We monitor 175 App Store storefronts to answer one question —

Is 化学元素 censored by Apple?

Gone.

化学元素 is gone from every App Store storefront we test. It was last seen available on Nov 25, 2019.

1,114 tests on record·last checked 5 days ago

Why it is unavailable

Five things can put an app out of one App Store. Each is weighed below against what can be seen from outside — open a card for the reasoning.

  • A government or a court demanded itPossible

    and Apple complied. Apple publishes a count of these per country each year and never says which apps they were. Apple's 2025 App Store Transparency Report

    • Reference apps in the United States are unavailable at 2%, near the 5% for everything there, which cuts neither way.
    • 2 other apps left Italy the same day, Mar 7, 2024.
    • Apple reports 1,213 government-ordered removals in Russia for 2025, naming none of them.
  • Apple applied a rule, unaskedPossible

    either its own review guidelines, or its own reading of a local law, with nobody having demanded anything. This is the largest category in Apple's own removal figures by a wide margin, and it covers distribution permits as well as content — Apple kept a free Bible app out of mainland China in 2021 for want of one. Apple's 2025 App Store Transparency Report

  • The developer withheld itPossible

    freely, or under legal advice of their own, or because Apple's guidelines require that kind of app to be limited to certain countries. Switching a country off is easy for a developer to do in Apple's own tools: it needs no new version of the app, and it leaves no public trace other than the app being unavailable.

  • Something brokeUnlikely

    a rejected update, a lapsed certificate, a payment or licensing problem, a mistake nobody has got round to noticing.

  • A local rule about paying for itRuled out

    gambling licences, financial rules, tax — the kind of law that governs a transaction. Apple can obey every one of them by refusing the payment, which is why this is the only restriction we would accept and the only one that cannot touch a free app.

    • It is free, so Apple sells nothing here.
How this is weighed, and what it cannot tell you

Weighed from the evidence under each card, not from a model. There is no published figure for how Apple's removals divide up, so these are ordered words rather than percentages. For scale on the same-day counts: across the whole record an app leaves a storefront with fewer than two others, so a dozen at once is not a dozen coincidences.

None of this is certain, and a citation does not make it so: Apple naming a Chinese agency tells you what Apple said, not everything that happened. What can be said is that the readings alone cannot separate these five — a developer switching off a country and a government ordering it removed arrive at Apple's catalogue looking identical — and that nobody has ever measured how they divide across the App Store. The one careful study of the question was done on Google's store, using an error message Apple does not emit.

Apple publishes no record of which apps are unavailable in which of its App Stores. For the removals it makes on a government's demand it publishes the agency and the law behind every one — 2,045 of the 166,899 apps it removed during 2025 — and never which app. Where a reason reaches the public at all, it is usually because a developer chose to say so. Apple's App Store Transparency Report

Know of a statement, notice or order we have missed? Tell us →

化学元素

Developer: TSANG SIU CHI · Category: Reference · Released: Feb 1, 2012 · Rating: 2.3★

View in App Store ↗
0stores where available
131stores where blocked
4.65Bpeople behind the block
131of 175 stores tested
1,114tests on record

Other Reference apps missing from mainland China

Everything missing from mainland China →

Life of this app

  1. Feb 1, 2012Released on the App Store
  2. Feb 26, 2019First tested by AppleCensorship
  3. Nov 25, 2019Last seen available anywhere
  4. Jun 28, 2021Gone from 131 storefronts
  5. Sep 13, 2026Most recent test

Testing history

One column per month, every month from the first reading to the last. Height follows how many readings we took that month; red is the share of them that found the app unavailable. An empty month is one nobody tested.

2019-022026-09

Found availableFound unavailable

Availability by storefront

Every storefront we test, current status first. Data is a measurement, not a promise: each row carries its own date.

