# Formulus > Offline data collection app: forms, GPS, photos & sync for field teams Canonical page: [https://chrome-stats.com/d/org.opendataensemble.formulus](https://chrome-stats.com/d/org.opendataensemble.formulus) ## Overview - **ID:** `org.opendataensemble.formulus` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** ode - **Category:** TOOLS - **Downloads:** 20 - **Version:** 1.4.0 - **Last updated:** 2026-10-02 - **First published:** 2026-09-26 - **Publisher country:** UG - **Size:** 49 MB - **Data as of:** 2026-10-29 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=org.opendataensemble.formulus) - **Website:** [https://opendataensemble.org/](https://opendataensemble.org/) - **Privacy policy:** [https://opendataensemble.org/docs/legal/formulus-privacy-policy](https://opendataensemble.org/docs/legal/formulus-privacy-policy) ## Description Formulus is an offline data collection app for field teams. Capture surveys and structured forms with no internet connection, then sync securely to a Synkronus server that your organisation controls. It is part of Open Data Ensemble (ODE), an open-source platform for mobile data collection.

WHY FIELD TEAMS USE FORMULUS
- Collect data offline: every form, observation, photo and recording is saved on your device
- Sync when you are back online, manually or automatically
- Run many projects in one app: forms and custom apps are delivered from your server, so you do not wait for a new store release
- Free and open source, with no central cloud: your data goes only to your own server

DATA COLLECTION FEATURES
- Survey and form entry: text, numbers, dates, dropdowns and multiple choice
- GPS location on every observation
- Photo and video capture
- Audio recording
- QR code scanning
- File attachments and signatures
- Approximate dates for uncertain or historical records
- Sub-forms for households, members and other repeating records

SYNC AND DATA SECURITY
- Sign in with your username and password
- HTTPS sync of observations and attachments
- Track every upload live, with clear synced and pending status
- Switch between projects and servers with multiple profiles

CUSTOM APPS ON THE HOME TAB
Load a tailored web-based workflow with your own branding and navigation. It works with the same forms, storage and sync engine.

BUILT FOR DEMANDING ENVIRONMENTS
Formulus suits household surveys, health surveys, monitoring and evaluation, environmental and biodiversity monitoring, humanitarian programmes, public sector projects and academic research, especially where connectivity is limited or unreliable.

MADE TO FIT YOUR TEAM
- Light, dark and system themes
- Choose your app language in Settings
- Simple tabs for Home, Forms, Observations, Sync and More

GETTING STARTED
Formulus connects to a Synkronus server for login, form distribution and synchronisation. Your team runs its own server, and setup guides are on our website.

OPEN SOURCE
Formulus is part of the Open Data Ensemble ecosystem: interoperable, standards-based tools for decentralised data collection. Contributions and feedback are welcome.

Documentation: https://opendataensemble.org
Privacy policy: https://opendataensemble.org/docs/legal/formulus-privacy-policy
Source code: https://github.com/OpenDataEnsemble/ode
Community forum: https://forum.opendataensemble.org
Contact: hello@opendataensemble.org ## Rankings - #2,769,049 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_COARSE_LOCATION` - `android.permission.ACCESS_FINE_LOCATION` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.ACCESS_NOTIFICATION_POLICY` - `android.permission.CAMERA` - `android.permission.FOREGROUND_SERVICE` - `android.permission.FOREGROUND_SERVICE_DATA_SYNC` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.READ_EXTERNAL_STORAGE` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.RECORD_AUDIO` - `android.permission.SCHEDULE_EXACT_ALARM` - `android.permission.USE_BIOMETRIC` - `android.permission.USE_FINGERPRINT` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `android.permission.WRITE_EXTERNAL_STORAGE` - `com.android.vending.CHECK_LICENSE` - `org.opendataensemble.formulus.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [FormilX](https://chrome-stats.com/d/com.formilx.app) — 9 users - [EasyData Forms](https://chrome-stats.com/d/com.umnis.collect.android.meda) — 37 users - [FieldCollect](https://chrome-stats.com/d/com.fieldcollect.app) — 2 users - [Dataformz](https://chrome-stats.com/d/com.dataformz.collect) — 45 users - [FormShare Collect](https://chrome-stats.com/d/com.qlands.collect.android) — 3 users - [FieldFlow Offline](https://chrome-stats.com/d/eu.scicloud.fieldflow) — 34 users - [Formly: Mobile Forms & Surveys](https://chrome-stats.com/d/com.formly.app) — 290 users - [FieldCollect](https://chrome-stats.com/d/com.newtelapps.fieldcollect) — 11 users - [Off Collect](https://chrome-stats.com/d/com.khuzitech.offcollect) — 69 users - [FieldCon](https://chrome-stats.com/d/com.kourelas.FieldCon) - [Datalign Collect](https://chrome-stats.com/d/combase.datalign.collect) — 1 users - [Colectiva App](https://chrome-stats.com/d/com.colectivaapp) — 362 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/org.opendataensemble.formulus)