diff --git a/app/src/assets/scss/main/_mobile.scss b/app/src/assets/scss/main/_mobile.scss
index bb86ff8c6..6fc0254ce 100644
--- a/app/src/assets/scss/main/_mobile.scss
+++ b/app/src/assets/scss/main/_mobile.scss
@@ -29,6 +29,11 @@
       &:hover {
         background-color: transparent;
       }
+
+      svg, img {
+        height: 20px;
+        width: 20px;
+      }
     }
 
     &__graphic {
diff --git a/kernel/av/value.go b/kernel/av/value.go
index fe3aaed85..ec3cb09d3 100644
--- a/kernel/av/value.go
+++ b/kernel/av/value.go
@@ -899,6 +899,10 @@ func (r *ValueRollup) calcContents(calc *RollupCalc, destKey *Key) {
 		for _, v := range r.Contents {
 			if KeyTypeNumber == v.Type && nil != v.Number && v.Number.IsNotEmpty {
 				sum += v.Number.Content
+			} else {
+				content := v.String(false)
+				f, _ := util.Convert2Float(content)
+				sum += f
 			}
 		}
 		r.Contents = []*Value{{Type: KeyTypeNumber, Number: NewFormattedValueNumber(sum, destKey.NumberFormat)}}
@@ -909,6 +913,11 @@ func (r *ValueRollup) calcContents(calc *RollupCalc, destKey *Key) {
 			if KeyTypeNumber == v.Type && nil != v.Number && v.Number.IsNotEmpty {
 				sum += v.Number.Content
 				count++
+			} else {
+				content := v.String(false)
+				f, _ := util.Convert2Float(content)
+				sum += f
+				count++
 			}
 		}
 		if 0 < count {
@@ -919,6 +928,10 @@ func (r *ValueRollup) calcContents(calc *RollupCalc, destKey *Key) {
 		for _, v := range r.Contents {
 			if KeyTypeNumber == v.Type && nil != v.Number && v.Number.IsNotEmpty {
 				numbers = append(numbers, v.Number.Content)
+			} else {
+				content := v.String(false)
+				f, _ := util.Convert2Float(content)
+				numbers = append(numbers, f)
 			}
 		}
 		sort.Float64s(numbers)
@@ -936,6 +949,12 @@ func (r *ValueRollup) calcContents(calc *RollupCalc, destKey *Key) {
 				if v.Number.Content < minVal {
 					minVal = v.Number.Content
 				}
+			} else {
+				content := v.String(false)
+				f, _ := util.Convert2Float(content)
+				if f < minVal {
+					minVal = f
+				}
 			}
 		}
 		if math.MaxFloat64 != minVal {
@@ -948,6 +967,12 @@ func (r *ValueRollup) calcContents(calc *RollupCalc, destKey *Key) {
 				if v.Number.Content > maxVal {
 					maxVal = v.Number.Content
 				}
+			} else {
+				content := v.String(false)
+				f, _ := util.Convert2Float(content)
+				if f > maxVal {
+					maxVal = f
+				}
 			}
 		}
 		if -math.MaxFloat64 != maxVal {
@@ -1004,6 +1029,15 @@ func (r *ValueRollup) calcContents(calc *RollupCalc, destKey *Key) {
 					isNotTime = true
 					hasEndDate = false
 				}
+			} else {
+				content := v.String(false)
+				f, _ := util.Convert2Float(content)
+				if f < minVal {
+					minVal = f
+				}
+				if f > maxVal {
+					maxVal = f
+				}
 			}
 		}
 
@@ -1025,6 +1059,10 @@ func (r *ValueRollup) calcContents(calc *RollupCalc, destKey *Key) {
 			if 0 != earliest && 0 != latest {
 				r.Contents = []*Value{{Type: KeyTypeCreated, Created: NewFormattedValueCreated(earliest, latest, CreatedFormatDuration)}}
 			}
+		default:
+			if math.MaxFloat64 != minVal && -math.MaxFloat64 != maxVal {
+				r.Contents = []*Value{{Type: KeyTypeNumber, Number: NewFormattedValueNumber(maxVal-minVal, destKey.NumberFormat)}}
+			}
 		}
 	case CalcOperatorEarliest:
 		if 1 > len(r.Contents) {
diff --git a/kernel/filesys/template.go b/kernel/filesys/template.go
index 3184da077..2e22f416e 100644
--- a/kernel/filesys/template.go
+++ b/kernel/filesys/template.go
@@ -46,6 +46,7 @@ func BuiltInTemplateFuncs() (ret template.FuncMap) {
 	ret["ISOWeek"] = util.ISOWeek
 	ret["ISOYear"] = util.ISOYear
 	ret["ISOMonth"] = util.ISOMonth
+	ret["ISOWeekDate"] = util.ISOWeekDate
 	ret["pow"] = pow
 	ret["powf"] = powf
 	ret["log"] = log
diff --git a/kernel/util/time.go b/kernel/util/time.go
index b13186516..933e88084 100644
--- a/kernel/util/time.go
+++ b/kernel/util/time.go
@@ -80,6 +80,19 @@ func ISOMonth(date time.Time) int {
 	return int(monday.Month())
 }
 
+// ISOWeekDate returns the date of the specified day of the week in the ISO 8601 week of date.
+// day: Monday=1, ..., Sunday=7.
+func ISOWeekDate(date time.Time, day int) time.Time {
+	weekday := int(date.Weekday())
+	if weekday == 0 {
+		weekday = 7
+	}
+
+	daysToMonday := weekday - 1
+	monday := date.AddDate(0, 0, -daysToMonday)
+	return monday.AddDate(0, 0, day-1)
+}
+
 func Millisecond2Time(t int64) time.Time {
 	sec := t / 1000
 	msec := t % 1000