{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T04:18:59Z","timestamp":1784002739119,"version":"3.55.0"},"reference-count":23,"publisher":"MDPI AG","issue":"18","license":[{"start":{"date-parts":[[2022,9,7]],"date-time":"2022-09-07T00:00:00Z","timestamp":1662508800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"German Science Foundation","award":["DFG RA 3340\/3-1"],"award-info":[{"award-number":["DFG RA 3340\/3-1"]}]},{"name":"German Diabetic Association","award":["DFG RA 3340\/3-1"],"award-info":[{"award-number":["DFG RA 3340\/3-1"]}]},{"name":"Adam Heller Funding","award":["DFG RA 3340\/3-1"],"award-info":[{"award-number":["DFG RA 3340\/3-1"]}]},{"name":"European Association for the Study of Diabetes","award":["DFG RA 3340\/3-1"],"award-info":[{"award-number":["DFG RA 3340\/3-1"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nutrients"],"abstract":"<jats:p>Accurate dietary analysis of energy, nutrient intake, and meal timing in human studies using traditional dietary assessment methods (e.g., food records) is challenging and time-consuming. The widespread use of smartphones, tablets, and nutrition applications (apps) can overcome some of these problems. The objective of this study was to evaluate the validity of an FDDB smartphone app and food database compared with PRODI\u00ae\u2014a professional platform for nutritional counselling using the German Nutrient Database. Dietary records were collected from 10 subjects participating in the crossover intermittent fasting trial for 2 weeks at baseline and during the eating timeframe of 8 h (early or late in the course of the day). The FDDB app and database enabled a quicker and less sophisticated analysis of food composition and timing than the PRODI\u00ae software. Good agreement between the methods was found for energy and macronutrient intakes, while the FDDB data on most micronutrients and saturated\/unsaturated fat intake were unreliable. In contrast to PRODI\u00ae, FDDB provided effective assessment of timely compliance, making it a promising tool for chrononutritional studies. Thus, the FDDB app is comparable to the traditional PRODI\u00ae dietary assessment method, and can be effectively used in human dietary trials and medical practice for specific goals.<\/jats:p>","DOI":"10.3390\/nu14183697","type":"journal-article","created":{"date-parts":[[2022,9,8]],"date-time":"2022-09-08T01:40:13Z","timestamp":1662601213000},"page":"3697","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":20,"title":["Validation of a Smartphone Application for the Assessment of Dietary Compliance in an Intermittent Fasting Trial"],"prefix":"10.3390","volume":"14","author":[{"given":"Isabella","family":"Baum Martinez","sequence":"first","affiliation":[{"name":"Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany"},{"name":"Institute of Nutritional Science, University of Potsdam, 14558 Nuthetal, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Beeke","family":"Peters","sequence":"additional","affiliation":[{"name":"Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany"},{"name":"Institute of Human Nutrition and Food Science, Faculty of Agriculture and Food Sciences, Christian-Albrecht-University Kiel, 24118 Kiel, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia","family":"Schwarz","sequence":"additional","affiliation":[{"name":"Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany"},{"name":"Institute of Agricultural and Nutritional Sciences, Martin Luther University Halle-Wittenberg, 06120 Halle (Saale), Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1433-8726","authenticated-orcid":false,"given":"Bettina","family":"Schuppelius","sequence":"additional","affiliation":[{"name":"Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany"},{"name":"Institute of Nutritional Science, University of Potsdam, 14558 Nuthetal, Germany"},{"name":"Charit\u00e9-Universit\u00e4tsmedizin Berlin, Corporate Member of Freie Universit\u00e4t Berlin, Humboldt-Universit\u00e4t zu Berlin, and Berlin Institute of Health, Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, 12203 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nico","family":"Steckhan","sequence":"additional","affiliation":[{"name":"Digital Health\u2014Connected Healthcare, Hasso Plattner Institute, University of Potsdam, 14482 Potsdam, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniela A.","family":"Koppold-Liebscher","sequence":"additional","affiliation":[{"name":"Institute of Social Medicine, Epidemiology and Health Economics, Charit\u00e9-Universit\u00e4tsmedizin Berlin, Corporate