Three-Rod Depth Practice
Paid practice app for the three-rod depth test. Three rods in a white peephole: sides fixed, center moves nearer↔farther by thickness/color (no sideways motion). Exam 5 cm/s, practice 2.5 cm/s. Pass if 3-trial average ≤ 2 cm. History, graph, CSV, JA/EN. No ads or IAP. No network. Practice only—does not guarantee official results.
Features
| Web | App free | App Pro | |
|---|---|---|---|
| Three-rod practice (3-trial average) | × | × | ○ |
| Farther/nearer error display | × | × | ○ |
| Peephole + three rods (center depth only) | × | × | ○ |
| Exam 5 cm/s, practice 2.5 cm/s, pass ≤2 cm avg | × | × | ○ |
| History and graph | × | × | ○ |
| CSV export | × | × | ○ |
FAQ
Does this replace the official test?
No. It is for practice only.
Are there ads or in-app purchases?
No. The app is paid up front.
Get the app
Coming soon.
On-device only. No upload of inputs or history. No network (no ads or analytics).
Practice only. Does not guarantee official test results.See a doctor if you have concerns about your vision.No network. Records stay on device.