diff --git a/src/analyze_stats.py b/src/analyze_stats.py
index ee317ad..ba032c4 100755
--- a/src/analyze_stats.py
+++ b/src/analyze_stats.py
@@ -56,6 +56,26 @@ def eval_analyze():
     print('')
 
 
+def write_temporary_lists():
+    one = mylib.path_data('_lists', 'groupby_ios-study-os14.json')
+    two = mylib.path_data('_lists', 'list_ios-study-os14.json')
+    mylib.json_write(one, {
+        "name": "iOS 14 Study: Major OS Update",
+        "desc": "Compares 75 randomly selected apps before and after iOS update.",
+        "groups": [
+        {
+        "name": "iOS 13",
+        "apps": ["com.amazon.AmazonDE", "com.innersloth.amongus", "ca.gc.hcsc.canada.covid19", "com.instructure.icanvas", "mobi.gameguru.fruitsurgeon", "com.google.GoogleMobile", "com.google.chrome.ios", "com.google.Classroom", "com.burbn.instagram", "com.mcdonalds.mobileapp", "com.microsoft.skype.teams", "com.netflix.Netflix", "com.yourcompany.PPClient", "com.randonautica.app", "com.toyopagroup.picaboo", "com.casual.stairwaytoheaven", "com.tmobile.nameid", "com.burbn.threads", "com.zhiliaoapp.musically", "com.triller.projectx", "com.atebits.Tweetie2", "com.ubercab.UberEats", "net.whatsapp.WhatsApp", "com.google.ios.youtube", "com.zello.client.main", "com.apm2studio.runawaychallenge", "com.adidas.app", "com.booking.BookingApp", "com.braindom", "es.aeat.pin24h", "de.rki.coronawarnapp", "com.Atinon.PassOver", "com.greeneking.orderandpay", "com.ingka.ikea.app", "it.ministerodellasalute.immuni", "it.pagopa.app.io", "fr.izly.izlyiphone", "lagamerie.mmv", "au.com.menulog.m", "com.apalonapps.radarfree", "it.poste.postebuy2", "com.neocortext.doublicatapp", "com.Celltop.SpiralRoll", "com.spotify.client", "com.qsdhbdft.stackblocks", "com.redforcegames.stack.colors", "ph.telegra.Telegraph", "com.eightsec.TriviaIO", "com.watched.play", "it.wind.mywind", "com.alipay.iphoneclient", "jp.go.mhlw.covid19radar", "au.gov.health.covidsafe", "com.AnkaStudios.DriveThru3D", "ru.mail.mail", "com.phone.lock", "com.magictouch.xfollowers", "video.like", "jp.naver.line", "com.cg.moneybuster", "com.tencent.mqq", "zzkko.com.ZZKKO", "com.viber", "com.vk.vkclient", "com.waze.iphone", "com.tencent.xin", "icacacat.wobble.man.upstairs", "ru.avito.app", "ru.city-mobil.taxi", "com.yueyou.cyreader", "cn.gov.tax.its", "jp.jmty.Jmty", "com.siwuai.duapp", "com.huaxiaozhu.rider", "com.autonavi.amap"]
+        }, {
+        "name": "iOS 14",
+        "apps": ["com.amazon.AmazonDE.2", "com.innersloth.amongus.2", "ca.gc.hcsc.canada.covid19.2", "com.instructure.icanvas.2", "mobi.gameguru.fruitsurgeon.2", "com.google.GoogleMobile.2", "com.google.chrome.ios.2", "com.google.Classroom.2", "com.burbn.instagram.2", "com.mcdonalds.mobileapp.2", "com.microsoft.skype.teams.2", "com.netflix.Netflix.2", "com.yourcompany.PPClient.2", "com.randonautica.app.2", "com.toyopagroup.picaboo.2", "com.casual.stairwaytoheaven.2", "com.tmobile.nameid.2", "com.burbn.threads.2", "com.zhiliaoapp.musically.2", "com.triller.projectx.2", "com.atebits.Tweetie2.2", "com.ubercab.UberEats.2", "net.whatsapp.WhatsApp.2", "com.google.ios.youtube.2", "com.zello.client.main.2", "com.apm2studio.runawaychallenge.2", "com.adidas.app.2", "com.booking.BookingApp.2", "com.braindom.2", "es.aeat.pin24h.2", "de.rki.coronawarnapp.2", "com.Atinon.PassOver.2", "com.greeneking.orderandpay.2", "com.ingka.ikea.app.2", "it.ministerodellasalute.immuni.2", "it.pagopa.app.io.2", "fr.izly.izlyiphone.2", "lagamerie.mmv.2", "au.com.menulog.m.2", "com.apalonapps.radarfree.2", "it.poste.postebuy2.2", "com.neocortext.doublicatapp.2", "com.Celltop.SpiralRoll.2", "com.spotify.client.2", "com.qsdhbdft.stackblocks.2", "com.redforcegames.stack.colors.2", "ph.telegra.Telegraph.2", "com.eightsec.TriviaIO.2", "com.watched.play.2", "it.wind.mywind.2", "com.alipay.iphoneclient.2", "jp.go.mhlw.covid19radar.2", "au.gov.health.covidsafe.2", "com.AnkaStudios.DriveThru3D.2", "ru.mail.mail.2", "com.phone.lock.2", "com.magictouch.xfollowers.2", "video.like.2", "jp.naver.line.2", "com.cg.moneybuster.2", "com.tencent.mqq.2", "zzkko.com.ZZKKO.2", "com.viber.2", "com.vk.vkclient.2", "com.waze.iphone.2", "com.tencent.xin.2", "icacacat.wobble.man.upstairs.2", "ru.avito.app.2", "ru.city-mobil.taxi.2", "com.yueyou.cyreader.2", "cn.gov.tax.its.2", "jp.jmty.Jmty.2", "com.siwuai.duapp.2", "com.huaxiaozhu.rider.2", "com.autonavi.amap.2"]
+        }]}, pretty=True)
+    mylib.json_write(two, {
+        "name": "iOS 14 Study: Selected Apps",
+        "apps": ["com.google.chrome.ios", "com.google.chrome.ios.2", "com.ingka.ikea.app", "com.ingka.ikea.app.2", "com.microsoft.skype.teams", "com.microsoft.skype.teams.2", "com.Atinon.PassOver", "com.Atinon.PassOver.2", "com.Celltop.SpiralRoll", "com.Celltop.SpiralRoll.2", "com.redforcegames.stack.colors", "com.redforcegames.stack.colors.2"]
+        }, pretty=True)
+
+
 def move_ios14():
     # delete unrelated data
     for bid in mylib.appids_in_data(['*']):
@@ -100,7 +120,7 @@ def move_ios14():
                     mylib.mv(fname, mylib.path_add(diir, '2', fiil))
             except KeyError:
                 pass
-
+    write_temporary_lists()
 
 # move_ios14()
 eval_analyze()