Test now
AfghanistanAFUnavailableMar 6, 20243 years ago
AlgeriaDZUnavailableDec 30, 20213 years ago
AngolaAOUnavailableNov 4, 20203 years ago
AnguillaAIUnavailableJul 31, 20202 years ago
Antigua & BarbudaAGUnavailableApr 26, 20212 years ago
ArgentinaARUnavailableDec 6, 20202 years ago
ArmeniaAMUnavailableJun 22, 20233 years ago
AustraliaAUUnavailableMar 13, 20227 months ago
AustriaATUnavailableMay 12, 20214 years ago
AzerbaijanAZUnavailableApr 27, 20222 years ago
BahamasBSUnavailableNov 13, 20202 years ago
BahrainBHUnavailableJun 30, 20222 years ago
BarbadosBBUnavailableJan 12, 20223 years ago
BelizeBZUnavailableJul 23, 20214 years ago
BeninBJUnavailableJul 14, 20242 years ago
BhutanBTUnavailableJan 25, 20252 years ago
BoliviaBOUnavailableMar 4, 20202 years ago
BotswanaBWUnavailableMar 4, 202033 days ago
British Virgin IslandsVGUnavailableNov 20, 20202 years ago
BruneiBNUnavailableOct 19, 20213 years ago
BulgariaBGUnavailableDec 18, 20202 years ago
Burkina FasoBFUnavailableJul 21, 20212 years ago
CameroonCMUnavailableOct 18, 20242 years ago
CanadaCAUnavailableFeb 11, 20243 years ago
Cape VerdeCVUnavailableApr 26, 20224 months ago
ChadTDUnavailableMar 26, 20242 years ago
ChileCLUnavailableMar 3, 20212 years ago
China (Mainland)CNUnavailableMar 4, 20202 months ago
ColombiaCOUnavailableNov 27, 20202 years ago
Costa RicaCRUnavailableNov 1, 20204 years ago
Côte d’IvoireCIUnavailableNov 9, 202233 days ago
CyprusCYUnavailableMay 29, 20242 years ago
DenmarkDKUnavailableApr 7, 20214 years ago
DominicaDMUnavailableNov 20, 20204 years ago
Dominican RepublicDOUnavailableJun 13, 202243 days ago
DR CongoCDUnavailableJun 30, 20224 years ago
EcuadorECUnavailableMar 4, 202010 months ago
EgyptEGUnavailableDec 12, 20204 years ago
El SalvadorSVUnavailableMar 8, 20213 years ago
EstoniaEEUnavailableJul 19, 20212 years ago
EswatiniSZUnavailableJul 31, 20202 years ago
FinlandFIUnavailableSep 2, 20213 years ago
FranceFRUnavailableOct 7, 20203 years ago
GabonGAUnavailableJun 30, 20223 years ago
GeorgiaGEUnavailableSep 1, 20242 years ago
GhanaGHUnavailableFeb 9, 20224 years ago
GreeceGRUnavailableAug 29, 20213 years ago
GrenadaGDUnavailableMar 3, 20213 years ago
GuatemalaGTUnavailableApr 23, 20212 years ago
GuyanaGYUnavailableMar 16, 20212 years ago
HondurasHNUnavailableMar 4, 20205 days ago
Hong KongHKUnavailableOct 12, 20203 years ago
IndonesiaIDUnavailableDec 20, 20203 years ago
IrelandIEUnavailableMay 11, 202516 months ago
ItalyITUnavailableMar 7, 20243 years ago
JamaicaJMUnavailableApr 26, 20212 years ago
JordanJOUnavailableAug 19, 20212 years ago
KazakhstanKZUnavailableMar 26, 20212 years ago
KyrgyzstanKGUnavailableMar 21, 20233 years ago
LaosLAUnavailableNov 17, 20217 months ago
LebanonLBUnavailableOct 8, 20203 years ago
LiberiaLRUnavailableAug 11, 202114 months ago
LuxembourgLUUnavailableJun 19, 20213 years ago
MacaoMOUnavailableSep 29, 20242 years ago
MadagascarMGUnavailableApr 7, 20214 years ago
MalawiMWUnavailableDec 12, 20203 years ago
MaldivesMVUnavailableDec 31, 20233 years ago
MaliMLUnavailableSep 2, 20214 years ago
MaltaMTUnavailableDec 28, 20213 years ago
MauritiusMUUnavailableJun 19, 20224 years ago
MexicoMXUnavailableFeb 21, 20214 years ago
MicronesiaFMUnavailableJul 8, 20224 years ago
MoldovaMDUnavailableMay 17, 20214 years ago
MongoliaMNUnavailableJun 28, 20213 years ago
MontenegroMEUnavailableJul 1, 20233 years ago
MozambiqueMZUnavailableMar 15, 20213 years ago
NauruNRUnavailableJun 22, 20245 days ago
NepalNPUnavailableMar 8, 20212 years ago
NicaraguaNIUnavailableSep 2, 20213 years ago
NigerNEUnavailableMay 17, 20212 years ago
NigeriaNGUnavailableMay 12, 20214 years ago
North MacedoniaMKUnavailableSep 14, 202238 days ago
NorwayNOUnavailableDec 18, 20205 days ago
PalauPWUnavailableDec 12, 20203 years ago
PanamaPAUnavailableFeb 21, 20213 years ago
Papua New GuineaPGUnavailableAug 19, 20213 years ago
ParaguayPYUnavailableMay 10, 20264 months ago
