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Von der Idee 

zur praxistauglichen 

Watch App
Ein Erfahrungsbericht
Überall App Day, 16. Juni 2016Daniel Estermann, appculture AG
Was macht eine Golf App?
Eisen 7: 140m
Eisen 8: 130m
Eisen 9: 120m
Distanz
je nach
Schläger
Distanz
je nach
Schläger
Loch 17

TPC Sawgrass

Ponte Vedra Beach, Florida
Laser
https://www.youtube.com/watch?v=t93f3F9Fln4
Course
Planner
138
147
122
125
140
114
95
108
82
83
94
68
Laser
Front
Center
Back
• Passionierter Golfspieler
• Entwickler Golf App „tigerline“
• CEO & Gründer von appculture
Daniel Estermann
www.tigerlineapp.com
1000 

Golf Apps
• Distanzmesser
• Course Guide
• Scorekarte & Statistiken
1. Watch App starten
2. iPhone App starten
3. „Golf Spielen“
4. Golfclub wählen
5. Golfplatz wählen
6. Abschlag wählen
7. Spieler hinzufügen
8. Startloch wählen
9. iPhone versorgen
10.Golf spielen!
Geht es 

wirklich nicht 

einfacher?
Geht es 

wirklich nicht 

einfacher?
Idee → App → $$$
Vorgehen
Spec Design Build
Spec
Design
Build
Idee → App → !
BuildEvaluate
User
Research
User-Centered Design
Zielpublikum:
• Männlich, 40-60 jährig
• Kein Digital Native
• Weitsichtig?
• t
Kontext
• Sonnenlicht
• Bedienung im Gehen
• Wenige Sekunden Zeit
Benutzerbedürfnisse
✔ Distanz zum Grün
✔ Gut lesbar
✘ Distanz zu Hindernissen
✘ Score
Vision
„So einfach wie 

eine GPS Golf-Uhr“
• einfach
• schnell
• ohne iPhone
Idee → Prototyp → Prototyp → Prototyp → App
Fake Real
• Whiteboard oder Papier
• Originalgrösse
• Dicker Filzstift
• Varianten
• Paper Prototype
Fake Real
Scribble!
Fake Real
Play Golf
Welcome to
Golf Club
Sempachersee
TIGERLINE
10:09
113
128
95
Par 3 II16
Lakeside 10:09
6 Loch
Oberkirch
6
Lakeside
Sempachersee
18
Woodside
Sempachersee
18
10:09Courses
113
128
95
Par 3 II16
Lakeside 10:09
Storyboard
Click-barer Prototyp
• Marvel / Invision
• Powerpoint / Keynote
Früh 

auf Zielgerät

testen
…noch vor dem Programmieren!
Automatische
Lochwahl
Manuelle Lochwahl
10:09
113
95
128
Lakeside
1
PAR 4
324 M
IDX 17
10:09
113
95
128
Lakeside
1
PAR 4
324 M
IDX 17
2
Interaction Design: Lochwahl
113
128
95
Par 3 II16
Lakeside 10:0910:09
113
95
128
Lakeside
1
PAR 4
324 M
IDX 17
Cancel
Par 3 173 m
Par 4 385m2
3
Par 4 325m1
Auswahlliste Paging Krone
Fake Real
Nativer Prototyp
• Separates Xcode-Projekt
• Interface Builder
• Nur wenige Zeilen Code
Fazit: Unbrauchbar!
• Digitale Krone sehr empfindlich

• Bedingt ruhige Hand und 

konstante visuelle Kontrolle

• Im Gehen praktisch unmöglich
Probieren geht
über Studieren!
Das Neuste ist nicht immer das Beste.
Fake Real
Vertikaler Prototyp
• Proof of Concept:

Kontinuierliche 

GPS-Updates
• Datentransfer 

Phone ⟷ Watch
• Keine Platzdaten
WatchKit = Low-Level API
• Austausch von 

serialisierten Objekten
• Entwicklung einer
Kommunikations-Schicht
• 1 Woche
Entwicklungsaufwand
• Tests bei der Fahrt zur Arbeit
iOS App
iOS watchOS
Watch App
GPS
Mit dem Kern
beginnen!
…und so das Risiko minimieren!
Ziel
erreicht?
„So einfach wie 

eine GPS Golf-Uhr“
✔ einfach
✔ schnell genug
✔ ohne iPhoneFr. 350.-Fr. 230.-
✔
Ein kleines Detail
ging vergessen…
10:09
113
95
128
Lakeside
1
PAR 4
324 M
IDX 17113
95
128
Lakeside
1
PAR 4
324 M
IDX 17
…die Zeit!
Umstellung Storyboard
Club Platz
123
modal
push
Bisher
Club Platz
123
modal
Neu
14:15
Umstellung Storyboard
Club Platz
123
modal
Neu
14:15
• Neuer Startscreen:

Zuletzt gespielter Platz
• App noch einfacher!
• Aufwand: 3 Tage
Im
realen Kontext
testen
z.B. mit langsamer Verbindung.

Oder im Einkaufscenter mit WiFi-Login.
Aufwand
2
18
Prototyp

„Digital Crown“
3
Beta1 Umstellung

Storyboard
3
3
Bugfixes,

Submission
3
1
Entwicklung
Testing
26
10
Total
3
• Watch App 

live seit 25. Mai 2016
• Fast 10% der tigerline-Benutzer
haben eine Apple Watch!
• Früh auf Zielgerät testen
• Mit dem Kern beginnen!
• Probieren geht über Studieren!
• Im realen Kontext testen
BuildEvaluate
User
Research
User-Centered Design
Vision
Fake Real
Watch Apps: Awareness
Quelle: Luke Wroblewski
• Redesigning the Apple Watch UI: http://www.lukew.com/ff/entry.asp?1951
• On the wrist: http://www.lukew.com/ff/entry.asp?1943
Watch Apps: Prioritäten
1.Notifications
2.Complication
3.Glance
4.App
Awareness
Golf is a game
whose aim is to hit
a very small ball
into an even smaller hole,
with weapons
singularly ill-designed
for the purpose.
“
Sir Winston Churchill
Welche
App-Ideen
hast Du?
Ausgezeichnete Apps zu 

vernünftigen Preisen
daniel.estermann@appculture.com
twitter.com/daniestermann
twitter.com/appculture_ag
appculture
„Fake it till you make it“
Apple WWDC 2014 Video

https://developer.apple.com/videos/play/wwdc2014/223/
What is the Apple Watch good for?
http://martiancraft.com/blog/2016/04/apple-watch-good/
WWDC 2016 Sessions on watchOS 3
https://developer.apple.com/videos/wwdc2016/
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Von der Idee zur praxistauglichen Watch App: Ein Erfahrungsbericht