def index(request):
    latest_apps_list = App.objects.all().exclude(approved=False).order_by('name')[:20]
    app_images = Image.objects.filter(app__in=latest_apps_list).order_by('app__name')[:20]
    t = loader.get_template('apps/index.html')
    c = Context({
        'latest_apps_list': latest_apps_list,
        'app_images': app_images
    })
    return HttpResponse(t.render(c))

{% for app in latest_apps_list %}

...{{ app.name }}

{% endfor %}

class App(models.Model):
    name = models.CharField(max_length=200)
    # ...

class Image(models.Model):
   app = models.ForeignKey(App)
   image = models.ImageField(upload_to = "apps")

class AppAdmin(admin.ModelAdmin):
   fieldsets = [
      ('Basic', {'fields':['name','desc','price','approved','image']}),
      ('Author',        {'fields':['docs_url', 'preview_url']}),
   ]
   list_display = ('name', 'desc', 'price', 'approved')


admin.site.register(App, AppAdmin)

class App(models.Model):
    name = models.CharField(max_length=200)
    # ...
    image = models.ImageField(upload_to = "apps")

def index(request):
    latest_apps_list = App.objects.all().exclude(approved=False).order_by('name')[:20]
    t = loader.get_template('apps/index.html')
    c = Context({
        'latest_apps_list': latest_apps_list,
    })
    return HttpResponse(t.render(c))

def index(request):
    latest_apps_list = list(App.objects.all().exclude(approved=False).order_by('name')[:20])
    app_images = Image.objects.filter(app__in=latest_apps_list).order_by('app__name')[:20]
    t = loader.get_template('apps/index.html')
    c = Context({
        'zipped_app_list': zip(latest_apps_list, list(app_images))
    })
    return HttpResponse(t.render(c))

{% for app, image in zipped_app_list %}
    {{ app }}
    {{ image}}
{% endfor %}