TransKey - Chat Translator App 4+

Translation Keyboard Extension

Aleksander Skjoelsvik

    • 4.5 • 12.8K Ratings
    • Free
    • Offers In-App Purchases

iPhone Screenshots


Chat in any language without switching apps! TransKey translates your messages in real-time within any app from the keyboard!

TransKey is the leading chat translator trusted by over 300,000 users and featured on sites like CNET, Product Hunt, Addictive Tips, and more!

Over 10,000 5-star App Store reviews!
"I didn't think something like this was possible, but I'm happy to say I've been proven wrong. This is a great app to have on your iPhone!"


TransKey is a keyboard extension that translates your messages inside any app (such as WhatsApp, iMessage, Facebook, Email, and many more).

TransKey also works the other way around. Copy the text you can't understand and TransKey will show you what it means in your native language!


Write what you'd like to say, but before sending your message, tap and hold the Globe key to switch to TransKey. After selecting a target language, tap "Translate text" and watch your message get translated right in the app!

If you'd like to translate a message you received, tap and hold it until an option to "Copy" appears. In TransKey tap "Translate copy", and the translation will appear in the same place!

Never encounter another language barrier again when communicating with people in other countries! TransKey provides a flawless translation experience right in the messaging app of your choice unlike other translators which interrupt the flow by forcing you to switch to another app.

Unlike other translator keyboards, TransKey does not have a keyboard for typing. This allows you to use the keyboard you're most comfortable with, such as the iOS or SwiftKey keyboards.

Before TransKey:
1. Type your message
2. Copy the message
3. Exit the app you're currently using
4. Open a translation app
5. Paste your message
6. Translate the message
7. Copy the translated message
8. Exit the translation app
9. Open the chat app
10. Paste the translated message

After TransKey:
1. Type what you need to translate
2. Switch to TransKey
3. Tap translate


• Translate the last sentence of any text field directly within any app
• Translate received messages directly within any app
• Fast and accurate translation to and from over 100 languages
• Automatic detection of source language
• Copy the translation to be used anywhere
• Optimized for all iPhone screen sizes in both portrait and landscape
• Preserves capitalization and emojis

I built TransKey by myself, so if you enjoy the app please tell your friends about it, write a review on the App Store, or send me your thoughts through the app. I'd greatly appreciate it!


For accurate real-time translations, TransKey relies on industry leading machine-translation engines such as Google, Microsoft, and Yandex.

Full access is needed to communicate with the translator, the keyboard cannot function otherwise. We do not get access to everything you write, only the last sentence of the text field in focus when you are using TransKey. We do not store or keep a record of anything you translate, please read our Privacy Policy for further information.

Terms and Conditions:
Privacy Policy:

TransKey is entirely free to use up to 10 translations per day. For a small fee you can upgrade to TransKey Premium, with unlimited high-quality translations. Subscriptions will be charged to your credit card through your iTunes Account and renew automatically unless cancelled at least 24 hours before the end of the period. You will not be able to cancel a subscription during the active period. You can manage your subscriptions in your Account Settings after purchase.


Any questions, comments, or concerns? We'd love to hear them! Reach us directly by email at

What’s New

Version 1.15.0

Howdy! We've completely revamped the underlying in-app purchase infrastructure which should provide you with a more seamless experience with subscription renewals directly in the keyboard– no more restoring purchases in the companion app!

Along with a number of other improvements we hope you enjoy this latest version of TransKey. As always, if you have any problems, questions, or concerns feel free to reach us directly at

Ratings and Reviews

4.5 out of 5
12.8K Ratings

12.8K Ratings

Skorpionzz ,

Great app, not so great system

So first off, I’d just like to say I REALLY like this keyboard app. It’s quick, useful, and easy to use. It definitely has something going for it. My problem is the whole “Premium” thing. Now, I understand having premium in-app purchases, but I feel they should limit the amount of characters you use. I would personally prefer something like a restriction on the languages, rather than the characters. I.E., me and my friend where texting in Swedish, having fun. Then, I ran out of characters, keeping me from communicating with my friend in Swedish w/ our the use of google translate or another app. In conclusion, I can see that this article p has a bright future, but that character limit REALLY has an effect on non premium users. Thank you for reading this review.