Member of Freie Universit\u00e4t Berlin, Humboldt-Universit\u00e4t zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany"},{"name":"Department of Internal and Integrative Medicine, Immanuel Hospital Berlin, 14109 Berlin, Germany"},{"name":"Department of Pediatrics, Division of Oncology and Hematology, Charit\u00e9-Universit\u00e4tsmedizin Berlin, Corporate Member of Freie Universit\u00e4t Berlin, Humboldt-Universit\u00e4t zu Berlin, and Berlin Institute of Health, 13353 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreas","family":"Michalsen","sequence":"additional","affiliation":[{"name":"Institute of Social Medicine, Epidemiology and Health Economics, Charit\u00e9-Universit\u00e4tsmedizin Berlin, Corporate Member of Freie Universit\u00e4t Berlin, Humboldt-Universit\u00e4t zu Berlin, and Berlin Institute of Health, 10117 Berlin, Germany"},{"name":"Department of Internal and Integrative Medicine, Immanuel Hospital Berlin, 14109 Berlin, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3583-8546","authenticated-orcid":false,"given":"Olga","family":"Pivovarova-Ramich","sequence":"additional","affiliation":[{"name":"Research Group Molecular Nutritional Medicine, Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany"},{"name":"Charit\u00e9-Universit\u00e4tsmedizin Berlin, Corporate Member of Freie Universit\u00e4t Berlin, Humboldt-Universit\u00e4t zu Berlin, and Berlin Institute of Health, Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, 12203 Berlin, Germany"},{"name":"German Center for Diabetes Research (DZD), 85764 Neuherberg, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,9,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"539","DOI":"10.1017\/S0007114512001353","article-title":"\u2018My Meal Mate\u2019 (MMM): Validation of the diet measures captured on a smartphone application to facilitate weight loss","volume":"109","author":"Carter","year":"2013","journal-title":"Br. J. Nutr."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1016\/j.jand.2014.07.036","article-title":"Self-monitoring of dietary intake by young women: Online food records completed on computer or smartphone are as accurate as paper-based food records but more acceptable","volume":"115","author":"Hutchesson","year":"2015","journal-title":"J. Acad. Nutr. Diet."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1257","DOI":"10.1016\/j.nut.2014.02.020","article-title":"Feasibility and validity of mobile phones to assess dietary intake","volume":"30","author":"Sharp","year":"2014","journal-title":"Nutrition"},{"key":"ref_4","unstructured":"Smartphone Users by Country Worldwide 2021 (2022, July 04). Published by Statista Research Department. 11 August 2022. Available online: https:\/\/www.statista.com\/statistics\/748053\/worldwide-top-countries-smartphone-users\/."},{"key":"ref_5","unstructured":"Share of Smartphone Users in Germany 2021, by Age Group (2022, July 04). Published by Evgenia Koptyug, 14 December 2021. Available online: https:\/\/www.statista.com\/statistics\/469969\/share-of-smartphone-users-in-germany-by-age-group\/."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"683140","DOI":"10.3389\/fendo.2021.683140","article-title":"Time Restricted Eating: A Dietary Strategy to Prevent and Treat Metabolic Disturbances","volume":"12","author":"Schuppelius","year":"2021","journal-title":"Front. Endocrinol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1038\/s41574-022-00638-x","article-title":"Clinical application of intermittent fasting for weight loss: Progress and future directions","volume":"18","author":"Varady","year":"2022","journal-title":"Nat. Rev. Endocrinol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"789","DOI":"10.1016\/j.cmet.2015.09.005","article-title":"A Smartphone App Reveals Erratic Diurnal Eating Patterns in Humans that Can Be Modulated for Health Benefits","volume":"22","author":"Gill","year":"2015","journal-title":"Cell Metab."},{"key":"ref_9","first-page":"80","article-title":"Nutrition apps: Quality and limitations. An explorative investigation on the basis of selected apps","volume":"64","author":"Holzmann","year":"2017","journal-title":"Ern\u00e4hrungs Umsch."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"765543","DOI":"10.3389\/fnut.2021.765543","article-title":"Effects of Early vs. Late Time-Restricted Eating on Cardiometabolic Health, Inflammation, and Sleep in Overweight and Obese Women: A Study Protocol for the ChronoFast Trial","volume":"8","author":"Peters","year":"2021","journal-title":"Front. Nutr."