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Saydi vs Google Translate: translating speech when talking with foreigners

By Official AppDuo editorial team · Updated

Saydi logoSaydi6.8/10Freemium · $9.99/moGoogle Translate logoGoogle Translate7.5/10Free · Free

Quick verdict

Google Translate is free and works offline once languages are downloaded. Saydi charges in credits and adds tools for online meetings and transcripts.

Saydi launched in late 2025 with three modes: two-way translation, one-way translation and transcription, plus speaker labels and AI summaries. Its Free plan is a trial amount; Pro costs $9.99/month. The store listings advertise on-device processing, yet Saydi's own privacy policy says audio is sent to Deepgram and Google.

Google Translate dates from 2006 and is free on the web, Android and iOS, with up to 249 languages per its App Store listing. Alongside two-way conversation it offers camera translation, and a Gemini-powered live translation mode arrived in August 2025 with 70 languages. When you are signed in, translation history can be saved to your Google Account.

Head-to-head

Saydi leads on 1, Google Translate on 5, 3 even

FeatureSaydiGoogle Translate
Conversation mode[1],[7],[11],[21]Two-way, one-way and transcribe modes with automatic language detection and speaker labels; two-way voice translation arrived in version 3.0 (15 June 2026).Two-way conversation and speech input; Gemini-powered Live translate launched in August 2025 with 70 languages, initially only in the US, India and Mexico.
→ Both handle back-and-forth speech; Saydi adds speaker labels and a transcript, which helps in longer exchanges.
Translation languages[1],[11],[17]60+ languages, per the developer.Up to 249 languages per the App Store; available features vary by language.
→ If the other person speaks a less common language, Google Translate is more likely to cover it.
Offline use[4],[11],[13]The sources AppDuo read describe no offline mode; the privacy policy says audio is streamed for real-time processing.Yes, once each language is downloaded; camera translation also works offline for downloaded languages.
→ Where signal is weak or you have no travel SIM, only Google Translate documents an offline option.
Free tier[2],[11]Free plan, no card: about 100 credits in the first month (about 2 hours 13 minutes of voice-to-text), 10 minutes per session.The whole service is free; Google's about page states no cap on translations.
→ Saydi's free tier is a trial amount; Google Translate costs nothing for ongoing use.
Paid plan for individuals[2],[7],[11]Pro at $9.99/month on the official pricing page, or $95.90/year on the App Store (about $7.99/month), with 1,000 credits a month and unlimited session length.No paid plan for individuals recorded.
→ Regular use of Saydi means paying; the pages consulted show no charge for individuals on Google Translate.
Meetings and computer audio[1],[6],[7],[11]macOS app plus Chrome and Edge extensions; the Chrome extension works with Google Meet, Zoom and Microsoft Teams. Version 3.0 on the App Store added screen-audio translation. AI summaries.No meeting-app integration in the sources read; it translates documents with formatting kept and whole webpages from a URL.
→ People who regularly meet foreign partners online get dedicated tooling in Saydi.
Camera translation[1],[11],[13]The sources AppDuo read list no camera translation.Point the camera for instant translation or translate a photo; handwriting input too.
→ For signs and menus on the road, Google Translate covers it; the sources AppDuo read list nothing comparable for Saydi.
Audio privacy[4],[7],[9],[14],[15]Store listings say on-device; the privacy policy says audio goes through Deepgram and Google and raw recordings are not kept permanently. Google Play says data isn't encrypted, the policy cites HTTPS/WSS.History is saved to your Google Account when signed in with Web & App Activity on, and can be deleted in My Activity; the help pages do not say whether translations train models.
→ Saydi's statements contradict each other and Google leaves a gap; neither is reassuring for sensitive content.
Track record and ratings[8],[9],[17],[19],[20]No independent accuracy evaluation in the sources AppDuo read. 4.5/5 on Google Play (1,250 reviews), 4.22/5 on the Vietnam App Store (812 ratings).Wikipedia cites a 2019 study showing wide quality gaps between languages. 4.0/5 on the Vietnam App Store (21,426 ratings), 4.2/5 on Google Play (9,023,512 reviews).
→ Saydi rates higher but on far fewer ratings; Google Translate has much more evidence, including about its weaknesses.

Choose Saydi if…

  • You often meet foreign partners online over Meet, Zoom or Teams
  • You want a transcript with speaker labels and a summary afterwards
  • You are fine paying in credits or buying a pack per trip

Choose Google Translate if…

  • You travel and need translation where there is no signal
  • You need to read signs and menus with your phone camera
  • You do not want to pay or keep an eye on usage limits
  • The person you need to talk to speaks a less common language

Paying for a single trip

Cost barely comes up with Google Translate. Saydi offers several ways to pay, and picking the wrong one can cost more than needed. For a short trip, the App Store sells 3-, 4- and 7-day Trip Packs at $4.99 to $7.99. For occasional use, pay-as-you-go credits ($2 per 200) never expire and need no subscription. Free-plan credits, by contrast, expire after a month, and subscription credits do not roll over. One easy thing to miss: spoken output burns credits much faster than text. Voice-to-text costs 45 credits an hour, basic voice-to-voice 200 and premium voice-to-voice 400. So Pro's 1,000 credits cover roughly 22 hours of voice-to-text but only about 5 hours of basic voice-to-voice.

