diff --git a/cmd/clitest/main.go b/cmd/clitest/main.go
index e3f5f72..24c3b01 100644
--- a/cmd/clitest/main.go
+++ b/cmd/clitest/main.go
@@ -64,6 +64,21 @@ func main() {
 		like = append(like, ledger.LikeAfter(*likeAfter))
 
 		foo := func(w http.ResponseWriter, r *http.Request) {
+			switch r.URL.Path {
+			case "/bal", "/reg":
+			case "/ui":
+				f, err := os.Open("./index.html")
+				if err != nil {
+					panic(err)
+				}
+				defer f.Close()
+				io.Copy(w, f)
+				return
+			default:
+				http.NotFound(w, r)
+				return
+			}
+
 			foolike := make(ledger.Likes, 0)
 			for _, v := range r.URL.Query()["likeName"] {
 				foolike = append(foolike, ledger.LikeName(v))
@@ -79,6 +94,7 @@ func main() {
 			}
 
 			register := deltas.Like(foolike...).Register()
+			predicted := make(ledger.Register)
 			bpis := maps.Clone(bpis)
 
 			// MODIFIERS
@@ -103,8 +119,8 @@ func main() {
 						panic(k)
 					}
 				}
-				predicted := prediction.Predict(register, window)
-				register.PushAll(predicted) // TODO draw line separately
+				predicted = prediction.Predict(register, window)
+
 				for _, currencyRate := range r.URL.Query()["predictFixedGrowth"] {
 					currency := strings.Split(currencyRate, "=")[0]
 					rate, err := strconv.ParseFloat(strings.Split(currencyRate, "=")[1], 64)
@@ -117,94 +133,92 @@ func main() {
 					}
 				}
 			}
+
 			if r.URL.Query().Get("bpi") != "" {
 				register = register.WithBPIs(bpis)
+				predicted = predicted.WithBPIs(bpis)
 			}
 			if zoomStart, err := time.ParseInLocation("2006-01", r.URL.Query().Get("zoomStart"), time.Local); err == nil {
 				register = register.Between(zoomStart, time.Now().Add(time.Hour*24*365*100))
+				predicted = predicted.Between(zoomStart, time.Now().Add(time.Hour*24*365*100))
 			}
 			// /MODIFIERS
 