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"307","DOI":"10.1016\/S0140-6736(86)90837-8","article-title":"Statistical methods for assessing agreement between two methods of clinical measurement","volume":"1","author":"Bland","year":"1986","journal-title":"Lancet"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"571","DOI":"10.1080\/10543400701329422","article-title":"Agreement between methods of measurement with multiple observations per individual","volume":"17","author":"Bland","year":"2007","journal-title":"J. Biopharm. Stat."},{"key":"ref_13","doi-asserted-by":"crossref","unstructured":"Isenmann, E., Dissemond, J., and Geisler, S. (2021). The Effects of a Macronutrient-Based Diet and Time-Restricted Feeding (16:8) on Body Composition in Physically Active Individuals-A 14-Week Randomised Controlled Trial. Nutrients, 13.","DOI":"10.3390\/nu13093122"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"e98","DOI":"10.2196\/mhealth.4613","article-title":"Electronic Dietary Intake Assessment (e-DIA): Comparison of a Mobile Phone Digital Entry App for Dietary Data Collection With 24-Hour Dietary Recalls","volume":"3","author":"Rangan","year":"2015","journal-title":"JMIR Mhealth Uhealth"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"5","DOI":"10.1186\/s12937-018-0315-4","article-title":"Feasibility of a commercial smartphone application for dietary assessment in epidemiological research and comparison with 24-h dietary recalls","volume":"17","author":"Ambrosini","year":"2018","journal-title":"Nutr. J."},{"key":"ref_16","first-page":"91","article-title":"Comparison of a Web-Based Dietary Assessment Tool with Software for the Evaluation of Dietary Records","volume":"54","author":"Benedik","year":"2015","journal-title":"Zdr. Varst."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"e21","DOI":"10.2196\/jmir.3744","article-title":"Validity of electronic diet recording nutrient estimates compared to dietitian analysis of diet records: Randomized controlled trial","volume":"17","author":"Raatz","year":"2015","journal-title":"J. Med. Internet Res."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Ahmed, M., Mandic, I., Lou, W., Goodman, L., Jacobs, I., and L\u2019Abbe, M.R. (2017). Validation of a Tablet Application for Assessing Dietary Intakes Compared with the Measured Food Intake\/Food Waste Method in Military Personnel Consuming Field Rations. Nutrients, 9.","DOI":"10.3390\/nu9030200"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"e16953","DOI":"10.2196\/16953","article-title":"Validity and Usability of a Smartphone Image-Based Dietary Assessment App Compared to 3-Day Food Diaries in Assessing Dietary Intake Among Canadian Adults: Randomized Controlled Trial","volume":"8","author":"Ji","year":"2020","journal-title":"JMIR Mhealth Uhealth"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"895S","DOI":"10.1093\/jn\/133.3.895S","article-title":"Markers of the validity of reported energy intake","volume":"133","author":"Livingstone","year":"2003","journal-title":"J. Nutr."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"1187","DOI":"10.1093\/ije\/dys105","article-title":"Review and evaluation of innovative technologies for measuring diet in nutritional epidemiology","volume":"41","author":"Illner","year":"2012","journal-title":"Int. J. Epidemiol."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"92","DOI":"10.1016\/j.cmet.2019.11.004","article-title":"Ten-Hour Time-Restricted Eating Reduces Weight, Blood Pressure, and Atherogenic Lipids in Patients with Metabolic Syndrome","volume":"31","author":"Wilkinson","year":"2020","journal-title":"Cell Metab."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"583","DOI":"10.1016\/j.jada.2011.01.009","article-title":"Using a personal digital assistant for self-monitoring influences diet quality in comparison to a standard paper record among overweight\/obese adults","volume":"111","author":"Acharya","year":"2011","journal-title":"J. Am. Diet. Assoc."}],"container-title":["Nutrients"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-6643\/14\/18\/3697\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:24:51Z","timestamp":1760142291000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-6643\/14\/18\/3697"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,9,7]]},"references-count":23,"journal-issue":{"issue":"18","published-online":{"date-parts":[[2022,9]]}},"alternative-id":["nu14183697"],"URL":"https:\/\/doi.org\/10.3390\/nu14183697","relation":{},"ISSN":["2072-6643"],"issn-type":[{"value":"2072-6643","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,9,7]]}}}