do Rosettica or HashChat have ads?
Neither Rosettica nor HashChat shows ads.
Which is updated more often, Rosettica or HashChat?
Rosettica ships an update every 4 weeks, and HashChat every 4 days. Most recently, Rosettica was updated on October 28, 2026 and HashChat on October 31, 2026.

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