Comparison

SDO Viewer vs Airbus A320 Systems Trainer

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

Head to head
About

SDO Viewer

Access and view the latest images from the Solar Dynamics Observatory. Receive push notifications when new images become available, keeping you updated on solar activity.

Highlights
  • Download SDO images
  • Display latest solar images
  • Push notifications for new images
  • Courtesy of NASA/SDO science teams
Features
Read full description

SDO Viewer is a simple application for downloading and displaying the latest images taken by the Solar Dynamics Observatory (SDO). It includes push notifications so you can be notified by a badge on the application when new images are available. SDO Viewer, by the creator of SoHO Viewer. Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.

About

Airbus A320 Systems Trainer

Features
Read full description

This is an Airbus A320 series application covering in depth all the flight system displays screens including the Engine Warning Display. Each system screen has been recreated with high definition images to show every possible parameter for illustration and training purposes. Each symbol, value and schematic part of the systems is explained in full details. All information is derived from official Airbus documentation for you. The Application covers both the A320 CEO and NEO variants. Where differences exist these are clearly shown within the presented study material. Further images of all sub parts within the systems pages are represented also within the data where necessary for better explanation. The system displays covered include: EWD, Cruise, Engine, Bleed, Cabin Pressure, Electrics, Hydraulics, Fuel, APU, Air Conditioning, Doors/Oxygen, Wheels and Flight Controls. See screen shots provided for example screens. This Airbus training application is a must have for any current pilot flying the line and those training on it, including type rating cadets. Designed to access vital information fast and accurately regarding the complex systems data presented in the flight deck. The application is to be used for training purposes only. It is NOT for operational use.

Screenshots

SDO Viewer4 screens
Airbus A320 Systems Trainer4 screens

Verdict

The call

The clearest difference is price: SDO Viewer at Free against Airbus A320 Systems Trainer's $39.99. Airbus A320 Systems Trainer's advantage is update cadence (every 4 days vs every 2 months). On ads, in-app purchases, device support and iOS requirement 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

SDO Viewer is free to download; Airbus A320 Systems Trainer costs $39.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

SDO Viewer ships an update every 2 months, Airbus A320 Systems Trainer every 4 days. The most recent releases landed on October 26, 2026 and October 10, 2026 respectively.

Scorecard2 real differences · 8 level
SDO Viewer versus Airbus A320 Systems Trainer: the parameters behind the verdict, then further details
ParameterSDO ViewerAirbus A320 Systems Trainer
PriceFree — better$39.99
Rating2.7 (6 ratings) — better—
Positive reviews60.0% of reviews—
Number of ratings6 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.013.0
Further details — not scored
Size6 MB56 MB
Age rating4+4+
DeveloperJérôme Diazfaraz sheikh

In-app purchases

None

SDO Viewer

No in-app purchases

None

Airbus A320 Systems Trainer

No in-app purchases

Questions

Is SDO Viewer free?
SDO Viewer is free to download, with no in-app purchases.
Is Airbus A320 Systems Trainer free?
Airbus A320 Systems Trainer costs $39.99, with no in-app purchases.
Do SDO Viewer or Airbus A320 Systems Trainer have ads?
Neither SDO Viewer nor Airbus A320 Systems Trainer shows ads.
Which is updated more often, SDO Viewer or Airbus A320 Systems Trainer?
SDO Viewer ships an update every 2 months, and Airbus A320 Systems Trainer every 4 days. Most recently, SDO Viewer was updated on October 26, 2026 and Airbus A320 Systems Trainer on October 10, 2026.

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