PeruPEUnavailableJul 18, 20213 years ago
PhilippinesPHUnavailableMar 30, 20221 year ago
PolandPLUnavailableMar 12, 20212 years ago
PortugalPTUnavailableMar 26, 202110 months ago
QatarQAUnavailableNov 14, 20242 years ago
Republic of the CongoCGUnavailableMar 9, 20214 years ago
RomaniaROUnavailableMar 4, 202038 days ago
RussiaRUUnavailableMar 13, 20222 years ago
RwandaRWUnavailableAug 25, 20224 years ago
São Tomé & PríncipeSTUnavailableDec 21, 20213 years ago
Saudi ArabiaSAUnavailableMar 16, 20213 years ago
SenegalSNUnavailableDec 6, 20204 years ago
SeychellesSCUnavailableMar 4, 20203 years ago
Sierra LeoneSLUnavailableMar 28, 20214 years ago
SingaporeSGUnavailableJul 25, 20242 years ago
SlovakiaSKUnavailableNov 5, 20233 years ago
SloveniaSIUnavailableApr 23, 20214 years ago
Solomon IslandsSBUnavailableMar 12, 20212 years ago
South AfricaZAUnavailableNov 27, 20204 months ago
South KoreaKRUnavailableDec 14, 20222 years ago
Sri LankaLKUnavailableApr 4, 20222 years ago
St. Kitts & NevisKNUnavailableMay 24, 20214 years ago
St. LuciaLCUnavailableOct 16, 20212 years ago
St. Vincent & GrenadinesVCUnavailableJun 28, 20212 years ago
SwedenSEUnavailableDec 20, 20203 years ago
TaiwanTWUnavailableApr 26, 20224 years ago
TajikistanTJUnavailableJan 12, 20223 years ago
TanzaniaTZUnavailableMay 24, 20214 years ago
ThailandTHUnavailableOct 21, 20202 years ago
TongaTOUnavailableJul 16, 20224 years ago
Trinidad & TobagoTTUnavailableMar 9, 20214 years ago
TunisiaTNUnavailableOct 21, 20202 years ago
TürkiyeTRUnavailableApr 5, 20232 years ago
TurkmenistanTMUnavailableDec 12, 20203 months ago
Turks & Caicos IslandsTCUnavailableFeb 4, 20243 years ago
UkraineUAUnavailableNov 13, 20202 years ago
United Arab EmiratesAEUnavailableDec 14, 20225 days ago
United KingdomGBUnavailableMar 19, 20234 years ago
United StatesUSUnavailableMar 4, 20205 days ago
UzbekistanUZUnavailableFeb 9, 20223 years ago
VenezuelaVEUnavailableJul 20, 20218 months ago
VietnamVNUnavailableMay 17, 20218 months ago
YemenYEUnavailableJun 16, 20214 years ago
ZimbabweZWUnavailableOct 7, 20202 months ago
AlbaniaALNot tested0
BelarusBYNot tested0
BelgiumBENot tested0
BermudaBMNot tested0
Bosnia & HerzegovinaBANot tested0
BrazilBRNot tested0
CambodiaKHNot tested0
Cayman IslandsKYNot tested0
CroatiaHRNot tested0
CzechiaCZNot tested0
FijiFJNot tested0
GambiaGMNot tested0
GermanyDENot tested0
Guinea-BissauGWNot tested0
HungaryHUNot tested0
IcelandISNot tested0
IndiaINNot tested0
IraqIQNot tested0
IsraelILNot tested0
JapanJPNot tested0
KenyaKENot tested0
KosovoXKNot tested0
KuwaitKWNot tested0
LatviaLVNot tested0
LibyaLYNot tested0
LithuaniaLTNot tested0
MalaysiaMYNot tested0
MauritaniaMRNot tested0
MontserratMSNot tested0
MoroccoMANot tested0
Myanmar (Burma)MMNot tested0
NamibiaNANot tested0
NetherlandsNLNot tested0
New ZealandNZNot tested0
OmanOMNot tested0
PakistanPKNot tested0
SerbiaRSNot tested0
SpainESNot tested0
SurinameSRNot tested0
SwitzerlandCHNot tested0
UgandaUGNot tested0
UruguayUYNot tested0
VanuatuVUNot tested0
ZambiaZMNot tested0

Testing asks Apple whether it will sell this app in that storefront, right now, by the same method the crawler has used since 2019. Your browser asks Apple directly, so the answer describes what Apple serves your connection — and if your browser cannot reach Apple at all, we ask on your behalf and say so. The result is a link: open it to see Apple's own answer and check ours. Readings are added to the record above; roughly a quarter of the readings taken each day come from people testing.

How we test

Availability is checked against Apple's own catalog servers for every storefront, the same way the App Store app asks. "Unavailable" means Apple's servers say the app cannot be offered in that country — it does not say who asked for the removal. Removals initiated by the developer and removals demanded by governments look the same from outside; the history and context on this page are how we tell them apart.