XS4 Sense vs WhichLang
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
XS4 Sense
Read full descriptionHide full description
XS4 Sense is the innovative solution for Hospitality, Residential and Office buildings that improves the energy efficiency of the buildings and gets at the same time certified accountability of the results in terms of energy savings. It has been conceived to be a global product/solution easy to be installed in existing buildings thanks to the intensive adoption of wireless technologies (Wi-Fi and BLE combined).
WhichLang
Read full descriptionHide full description
Which language is being spoken right now? WhichLang listens through your microphone and shows you in real time which language is spoken around you โ with its confidence, for over 90 languages. Just open the app and it starts. No tapping, no setup, no sign-up. โข IDENTIFIES OVER 90 LANGUAGES From German, English, Russian and Turkish to Ukrainian, Arabic, Chinese, Japanese and many more. WhichLang shows the three most likely languages with a percentage โ great for gauging certainty even between similar languages. โข COMPLETELY OFFLINE All recognition runs on your device. No audio ever leaves your iPhone, and the app works without internet โ on a plane, on the subway, abroad. โข PRIVACY FIRST Audio is never recorded, stored, or transmitted. The microphone is only active while the app is open. No account, no ads, no tracking. โข LIVE DISPLAY A level visualization shows you that WhichLang is listening, and results update smoothly as people speak. โข HISTORY (optional) If you like, WhichLang remembers which languages were detected and when โ the result only, never audio. Deletable anytime, stays local on your device. Perfect for travelers, language lovers, people in multilingual settings, and anyone who ever wondered: "What language is that?" WhichLang is free and contains no ads.
Screenshots
Verdict
XS4 Sense and WhichLang are too close to call on the numbers: across 5 compared parameters โ price, ads, in-app purchases and device support among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | XS4 Sense | WhichLang |
|---|---|---|
| Price | Free | Free |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 14.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 26 MB | 52 MB |
| Age rating | 4+ | 17+ |
| Developer | Salto Systems | JOCHEN MAURER |
In-app purchases
XS4 Sense
No in-app purchases
WhichLang
No in-app purchases









