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Best Offline AI Translators for Android: InkPeek vs Google Translate

Q: Does Google Translate work without internet?

Yes, but only for languages you downloaded beforehand via **Offline translation** inside the app; a language with no pack installed needs a connection.

Q: How do I prove an app is really translating offline?

Disable both Wi-Fi and mobile data, confirm `adb shell settings get global airplane_mode_on` returns `1`, then translate a fixed sentence and save a screenshot with `adb exec-out screencap -p`.

Updated: 21.10.2026 · AI Release · @ai_release1

Best Offline AI Translators for Android: InkPeek vs Google Translate

TL;DR

Both apps are tested under identical conditions: airplane mode on, the same source and target language, the same test sentence.
Google Translate translates offline only after you download a language pack for each language; nothing is installed by default.
InkPeek is installed from its own distribution channel; the exact package name, minimum Android version, model size and price are not covered by our source material — confirm them in the vendor documentation before you commit (see «check the documentation» markers below).
Use adb (Android Debug Bridge — a command-line tool that talks to a phone from a PC) so every result is a file on disk, not a memory of what you saw on screen.
Success criterion: the same sentence produces a readable translation with Wi-Fi and mobile data disabled, and the app prints no network error.
Time to complete: 25 minutes
Difficulty: Intermediate
You need: an Android phone (Android 11 or newer recommended for the svc commands below), a USB cable, a PC with adb installed, the Google Translate app from Google Play, the InkPeek build supplied by its vendor.

Requirements and setup

Android device with Developer options enabled: Settings → About phone → tap Build number 7 times, then Settings → System → Developer options → USB debugging = On.
adb on the PC: install Android Platform Tools. Verify with adb version; the output starts with Android Debug Bridge version <x.y.z> and the exact number depends on your package — check the documentation of your platform-tools release.
Cable and data permission: when you plug the phone in, a dialog Allow USB debugging? appears; tap Allow and tick Always allow from this computer.
Free storage: at least a few hundred megabytes, because every offline language pack or on-device AI model is stored locally. Exact sizes depend on the language pair and the app build — check the documentation.
Google Translate installed from Google Play.
InkPeek build obtained from its official distribution channel. Package name, model files and pricing: check the documentation. If you plan to sideload an .apk, keep it in an empty folder, e.g. ~/apk/inkpeek/.
A note on the wider context: if you are still choosing a phone-side AI stack, the overview in Best AI apps for Android in 2026 helps you see where translators sit next to chat and assistant apps.

Step 1. Confirm the device, the tooling and the storage budget

What to do: connect the phone, confirm that adb sees it, record the Android version and check free space before installing anything.

adb devices
adb shell getprop ro.build.version.release
adb shell getprop ro.product.model
adb shell df -h /data

Expected output, in order:

List of devices attached
<RANDOM_SERIAL>	device

Filesystem      Size  Used Avail Use% Mounted on
/dev/block/dm-5  108G   61G   46G  59% /data

The word device (not unauthorized, not offline) means the PC is allowed to control the phone. The Avail column is your headroom for language packs and models.

Why: every later check runs through adb. If the device is unauthorized, nothing else in this guide works, and you would waste time blaming the translator.

How to check: run adb devices a second time and confirm the same serial number shows device. If it shows unauthorized, unlock the phone and accept the debugging prompt again.

Example: on a test phone the model string came back as Pixel 7 and Avail showed 46G, which is more than enough for several language packs.

Step 2. Put both apps into a known, comparable state

What to do: install or update both apps, then download the offline data each one needs. For Google Translate, that means one language pack per language, downloaded inside the app: open Google Translate → profile icon (top right) → Offline translation → select language → Download. For InkPeek, install the vendor-supplied build and let the app download its offline model, following its own on-screen flow.

If you are sideloading InkPeek instead of installing from a store:

adb install -r ~/apk/inkpeek/<your-build>.apk

Expected output: Success. A failure prints a reason code, for example Failure [INSTALL_FAILED_INSUFFICIENT_STORAGE] — handled in Troubleshooting.

Then confirm both packages are actually present:

adb shell pm list packages | grep -i -E "translate|inkpeek"

Expected output (the InkPeek line appears only if the package name really contains inkpeek; otherwise grep by the vendor's package name from its documentation):

package:com.google.android.apps.translate
package:<vendor.package.for.inkpeek>

Optionally record the installed Google Translate build, so you know exactly what you tested:

adb shell dumpsys package com.google.android.apps.translate | grep -m1 versionName

Expected output: versionName=<x.y.z> — the number is whatever your Play build is; do not compare it against a figure from an article, check the current listing in Google Play.

Why: an offline translator is only offline for the languages it has already stored locally. Downloading the packs first is what separates a real offline test from a test that silently used mobile data.

How to check: in Google Translate open Offline translation again — each language you downloaded is listed there and the app shows that it is ready. In InkPeek, the app's model or language screen shows the model as installed rather than offering a download button.

Example: for an English↔Spanish test you need two Google Translate packs — English and Spanish — because the app translates each side of the pair locally.

Step 3. Run the offline test, compare the results, pick a winner

What to do: cut every network path from the phone, run the same sentence through both apps, and capture proof.

adb shell svc wifi disable
adb shell svc data disable
adb shell settings get global airplane_mode_on

The third command prints 1 when airplane mode is on and 0 when it is off. If it prints 0, enable airplane mode from the quick settings shade and run it again.

Then translate one fixed sentence in both apps, for example The meeting is moved to Thursday at 9 a.m., and save a screenshot of each result:

adb exec-out screencap -p > ~/offline-google.png
adb exec-out screencap -p > ~/offline-inkpeek.png

Expected result: two PNG files on the PC, each showing a translated sentence and no banner such as “Connect to the internet to translate”.

