TEM Guide vs OSLA
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
TEM Guide
This app provides a step-by-step guide for optimizing blood product selection and administration in TEM-directed transfusions. It aims to simplify and standardize the transfusion process for improved patient outcomes.
- Optimized blood product selection
- Step-wise administration guide
- Standardized transfusion process
- Improved patient outcomes
- Accessible transfusion guidelines
Read full descriptionHide full description
TEM Guide was created to optimise blood product selection and time to product administration in TEM directed blood transfusions. It's our hope that by making transfusion guidelines widely accessible and easy to interpret, we can simplify and standardise the transfusion process, leading to improved patient outcomes.
OSLA
Read full descriptionHide full description
OSLA measures the surface area of ocular surface lesions from a photo. Capture a close-up of the eye, mark the iris as an 11.5 mm reference, trace the lesion, and OSLA reports the area in square millimetres. Built for eye care clinicians and researchers who need a consistent, repeatable way to document lesion size in clinic or in the field. How it works: - Capture with the guided camera (near focus lock, flash at capture) or pick an existing photo - Draw around the iris. Its 11.5 mm average diameter sets the real-world scale - Trace the lesion freehand, or tap point by point - Read the area in square millimetres, with maximum and minimum dimensions The saved photo includes the annotations and a small measurement card, so the result can go straight into your records. Everything runs on the device. No account, no upload, no tracking. Photos stay on your phone unless you choose to share them. OSLA is useful for documenting and monitoring conditions such as ocular surface squamous neoplasia, pterygium and conjunctival naevi. It is a documentation aid for clinicians, not a diagnostic device, and it does not replace clinical judgement.
Screenshots
Verdict
The clearest difference is update cadence: OSLA at daily against TEM Guide's every 7 months. TEM Guide's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
TEM Guide ships an update every 7 months, OSLA daily. The most recent releases landed on October 1, 2026 and September 18, 2026 respectively.
| Parameter | TEM Guide | OSLA |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | โ |
| Update frequency | Every 7 months | Daily โ better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | โ |
| Devices | iPhone, iPad, iPod โ better | iPhone, iPod |
| Requires iOS | 12.0 โ better | 15.0 |
| Further details โ not scored | ||
| Size | 17 MB | 19 MB |
| Age rating | 17+ | 17+ |
| Developer | Josh Case | Chun-Huei Liu |
In-app purchases
TEM Guide
No in-app purchases
OSLA
No in-app purchases









