Tudao Robot vs OpusTranslator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Tudao Robot
This utility app allows users to control programmable robots using visual block-based coding. It offers guided assembly instructions and enables robot movement through custom programs.
- Robot movement control (forward, backward, turns)
- Block-based programming with Blockly
- Assembly and installation guidance
- Visual programming interface
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This is software of program blocks “Mechanical Master” and “Robot Master”, it can be used for controlling program blocks. The function of Mechanical Master: 1. Assembling and installing blocks teaching. The function of Robot Master as the blew: 1. Control robot go forward, backward, turn left and turn right. 2. Show the progress of assembling and installing blocks 3. Use Blockly edit program to control robot.
OpusTranslator
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Opus Translator — Offline & Private Translate speech, text, documents, and camera images — entirely on your device, with no internet required. Opus Translator uses on-device AI to deliver fast, accurate translation without sending your audio or text to any server. Everything stays on your iPhone. Works completely offline Download the app and language models once. After that, translate anywhere — on a plane, in a remote area, or wherever you need it — with no Wi-Fi or mobile data required. Speak and translate in real time Two-way conversation mode lets you have natural back-and-forth exchanges across language barriers. Lecture and continuous translation mode (Pro) Use for lectures, guided tours, or one-way presentations. Opus listens continuously and translates in real time without interruption. Camera and document translation (Pro) Point your camera at signs, menus, or documents to translate. Import documents and images directly for full-document translation. Extended language coverage (Pro) Go beyond Apple's built-in languages with expanded langauge support for a wider range of languages, all processed on-device. High-accuracy speech recognition (Pro) Advanced ASR delivers superior voice recognition accuracy, especially for challenging audio conditions. Export and read aloud (Pro) Save translated sessions as text, share transcripts, and listen back to translations. Your privacy is absolute No account required. No data collected. No cloud processing. The developer never sees your purchase information. Terms of Use: https://opustranslator.carrd.co/#terms
Screenshots
Verdict
The clearest difference is in-app purchases: Tudao Robot at none against OpusTranslator's 2. Tudao Robot also leads on update cadence (fortnightly vs every 6 weeks) and device support (3 vs 1). On price and ads 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
Both are free to download. OpusTranslator sells 2 in-app purchases, starting at $4.99 per month. Tudao Robot asks for nothing beyond the download.
Tudao Robot ships an update fortnightly, OpusTranslator every 6 weeks. The most recent releases landed on October 24, 2026 and October 14, 2026 respectively.
| Parameter | Tudao Robot | OpusTranslator |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 8 — better | — |
| Update frequency | Fortnightly — better | Every 6 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 130 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | 广州途道信息科技有限公司 | Khin Say VOONG |
In-app purchases
Tudao Robot
No in-app purchases
OpusTranslator
- Pro Monthly7 Days trial$4.991 Month
- Pro Lifetime$39.99









