, . . , . , .
, . -10 DAU, MAU, ARPU . , , , . . .
, , , , UX-.
.
1. ?
1) /: .
2) : .
2. :
1.
3. :
2.
4. :
3.
5. :
4.
6. :
6.
7. : . .
, , .
. SAAS , , . , , , . .
. , . - . , , . , , , , , .
. , , . , , DAU, MAU, retention, ARPU. , - , .
, - . , 3 , 3 5 , .
1.
, . . , . , - , .
, ? , . . . . , , , - ?
? , , , .
, (, ) . .
, , . . , ,
[21]. M. Lamas , , , . [1] , . , .
1. .
, ,
( / / ),
( , ). , .
, :
, fun,
, ,
, ,
,
,
,
,
,
,
,
.
. , .
:
: , .
: .
.
1. .
?
, , , . , , , , .
, , .
2.
, . 2 , . , . () . .
, . , . ? , . ? , , ?
2 :
1. .
2. .
1.
, , .
M. Lamas [1]:
1.
. . .
2.
. , , . .
3.
. , .
4.
. . .
5.
. , , . .
6.
. , , .
7.
, . . , .
8.
, , .
2. .
. ( , DAU, WAU, MAU, , stiky factor .).
2008 Forrester 4I [. 1].
(Involment). . , ..
(Interaction). . CTR, on-line , .
(Intimacy). , . , , , .
(Influence). , . , , .
AppLift Localytics : , (ASL). , , , 6 90 (2015 .). : 8 77 [2].
. , (2017) [9]. .
2 , .
1: usability- ux-.
, , . , , , , , , , .
: , ? , , -: , ? , ?
, 2017 [19].
. , . , , , . , , , .
2. .
. , , -.
, 2015 [16].
- Miniclip R. Vladimiro , () , . 2 : 3-4 6 , 1 , . , , . , , . , , : , .
, (, , ) , , .
1. : , . , .
2. - ( , , .).
3. , , , , . - .
2. .
2. .
?
, . : ? : , , . , ( ). , , . , .
: . ? , .
4.
, , , , . , . , - .
, , .
, L.C. Vieira . (2016), [12] :
,
,
.
, - (. 3).

3. L.C. Vieira . [12].
:
/ ,
/ ,
/ ,
/ .
( ), ( , ).
.
( 3). . , .
3: .
.

4. .
?
, , , , . , .
: , ? , , . , , .
4. .
4 , .
, , , . 4 .
1. .
. , . , . : , . - . , .
, 2013 [18].
, . , , , . , , . , [18].
2. .
- , ? , -?
, 2017 [10].
700 . Fitbit Charge HR .
: , , , , , , , , , , . , ( ).
, :
1) ,
2) ,
3) ,
4) ,
5) .
, , , , . , , . , , , , .
3. .
-, , 2017 , , - . , - . , .
, 2017 [8].
A.E. Whitehead . 578 . , - , .
4. .
, .
, 2015 [17].
. C , ( social ratio ). , . . retention 28- , , .
-. - . . , ( , ).
.

5. .
?
, , . , , - , . , / , . .
5. .
Jobs-to-be-done - , . , , . , 3 , , .
, , . , , .
Jobs-to-be-done , ,
. .
, . , , on-line .
, , 3 . : , . 4.
4. .
.
6. .
?
, , , , .
, . . . , . , .
. , : . , . , ( , , ). , , ( ). , , , . , , .
Jobs-to-be-done , , .
, , . , ? .
6. .
. , . , . , .
, , , , , , , . .
, , , . , .
. . - . - (, , ). , . , . - ?
- ?
, , , , , , . - . , , , .
off-line . , ( , , - , , Uber Booking , ).
. (
Rusbult, Drigotas, and Verette 1994). , , :
1) (, , ),
2) ,
3) ,
4) .
, , , , . , on-line , , , .
,
( ).
, , 2. 2 , A. Weston [11].
, , 2007.
, Baker et al. , , , Zombie Division, , (. 2).

2: Zombie Division (
)
, 2010 [20].
T. Bickmore - (. 3). . , , . , . .
, ( ). , , , , . , [20].

3: T. Bickmore [20].
: . .
, .

7. .
?
. , (, , , , ). , , . , , , . , . , . , . .
, , ( , )? , - -. .
, . .
7.
, , , . , .
In-app / Web-
. . , , .
,
[1]. , ( ). ( , ) Lifetime value ( , , , ).
, , 2012 [3].
J. Lehman , -. . . :
( , , ).
( , , ).
( , , , , ).
5. ( J. Lehman .).
, , , , , . , , , .
, 2017 [5].
A. Tarute . (, ) .
1. . , ?
2. . , , ?
3. . , - , , .
4. . , , ?
, , , . , , .
1. ( : , , , , , , .).
2. ( , , , ).
3. (, , (), , , ).
4. ( , ).
. 25 , 42.5% 57.5% . , , , .
27 (. , 4). , , . , 4 1 . , .
(61,3%) , (Facebook Messenger, Instagram, Viber, WhatsApp). , (Trafi, Busas Kaunas, Here WeGo Maps), (Swedbank, DNB bank, SEB bank), (Duolingo, Todoist, MyStudyLife) (e.g. Endomondo Sports tracker, Noom Walk, WaterDrink). 14,1% .
, . . .
: . , , , .
, 2013 [4].
Y. H. Kim (MoEN) (. 4).

