Chemistry
v2.11 · 5.2 MB · code 40
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File information
UpdatedNov 19, 2024
PublishedFeb 11, 2021
Packagecom.chemistry
Versionv2.11 (40)
Size5.2 MB
MD558bf6f4a6f1a13f4b6a0677aab0f90a0
Min SDK14
ABIsx86-64
Malware scanTRUSTED
Signature SHA1A5:F1:B1:76:A5:0B:A6:3A:8A:A9:21:E9:67:3A:F4:37:97:FC:39:6C
SignerCN=Denis Chaschin, L=Saint-Petersburg, C=7
Total downloads5,000,000
This version5,000,000
DeveloperiHelpNYC
Age ratingEveryone
What's new in v2.11
Finally, the offline search is supported using a local database!
The app can find chemical reactions locally without using the internet. The local database is small, but still contains the most requested chemical reactions which are very helpful.
Besides this:
* Title in the Periodic Table has been fixed: "|||B" instead of "||B".
* Chemical reactions format has been improved. Some unexpected characters like "(.)" are removed from the search results.
The app can find chemical reactions locally without using the internet. The local database is small, but still contains the most requested chemical reactions which are very helpful.
Besides this:
* Title in the Periodic Table has been fixed: "|||B" instead of "||B".
* Chemical reactions format has been improved. Some unexpected characters like "(.)" are removed from the search results.
Security scan
TRUSTED
- Developer signature verified 2024-11-19
- Signature SHA1 A5:F1:B1:76:A5:0B:A6:3A:8A:A9:21:E9:67:3A:F4:37:97:FC:39:6C
- File MD5 58bf6f4a6f1a13f4b6a0677aab0f90a0
How to install Chemistry v2.11 on Android API 14+
Takes about 2 minutes. You'll need roughly 5.2 MB of free storage.
- Grab com.chemistry_40.apk — hit the Download button above (5.2 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 58bf6f4a6f1a13f4…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.chemistry_40.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Denis Chaschin, L=Saint-Petersburg, C=7. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Chemistry — tap Open on the install screen, or find the Chemistry icon in your app drawer (this build targets x86-64 devices).
Common install errors for Chemistry
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android API 14 or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.