Installation!

1) extract app.lha to (for example) SYS:

2) add assign to s:user-startup: 
   Assign <>NIL: APP: SYS:app

3) restart Amiga

4) type in cli/shell: 
   execute app:app upgrade
   
Now You have latest APP version!

Usage:

app install tanksfurry - tanksfurry is example packet name
app install tanksfurry play - for instant run!
app run tanksfurry - run if installed first
app addlib medplayer.library - get a library!
app clean - clean temporary data
app upgrade - upgrade APP to new version!
app list - list packets
app done - list downloaded and available for run packets
app search [game]
app search whdload
etc..

example:
app install asmone
- reqtools is required so it will be autodownloaded if you don't have!

app install benefactor play
- whdload is required so it will be autoinstalled if you don't have!

list of packets (app list - no need to do upgrade to see new packets!)

[util] pt23d (protracker) (music/edit)
[util] hippoplayer (music/play)
[util] snoopdos (util/moni)
[util] whdload (latest)
[util] kingcon (v1.3) (util/shell)
[util] sysinfo (v3.24)
[util] mui (v3.8)
[util] mui-classes (NList, Textinput, Popplaceholder)
[util] reqtools (v2.9a)
[util] bgui (v41.11)
[util] filemaster (v3.2 beta 3)
[util] xpk (v5.2a)
[util] magic64 (v1.81)
[util] asmone (v1.48)
[util] grunch (latest)
[util] mmulib (latest)
[util] amissl (v4.0)
[util] dopus5 (v5.91)
[util] mcp (v1.30)
[util] pt1210 (mk v1)
[util] unzip (v5.40)
[util] unlzx
[util] lha (v2.12)
[util] amirc (v3.6.2) (000/020)
[util] wget (v1.12)
[util] ibrowse (v2.4) (demo) (020+)
[util] makecd (v3.2b)
[util] magicmenu (v2.30) (000/020)
[util] xfdmaster (v1.38)
[util] virusz (III v1.02)
[util] xadmaster (v12.1a) (000/020)
[util] amath (v1.6.3)
[util] ade (GCC based Amiga Development Environment) (v2.95.3) (os3.1)

[game] maxknightxmas (hdd demo)
[game] franko (whdload)
[game] doman (whdload)
[game] benefactor (whdload)
[game] squeek (game/jump)
[game] tanksfurry (v1.2) (game/shooter)
[game] blackcrypt (whdload)
[game] boxxtrilogy (v1.0) (hd)

[intro] osc_retro_intro_2016

[demo] stateoftheart (by spaceballs) (hd version)
[demo] relic (by nerve axis) (020+) 

More on:

EAB: http://eab.abime.net/showthread.php?p=1140753
PPA: http://www.ppa.pl/forum/amiga/36295/app-program-do-autopobierania-i-instalacji-softwaru-z-internetu

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic]                  748    2175  34.4% -lh5- 0de5 Feb 13  1980 app/app
[generic]                61704   61704 100.0% -lh0- 3b16 Feb 12  1980 app/bin/installer
[generic]                52726   94020  56.1% -lh5- 63ba Mar 13  2006 app/bin/lha
[generic]                11892   21972  54.1% -lh5- ddff Nov 29  2000 app/bin/unlzx
[generic]               687162 1401232  49.0% -lh5- 97c0 Jul 12  2010 app/bin/wget
[generic]                98737  175140  56.4% -lh5- 6a4f Jan  1  1990 app/libs/ixemul.library
[generic]                 7752   15844  48.9% -lh5- 32d2 Jan  1  1990 app/libs/ixnet.library
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         7 files  920721 1772087  52.0%            Feb 19 11:39