Developer Response ,

Thank you for your exhaustive feedback!

I understand you were unable to finish texting your friend in Swedish due to the character limit on the free tier. To clarify, the free tier is limited to 180-characters per day. This is about 6 translations, depending on the length of your messages. This is sufficient for most casual users.

For more frequent users, the Premium tier allows for unlimited higher-quality translations. Billed yearly, the price is around $0.8/ month, or less than 1/5th a small coffee mocha at Starbucks each month. I priced it as cheap as I could to allow as many people as possible access to this technology. I would love to give it out for free, but unfortunately that is not sustainable given I have to pay for each translation made, Premium or not.

In addition, you can also get Premium entirely for free by sharing the app with friends. For each friend you refer, you get a full week of TransKey Premium!

I will look into other monetization options to cater to more users like yourself, who may not use the app frequently, but a lot when they do. One option could be to put the character-cap on the free tier per-week instead of per-day. Please stay on the lookout for future updates of TransKey that may introduce such changes.

Hope this helps! If you have any further questions or comments, please feel free to reach me directly at


AnimatedDanxX ,

Small bug

I’d like to start off by saying that I love this app and use it pretty consistently. I’d totally upgrade to premium...if I weren’t broke. I am not here to complain about the fact that I must pay which seems to be the other reviews as I’ve read and completely understand that this comes out of your own pocket. My issue is that there’s what I can only assume is a glitch in my app. I have full access allowed for TransKey but when I go to translate and try to select a language it appears blank. Even when I’m selecting a language for a slot that already has one filled in. Say English as it is the base for me. If I tap on it it brings up the language selector but has no languages filled in. I understand that you may have moved away from this and may no longer be supporting it. So please let me know.

Thank you for the fantastic service!

Quantumator ,

Has a lot of potential

First, the creator of this app is very responsive and helpful. That is a huge plus in itself. I am changing my rating to 5 stars for that reason.

If you converse in other languages much, the easy use and capabilities of this app make it an excellent option. The free use is very limited, but the premium service is reasonably priced if you will use it regularly. Just be aware in advance of exactly what you are gettin: premium is a monthly or yearly fee. Don’t rate the app lower because you have to pay for the service—that’s how the app works. It’s the free part that is the extra. And it’s waaaay cheaper than most “in-app purchase” apps.

$1.99/month or less than $1/month if paid yearly...for unlimited easy, in-app translations and a developer who responds well? Definitely worth the cost in my opinion.

Developer Response ,

Thank you for your feedback, and I'm sorry TransKey did not live up to your expectations.

By default, you get 180 free characters per day. On average, this is about 6 translations (depends on the length of your messages). While sufficient for most, I also offer a Premium tier that features unlimited higher-quality translations.

I have tried to make this as affordable as possible, and offer two payment plans:
• The first is billed monthly at $1.99 (depending on your App Store country), and allows you to cancel and resubscribe at any time.
• The next is billed yearly at an effective rate of ~$0.8 per month. This is more similar to an up-front price, in that you pay once and don't have to think about it again. There is also a 1-week free trial, so you can give it a try and cancel at any point before it renews to avoid being charged.

At less than 1/5th the price of a small Caffe Mocha at Starbucks, I believe this option to be a great value.
However, you can also get TransKey Premium entirely for free by sharing the app with friends! For each person who downloads using your link, you get a full week of TransKey Premium. To get started, open the TransKey companion app and select "Refer Friends" in the main menu.

Hope this helps! If you have any further questions or comments, please feel free to reach me directly at


App Privacy

The developer, Aleksander Skjoelsvik, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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