-			nameCurrencyDateValue := map[string]map[ledger.Currency]map[string]float64{}
-			for date, balances := range register {
-				for name, balance := range balances {
-					for currency, value := range balance {
-						if _, ok := nameCurrencyDateValue[name]; !ok {
-							nameCurrencyDateValue[name] = make(map[ledger.Currency]map[string]float64)
-						}
-						if _, ok := nameCurrencyDateValue[name][currency]; !ok {
-							nameCurrencyDateValue[name][currency] = make(map[string]float64)
-						}
-						nameCurrencyDateValue[name][currency][date] += value
-					}
-				}
-			}
-
-			chart := NewChart("line")
-			if v := r.URL.Query().Get("chart"); v != "" {
-				chart = NewChart(v)
-			}
-
-			dates := register.Dates()
-			names := register.Names()
-			chart.AddX(dates)
-
-			switch r.URL.Path {
-			default:
-				http.NotFound(w, r)
-				return
-			case "/ui":
-				f, err := os.Open("./index.html")
-				if err != nil {
-					panic(err)
-				}
-				defer f.Close()
-				io.Copy(w, f)
-				return
-			case "/bal":
-				for _, name := range names {
-					currencyDateValue := nameCurrencyDateValue[name]
-					for currency, dateValue := range currencyDateValue {
-						series := make([]int, len(dates))
-						for i := range dates {
-							var lastValue float64
-							for j := range dates[:i+1] {
-								if newLastValue, ok := dateValue[dates[j]]; ok {
-									lastValue = newLastValue
-								}
+			toChart := func(cumulative bool, display string, register ledger.Register) Chart {
+				nameCurrencyDateValue := map[string]map[ledger.Currency]map[string]float64{}
+				for date, balances := range register {
+					for name, balance := range balances {
+						for currency, value := range balance {
+							if _, ok := nameCurrencyDateValue[name]; !ok {
+								nameCurrencyDateValue[name] = make(map[ledger.Currency]map[string]float64)
 							}
-							series[i] = int(lastValue)
-						}
-						key := fmt.Sprintf("%s (%s)", name, currency)
-						if slices.Min(series) != 0 || slices.Max(series) != 0 {
-							chart.AddY(key, series)
-						}
-					}
-				}
-			case "/reg":
-				for _, name := range names {
-					currencyDateValue := nameCurrencyDateValue[name]
-					for currency, dateValue := range currencyDateValue {
-						series := make([]int, len(dates))
-						for i := range dates {
-							var prevValue float64
-							var lastValue float64
-							for j := range dates[:i+1] {
-								if newLastValue, ok := dateValue[dates[j]]; ok {
-									prevValue = lastValue
-									lastValue = newLastValue
-								}
+							if _, ok := nameCurrencyDateValue[name][currency]; !ok {
+								nameCurrencyDateValue[name][currency] = make(map[string]float64)
 							}
-							series[i] = int(lastValue - prevValue)
-						}
-						key := fmt.Sprintf("%s (%s)", name, currency)
-						if slices.Min(series) != 0 || slices.Max(series) != 0 {
-							chart.AddY(key, series)
+							nameCurrencyDateValue[name][currency][date] += value
 						}
 					}
 				}
+
+				chart := NewChart("line")
+				if v := display; v != "" {
+					chart = NewChart(v)
+				}
+
+				dates := register.Dates()
+				names := register.Names()
+				chart.AddX(dates)
+
+				if cumulative {
+					for _, name := range names {
+						currencyDateValue := nameCurrencyDateValue[name]
+						for currency, dateValue := range currencyDateValue {
+							series := make([]int, len(dates))
+							for i := range dates {
+								var lastValue float64
+								for j := range dates[:i+1] {
+									if newLastValue, ok := dateValue[dates[j]]; ok {
+										lastValue = newLastValue
+									}
+								}
+								series[i] = int(lastValue)
+							}
+							key := fmt.Sprintf("%s (%s)", name, currency)
+							if slices.Min(series) != 0 || slices.Max(series) != 0 {
+								chart.AddY(key, series)
+							}
+						}
+					}
+				} else {
+					for _, name := range names {
+						currencyDateValue := nameCurrencyDateValue[name]
+						for currency, dateValue := range currencyDateValue {
+							series := make([]int, len(dates))
+							for i := range dates {
+								var prevValue float64
+								var lastValue float64
+								for j := range dates[:i+1] {
+									if newLastValue, ok := dateValue[dates[j]]; ok {
+										prevValue = lastValue
+										lastValue = newLastValue
+									}
+								}
+								series[i] = int(lastValue - prevValue)
+							}
+							key := fmt.Sprintf("%s (%s)", name, currency)
+							if slices.Min(series) != 0 || slices.Max(series) != 0 {
+								chart.AddY(key, series)
+							}
+						}
+					}
+				}
+				return chart
 			}
-			if err := chart.Render(w); err != nil {
+			primary := toChart(r.URL.Path == "/bal", r.URL.Query().Get("chart"), register)
+			if len(predicted) > 0 {
+				primary.Overlap(toChart(r.URL.Path == "/bal", "line", predicted))
+			}
+			if err := primary.Render(w); err != nil {
 				panic(err)
 			}
 		}
@@ -277,6 +291,7 @@ type Chart interface {
 	AddX(interface{})
 	AddY(string, []int)
 	Render(io.Writer) error
+	Overlap(Chart)
 }
 
 func NewChart(name string) Chart {
@@ -312,6 +327,14 @@ func (line Line) AddY(name string, v []int) {
 	line.AddSeries(name, y)
 }
 
+func (line Line) Overlap(other Chart) {
+	overlapper, ok := other.(charts.Overlaper)
+	if !ok {
+		panic(fmt.Sprintf("cannot overlap %T", other))
+	}
+	line.Line.Overlap(overlapper)
+}
+
 type Bar struct {
 	*charts.Bar
 }
@@ -332,6 +355,14 @@ func (bar Bar) AddY(name string, v []int) {
 	bar.AddSeries(name, y)
 }
 
+func (bar Bar) Overlap(other Chart) {
+	overlapper, ok := other.(charts.Overlaper)
+	if !ok {
+		panic(fmt.Sprintf("cannot overlap %T", other))
+	}
+	bar.Bar.Overlap(overlapper)
+}
+
 type Stack struct {
 	Bar
 }