lens

Lens is an app for teachers to systematically observe, document, and evaluate the behavior and learning progress of individual students over time (educational progress monitoring).

Instead of isolated snapshots, a clear picture of development emerges from numerous short, regular assessments. This makes it easy to track whether support measures are effective. The list and the student's progress are displayed side-by-side on tablets.

ASSESS BEHAVIOR
Define specific target behaviors (e.g., "stays on task" or "disrupts the class") and record progress with quick assessments, just a few seconds per entry: once a day or per hour, including subject and time, even retrospectively. A catalog of pre-defined target behaviors, including all 19 items of the DBR-MIS, and guidelines for formulating them help with setup. Scales from 0–10 to 1–5 up to three-point grids with + / o / −, and custom scales are also available. Days without observation can be marked as "not observable."

EVALUATE PROGRESSIONS
Lens automatically generates trend charts and statistical indicators (including trend, NAP, and Tau-U) from the assessments. Tap the chart to open it in full screen: zoom, scroll, and view each measurement day with date, value, and phase, as well as the trend and average for each phase. Multiple values ​​for a day are displayed as a small curve and can be filtered by category. Diary entries and comments appear directly in the trend, even on days without an assessment: This allows you to see what happened on a day with unusual results.

COMPARE PHASES OR SIMPLY OBSERVE
Mark when a support measure begins. Lens compares the initial situation (baseline) with the support phase and visualizes its impact. A new baseline is also possible (A-B-A-B) to verify whether the effect is truly due to the measure. Lens evaluates each transition individually. During the support phase, Lens asks how the measure was implemented and includes this information in the impact analysis. Those who only want to observe can work without phases.

DIARY: DOCUMENTING OBSERVATIONS
Record daily observations as free text, independent of the ratings. Optionally, record them as voice memos: The dictation is converted directly to text on your device. Only if this isn't possible will Lens ask for permission to use a speech recognition service.

STAYING ON TRACK
34 successes characterize the method, not the result: a reliable baseline, a follow-up, a second person working on the same case. Points and daily streaks show how regularly you are recording.

CLASSES AND TEAM
Keep track of your classes and add multiple children at once. Create your school or join an existing one and share individual cases with colleagues for collaborative documentation. Cases can also be transferred entirely.

INVOLVING PROFESSIONALS
Share a case for therapy or school psychology: The professional can view the progress and evaluation pseudonymously in their browser and send you their assessments. The link requires the consent of the legal guardian(s), is temporary, and can be revoked at any time.

EXPORT DATA
Export the collected data as a CSV file or as a readable log, e.g., for support plans, parent-teacher conferences, or reports.

DATA PROTECTION (GDPR)
The protection of student data is paramount: Data is collected pseudonymously, real names are stored separately, and the app also works offline. Lens can lock itself upon request via fingerprint or screen lock and prompts for confirmation if a child's name appears in the text. School administrators have access to a data protection area with permissions, data processing agreements (DPAs), deletion periods, school rules, and PDF templates (data processing activities, data protection impact assessments, parent information, consent).

WHO IS IT FOR?

Lens is designed for teachers, especially those in special education and remedial education, as well as anyone who wants to monitor behavior and learning development in a structured and evidence-based manner.

Note: Lens is not a medical product and is not intended for medical diagnosis, but for educational observation and documentation of support.