8: Y. H. Kim .
, ( , , ) : , () ().
Y. H. Kim 3 :
(, , ),
(, , ),
( ).
: , , , , .
(. , 3). 297 (50,3% 49,3% ). , : [4].
, 2017 [13].
(. , 6). 750 (1635 ). , , . , , , , .
, . (. 9).

9. .
, 2015 [11].
. . push- , . 2 ( 29), , .
: 1) 2) ( ).
. , (. 10).
, 2017.
, .

10. , .
: , , . , , , .
, 2017 [6].
. . - , . , , . 9 3 . , , . 3 . , - : , . 8 .
, (, ). , (. 7). [6].

11. - .
, 2017 [7].
S. Asimakopoulos - . , .
:
on-line 4 (. , 5),
Healthcare Technology Self-efficacy (HTSE) 7- ( ),
, .
: 34 - Fitbit Jawbone. , 3 : , .
, .
, . ( , , ), . , -, - . , , . ( . - ).
, : - ? . .
, , , . , , .
, , , . , , . , , .
. , [1, 12, 13].
, 2017 [21].
, . , , : , Ergo VR Laboratory c Affdex SDK Unity Affectiva.
. , , , (. 12).

12. 2 .
?
, , . . . . - ? ? .
7. .
, . : . , .
, , . , ? .
: MVP ( ) . , .
6. .

.

13. .
?
. .
, :
1. ?
1) /: .
2) : .
2. :
1.
3. :
2.
4. :
3.
5. :
4.
6. :
6.
7. : .
, . .
1. Measuring user engagement / M. Lamas, H. OBrien, E. Yom-Tov. 2013.
.
2.
Media & Entertainment Apps: A World of Engagement [Infographic] / T. Sommer. 2015.
3.
Models of User Engagement / J.Lehmann [et al.] //Lecture Notes in Computer Science. 2012. Vol. 7379. P. 164175.
4. A study of mobile user engagement (MoEN): Engagement motivations, perceived value, satisfaction, and continued engagement intention / Y. H. Kim, D. J. Kim, K. Wachter // Decision Support Systems. 2013. 56. P. 361370.
5. Mobile Application Driven Consumer Engagement / A. Tarute, S. Nikou, R. Gatautis // Telematics and Informatics. 2017.
6.
How The Science of Human Behavior Change Offers The Secret to Long-Term Engagement / D. Ledger, D. McCaffrey. 2014.
7.
Motivation and User Engagement in Fitness Tracking: Heuristics for Mobile Healthcare Wearables / S. Asimakopoulos, G. Asimakopoulos, F. Spillers // Informatics. 2017,4(1), 5.
8. Mobile Technology Usage Mediates Gender Differences in Physical Activity / Whitehead, A.E. [et al.]// International Journal of Sport Psychology 2017.
9.
If You Let Them Build It, They Will Stay! An Empirical Study of Add-on Content and User Engagement / I. Kanat [et al.] // Hawaii International Conference on System Sciences. 2017.
10.
Exploring Compliance: Observations from a Large Scale Fitbit Study / L. Faust [et al.] //Proc. of Social Sens. 2017.
11.
Measurements of engagement in mobile behavioural interventions?/ A. Weston // Digital Health. 18 20 May 2015. 8 p.
12. Assessment of fun in interactive systems: A survey / L.C. Vieira,F.S. Corr^ea da Silva // Cognitive Systems Research. 2017.
13.
Exploring technology satisfaction: An approach through the flow experience / C. Calvo-Porral, A. Fa'in~a-Med'in, M. Nieto-Mengotti // Computers in Human Behavior. 2017. 66. P. 400408.
14. The development and evaluation of a survey to measure user engagement / H. L. O'Brien, E. G. Toms // Journal of the american society for information science and technology. 2010. 61. P. 5069.
15.
Measuring emotion: The self-assessment manikin and the semantic differential / M.M. Bradley, P.J. Lang // Journal of Behavior Therapy and Experimental Psychiatry. Vol. 25, Iss. 1. 1994. P. 4959.
16.
The Tale of High Retention, Low Engagement Game / R. Vladimiro //https://ongamesndata.wordpress.com/2015/08/04/engagement-101.
17.
/ . // https://habrahabr.ru/company/mailru/blog/263839/.
18. Maximizers and Satisficers: A Look into Consumer Regret and Dissatisfaction / T. Correia // Poster presented at the McDonough Undergraduate Research Symposium on November 7th, 2013.
19.
Lab Testing Beyond Usability: Challenges and Recommendations for Assessing User Experiences / C. Lallemand,V. Koenig // Journal of usability studies. Vol. 12, Iss. 3. 2017. P. 133154.
20.
Maintaining engagement in long-term interventions with relational agents / Bickmore, T., Schulman, D., and Yin, L. // Applied Artificial Intelligence. 2010. 24, 6. . 648666.
21.
Potentialities of a Face Reading Tool to a Digital Game Evaluation and Development: A Preliminary Study / Y.Trindade, F.Rebelo, P.Noriega // Advances in Ergonomics in Design. 2017. P. 371381.
8. . .
, . , 2, . , , .
1. PANAS (Positive and Negative Affect Schedule)
(1 = ; 2 = ; 3 = ; 4 = ; 5 = ). .
: , , , , , , , , , .
: , , , , , , , , , .
2. Self-Assessment Manikin (SAM) [15].
(1994 .). . 1 , , : 1 , 2 , 3 , . , .
, , , [15].
1. [4].