Finally, restore connectivity so you do not leave the phone broken:

adb shell svc wifi enable
adb shell svc data enable

Why: Wi-Fi and mobile data both have to be off. Leaving one radio on is the single most common reason a “failed” offline test turns out to have been online all along.

How to check: open the two PNG files and confirm three things — the sentence is readable, the meaning matches, and no network error is visible. Record the result in a table so the decision is not based on impressions:

App	Handles offline	Prerequisite	Price	What to confirm yourself
Google Translate	Yes, after language packs are downloaded	One pack per language, downloaded in-app	Free — confirm on the Google Play listing	Current listing and pack sizes
InkPeek	Yes, with its on-device AI model installed	The app's own model files	Not stated in our source material — check the documentation	Package name, minimum Android version, model size, licence

Example: decision rule used on a test device — if the offline pack already exists for your everyday pair and you only need short, predictable sentences, Google Translate is the zero-cost default; if you need on-device AI behaviour that the Google app does not expose, keep InkPeek, but only after its model has been downloaded once and the airplane-mode test passes.

[ ] adb devices shows device
[ ] Google Translate lists every language of your test pair under Offline translation
[ ] InkPeek shows its model as installed, not as “download”
[ ] adb shell settings get global airplane_mode_on prints 1
[ ] Two screenshots saved and inspected
[ ] Wi-Fi and mobile data re-enabled afterwards

If you also want to run the same comparison on a larger screen, the setup steps in How to Run Android Apps and Games on PC apply unchanged to both apps.

Troubleshooting

Problem. The InkPeek APK refuses to install.

Error: adb: failed to install base.apk: Failure [INSTALL_FAILED_INSUFFICIENT_STORAGE]
Cause: not enough free space in /data, or the model files must be downloaded after installation and the phone has no room for them either.
Solution: check adb shell df -h /data, free space, then retry with adb install -r ~/apk/inkpeek/<your-build>.apk. If the code is instead INSTALL_FAILED_OLDER_SDK, the build requires a newer Android version than the phone runs — compare ro.build.version.release with the minimum version in the vendor documentation.

Problem. A Google Translate language pack will not download.

Error on screen: Download failed next to the language in Offline translation.
Cause: the phone has no working connection at the moment of the download — typically because the previous test left airplane mode on — or the storage budget is exhausted.
Solution: adb shell svc wifi enable, confirm adb shell settings get global airplane_mode_on prints 0, then retry the download inside the app. Re-check free space with adb shell df -h /data.

Problem. The app still translates with airplane mode on, but the result looks suspiciously fresh.

Error / symptom: the request completes instantly for a language you never downloaded, or the app shows Connect to the internet to translate this language only after you disable Wi-Fi.
Cause: the source language was auto-detected as a language whose pack is missing, so the app either falls back or fails; or one radio was still on.
Solution: download the pack for the *detected* language, not only for the target language, then repeat Step 3 with adb shell svc wifi disable && adb shell svc data disable. Set the source language manually instead of auto-detect to make the test deterministic.

Summary and next steps

Google Translate gives you a free, predictable offline baseline as soon as one pack per language is downloaded, while InkPeek only earns a place on the phone after its model is installed and passes the same airplane-mode test. Repeat the test with your two real working languages and keep the screenshots, so the choice is documented rather than remembered. For the broader picture of on-device AI on Android, see Local AI Companions for Android.

FAQ

Does Google Translate work without internet?

Yes, but only for languages you downloaded beforehand via Offline translation inside the app; a language with no pack installed needs a connection.

Is InkPeek free?

Our source material does not state a price, so check the documentation and the vendor's current listing before relying on it.

How do I prove an app is really translating offline?

Disable both Wi-Fi and mobile data, confirm adb shell settings get global airplane_mode_on returns 1, then translate a fixed sentence and save a screenshot with adb exec-out screencap -p.

Why does the app ask me to connect when I already downloaded a language?

The detected source language is usually the missing one — download a pack for both sides of the pair and set the source language manually instead of auto-detect.

🤖 AI summary

Updated: 2026-10-21
Topics: офлайн переводчик для Android, перевод книг на Android без интернета, InkPeek переводчик
Summary: Сравнение офлайн-переводчиков для Android-читалок и книг: какие приложения переводят без интернета, распознают текст с экрана и объясняют смысл через ИИ.
Key facts:
- TL;DR Both apps are tested under identical conditions: airplane mode on , the same source and target language, the same test sentence.
- Google Translate translates offline only after you download a language pack for each language; nothing is installed by default.
- InkPeek is installed from its own distribution channel; the exact package name, minimum Android version, model size and price are not covered by our source material — confirm them in the vendor documentation before you commit (see «check the documentation» markers below).
- Use adb (Android Debug Bridge — a command-line tool that talks to a phone from a PC) so every result is a file on disk, not a memory of what you saw on screen.
- Success criterion: the same sentence produces a readable translation with Wi-Fi and mobile data disabled, and the app prints no network error.
- Time to complete: 25 minutes Difficulty: Intermediate You need: an Android phone (Android 11 or newer recommended for the svc commands below), a USB cable, a PC with adb installed, the Google Translate app from Google Play, the InkPeek build supplied by its vendor.

Best Offline AI Translators for Android: InkPeek vs Google Translate

TL;DR

Requirements and setup

Step 1. Confirm the device, the tooling and the storage budget

Step 2. Put both apps into a known, comparable state

Step 3. Run the offline test, compare the results, pick a winner

Troubleshooting

Summary and next steps

FAQ

Related guides

Best AI apps for Android in 2026

Local AI Companions for Android: Review of Apps for Offline LLM Chat

How to Publish a Private App on Google Play and Install It on Android