Where your voice goes

This is where Saydi deserves the closest reading. Its App Store and Google Play descriptions advertise on-device processing, while the privacy policy (updated December 2025) describes audio streamed in real time: Deepgram turns speech into text and Google handles translation. The policy says neither keeps the audio or uses it for model training, and transcripts sit on Saydi's servers only if you save a session. The developer's self-declared App Store label also lists usage data as used to track you. In other words, by Saydi's own policy your speech still passes through Google for translation. The sources AppDuo read found no credible reports of breaches, lawsuits or complaints about Saydi. With Google Translate, turning off Web & App Activity stops new history being saved to the account, and keeping history on the device only means signing out; Google says it does not sell personal information, but the sources read say nothing specific about how voice audio is handled.

No signal, and abroad

For Google Translate to work offline, you must download each language before you travel. The sources AppDuo read do not say whether conversation mode works without a connection, though camera translation is stated to work offline. Live translate launched only in the US, India and Mexico (per AlternativeTo), so it may not appear on your phone. Wikipedia also reports that Google discontinued Google Translate in mainland China in September 2022, citing low usage. For Saydi, the sources read mention no offline use, and the policy describes audio being sent to servers for processing. If you plan to rely on Saydi where coverage is patchy, ask the developer before you go.

How far to trust the translation

Saydi is new: its first App Store release was on 18 December 2025, it publishes no latency figures, and its Product Hunt page has no reviews yet. The App Store lists Notionis Technologies Pte. Ltd. (Singapore) as developer, while the terms are issued by SotaX Company Limited, which the site footer names as Saydi's operator in Vietnam. Google Translate has far more evidence, good and bad. In a 2019 study cited by Wikipedia, 67 of 102 languages fell short of minimally comprehensible output at least half the time. It does best with simple, formal text in major languages. Keep spoken sentences short and clear, and for anything that matters, such as a doctor's visit or signing papers, do not rely on either app alone.

Frequently asked questions

Does Saydi support Vietnamese?

Yes. Vietnamese is among Saydi's interface languages on the App Store and the translation languages named on Google Play. Google Translate also has a Vietnamese interface.

Is any part of Google Translate paid?

The app and website are free. Only businesses building translation into their own products use Cloud Translation, a separate paid Google Cloud service.

Can I get a refund from Saydi if I change my mind?

Saydi's terms give a 100% refund only in set cases: a technical failure on its side it cannot fix (request within 14 days), or a payment without access granted or a duplicate charge (request within 30 days). Email [email protected] with the subject [Refund] and the transaction ID.

Is Saydi's Free plan enough for a long conversation?

Not really: Free sessions stop at 10 minutes each. Pro removes the session-length cap.

Sources

Numbers in the table refer to these sources, read on the dates shown.

  1. 1.Saydi official site · Vendor-provided · Nov 13, 2026
  2. 2.Saydi official pricing page · Vendor-provided · Nov 13, 2026
  3. 3.Saydi policies & terms · Vendor-provided · Nov 13, 2026
  4. 4.Saydi privacy policy · Vendor-provided · Nov 13, 2026
  5. 5.Saydi help center · Vendor-provided · Nov 13, 2026
  6. 6.Saydi download page · Vendor-provided · Nov 13, 2026
  7. 7.App Store listing (US) · store · Nov 13, 2026
  8. 8.App Store lookup (Vietnam storefront) · store · Nov 13, 2026
  9. 9.Google Play listing · store · Nov 13, 2026
  10. 10.Product Hunt page · review-site · Nov 13, 2026
  11. 11.Google Translate official about page · Vendor-provided · Nov 10, 2026
  12. 12.Google Translate Help: translate text · Vendor-provided · Nov 10, 2026
  13. 13.Google Translate Help: translate text in images · Vendor-provided · Nov 10, 2026
  14. 14.Google Translate Help: manage Translate history · Vendor-provided · Nov 10, 2026
  15. 15.Google Translate Help: how Google protects your privacy · Vendor-provided · Nov 10, 2026
  16. 16.Google blog: 110 new languages (2024-06-27) · Vendor-provided · Nov 10, 2026
  17. 17.App Store listing (Vietnam) · store · Nov 10, 2026
  18. 18.iTunes Lookup API (rating, release date, languages) · store · Nov 10, 2026
  19. 19.Google Play listing · store · Nov 10, 2026
  20. 20.Wikipedia: Google Translate · Community-reported · Nov 10, 2026
  21. 21.AlternativeTo: Live translate and practice (2025-08-27) · press · Nov 10, 2026

Prepared by the AppDuo Editorial Team from the sources cited in this article. AI assists with organising and cross-checking data; editorial responsibility remains with AppDuo.

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