Comparison

TEM Guide vs OSLA

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

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.

Highlights
  • Optimized blood product selection
  • Step-wise administration guide
  • Standardized transfusion process
  • Improved patient outcomes
  • Accessible transfusion guidelines
Features
Read 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.

About

OSLA

Features
Read 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

TEM Guide4 screens
OSLA4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

TEM Guide ships an update every 7 months, OSLA daily. The most recent releases landed on October 1, 2026 and September 18, 2026 respectively.

Scorecard2 real differences ยท 6 level
TEM Guide versus OSLA: the parameters behind the verdict, then further details
ParameterTEM GuideOSLA
PriceFreeFree
Positive reviews0.0% of reviewsโ€”
Update frequencyEvery 7 monthsDaily โ€” better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeโ€”
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPod
Requires iOS12.0 โ€” better15.0
Further details โ€” not scored
Size17 MB19 MB
Age rating17+17+
DeveloperJosh CaseChun-Huei Liu

In-app purchases

None

TEM Guide

No in-app purchases

None

OSLA

No in-app purchases

Questions

Is TEM Guide free?
TEM Guide is free to download, with no in-app purchases.
Is OSLA free?
OSLA is free to download, with no in-app purchases.
Do TEM Guide or OSLA have ads?
Neither TEM Guide nor OSLA shows ads.
Which is updated more often, TEM Guide or OSLA?
TEM Guide ships an update every 7 months, and OSLA daily. Most recently, TEM Guide was updated on October 1, 2026 and OSLA on September 18, 2026.

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