Comparison

Glaucoma Calc vs GLAUC

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

Head to head
About

Glaucoma Calc

Estimate the 5-year risk of glaucoma development in patients with ocular hypertension. This tool simplifies data entry for multiple perimeters and offers quick calculations on Apple Watch.

Highlights
  • Glaucoma risk estimation
  • Ocular hypertension assessment
  • Supports Humphrey, Medmont, Octopus perimeters
  • Single-screen interface
  • Apple Watch app integration
  • Independent Apple Watch functionality
Features
Read full description

Glaucoma Calc can be used to estimate the risk of a patient with ocular hypertension developing glaucoma within 5 years. The ONLY calculator that lets you enter your field measurements YOUR way. Easy, single-screen interface, for fast decision-making in a busy practice. The original OHTS calculator is still the best. Now with easy entry for both eyes, reducing the workload on your brain. It uses the same calculation data as some other online calculators and electronic single-purpose calculators. However, being on your iPhone means you always have it available at all times. It also has the benefit of having full support for all three major perimeters: Humphrey, Medmont and Octopus. No manual conversion is required. And, being an iPhone application, its really simple to use, everything happens on just one screen, enter your five parameters (Age, IOP, C/D ratio, CCT and PSD/PD/LV) and the glaucoma risk is displayed. Now includes an Apple Watch app that lets you calculate your patients' glaucoma risk without leaving your wrist! The Apple Watch app works independently of the iPhone app, you don't even need your iPhone with you for the app to work. A Complication is included to give you quick access to the last calculated risk value, and to allow one-touch access to the app if you are using it regularly. Please remember that this application is purely an aid, and is not a replacement for clinical judgement.

About

GLAUC

Features
Read full description

GLAUC-STRAT calculator is an all-in-one app for both clinicians and patients to assist with categorising and tracking glaucoma progression. Highlight Features: - Clinicians and patients accounts - Allow longitudinal tracking of raw MD loss of each eye - QR code scanning or manual patient search - Colour coded glaucoma progression graph for patients - Additional age range, sex, and ethnicity data collection - and a whole lot more!

Screenshots

Glaucoma Calc2 screens
GLAUC4 screens

Verdict

The call

The clearest difference is price: GLAUC at Free against Glaucoma Calc's $2.99. GLAUC also leads on update cadence (every 3 days vs every 10 months) and iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

GLAUC is free to download; Glaucoma Calc costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Glaucoma Calc ships an update every 10 months, GLAUC every 3 days. The most recent releases landed on September 22, 2026 and September 13, 2026 respectively.

Scorecard3 real differences · 7 level
Glaucoma Calc versus GLAUC: the parameters behind the verdict, then further details
ParameterGlaucoma CalcGLAUC
Price$2.99Free — better
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 10 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Apple WatchiPhone, iPad, iPod
Requires iOS17.015.0 — better
Further details — not scored
Size7 MB48 MB
Age rating4+17+
DeveloperOptical Directions ConsultingChun-Huei Liu

In-app purchases

None

Glaucoma Calc

No in-app purchases

None

GLAUC

No in-app purchases

Questions

Is Glaucoma Calc free?
Glaucoma Calc costs $2.99, with no in-app purchases.
Is GLAUC free?
GLAUC is free to download, with no in-app purchases.
Do Glaucoma Calc or GLAUC have ads?
Neither Glaucoma Calc nor GLAUC shows ads.
Which is updated more often, Glaucoma Calc or GLAUC?
Glaucoma Calc ships an update every 10 months, and GLAUC every 3 days. Most recently, Glaucoma Calc was updated on September 22, 2026 and GLAUC on September 13, 2026.

Other comparisons