Comparison

Cesium Developer Conference vs PDExact

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

Head to head
About

Cesium Developer Conference

Features
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Download the Cesium Developer Conference mobile app to get the best experience onsite! Stay informed, connected, and engagedβ€”all from the palm of your hand. Key features: - NEW! Appointment setting options to meet with Cesium experts to ask a deep technical question, explore a new workflow, or see the latest features in action. - Visit the ionosphere! It is designed place where attendees can connect directly with the engineers and product teams building the tools they use every day. - Personalized agenda: Browse sessions, bookmark your favorites, and create a customized schedule. - Real-Time updates: get instant notifications on important announcements, schedule changes, and event news. - Interactive maps: Navigate the venue effortlessly and find key locations with ease. The Cesium Developer Conference mobile app ensures you stay organized and make meaningful connections. Download now and elevate your conference experience.

About

PDExact

Features
Read full description

Ordering glasses online and the form asks for your PD? PDExact measures your pupillary distance from a photo, using any bank or credit card as the ruler. Take a selfie with the front camera (or pick a photo) while holding a standard card flat against your forehead. Then place the handles: the two ends of the card, the centre of each pupil, and your nose bridge. PDExact converts pixels to millimeters from the card's known 85.60 mm length and shows your PD and both mono PDs live. β€’ PHOTO + CARD SCALE β€” the standard ID-1 card size (a bank or credit card) sets the scale right in the photo, so no screen calibration is needed. β€’ AUTO-PLACED PUPILS β€” on-device face detection pre-places the pupil and nose-bridge handles when it can; you can always drag them. β€’ MAGNIFIER β€” hold any handle to see a zoomed view with a crosshair for precise placement. β€’ REAL MONO PD β€” right and left mono PD are measured from your nose bridge to each pupil, not just half of the total. β€’ RESULT PDF β€” a one-page PDF with your PD, both mono values, the date and the disclaimer, ready to share or save to Files, in the app's language. For the best reading, keep the card flat against your forehead, face the camera straight on and hold your head level. Not a medical device: PDExact is a shopping aid only. It does not diagnose conditions, replace an eye exam, or provide a prescription. For clinical PD or medical advice, see an eye care professional. Everything stays on your iPhone. Nothing is uploaded and no account is needed. Measuring is free; saving a result PDF includes 3 free exports. A one-time $4.99 purchase unlocks unlimited result PDFs. No subscription, no ads. Questions: overlapmarr@gmail.com

Screenshots

Cesium Developer Conference3 screens
PDExact3 screens

Verdict

The call

The clearest difference is in-app purchases: Cesium Developer Conference at none against PDExact's 1. PDExact's advantage is update cadence (every 6 days vs every 12 months). On price, ads, device support and iOS requirement there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. PDExact sells 1 one-off in-app purchase. Cesium Developer Conference asks for nothing beyond the download.

UpkeepUpdate frequency

Cesium Developer Conference ships an update every 12 months, PDExact every 6 days. The most recent releases landed on October 4, 2026 and October 15, 2026 respectively.

Scorecard2 real differences Β· 4 level
Cesium Developer Conference versus PDExact: the parameters behind the verdict, then further details
ParameterCesium Developer ConferencePDExact
PriceFreeFree
Update frequencyEvery 12 monthsEvery 6 days β€” better
AdsNoNo
In-app purchasesNo β€” betterYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS17.016.0 β€” better
Further details β€” not scored
Size69 MB3 MB
Age rating4+4+
DeveloperBentley Systems, Inc.Jhomar Maravillas

In-app purchases

None

Cesium Developer Conference

No in-app purchases

1 purchases

PDExact

One-time1
  • Unlock Unlimited$4.99

Questions

Is Cesium Developer Conference free?
Cesium Developer Conference is free to download, with no in-app purchases.
Is PDExact free?
PDExact is free to download, with in-app purchases available.
Do Cesium Developer Conference or PDExact have ads?
Neither Cesium Developer Conference nor PDExact shows ads.
Which is updated more often, Cesium Developer Conference or PDExact?
Cesium Developer Conference ships an update every 12 months, and PDExact every 6 days. Most recently, Cesium Developer Conference was updated on October 4, 2026 and PDExact on October 15, 2026.

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