Comparison

iFox Observatory vs Star Archive

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

Head to head
About

iFox Observatory

Features
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iFox Observatory is a middle-school astronomy and space science lab for curious learners and homeschool families. It is not a wallpaper app, a space news app, or an image browser. It is a hands-on astronomy lab where learners can observe, adjust, compare, and explain what they see. The first version includes: • Moon Phase Lab: drag the Moon and watch lunar phases change • Orbit Simulator: adjust speed and distance to explore orbital motion • Eclipse Lab: arrange the Sun, Earth, and Moon to identify eclipse conditions • Sky Compass: learn azimuth, altitude, and observing direction • Light Spectrum Lab: adjust star temperature and observe color and spectrum changes Each lab includes an interactive visual model, user controls, instant feedback, short explanations, and clear learning goals. Core visuals are original procedural graphics and do not rely on external space images. iFox Observatory is part of the MindKey / iFox Family Learning science series. It helps learners do more than look at space. It helps them learn to explain it. No ads. No third-party tracking. Learning progress is stored locally on the device. Privacy Policy: http://mindkey.xyz/index.php/mindkey/privacy-policy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Star Archive

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An app for visual astronomy — observing through a telescope or binoculars with your own eyes. Ā· Sky chart — 5.5 million stars with your own fields of view overlaid, opened from plans, observing and object pages. Ā· Plan and recommend — only what your aperture can show under your site's sky (1,272 objects judged in advance), placed into hour slots, rehearsed on the chart. Ā· Observe and record — step through objects on the chart, check, rate and write; review by night or by object. ā–  A built-in sky chart Ā· About 5.5 million stars to 13th magnitude and 16,000+ deep-sky objects. Drag and pinch anywhere. Ā· Sky as it looks right now (zenith up) or north up — one tap on the compass at top left. Ā· Build fields of view from your telescope, eyepieces and finder and overlay several at once. Plan objects as rings, observed ones checked. Ā· Open the chart from a plan, the observing screen or an object page, and come straight back. ā–  One unbroken night Ā· Plan — added objects settle into hour slots on their own; drag to rearrange. Tap an object for its altitude curve and suggested magnification right there. Ā· Rehearsal — walk the night on the chart before you leave. Course editing handles hour slots, order and start stars on one screen. Ā· Observing — step through objects on the chart, check them off, rate and write notes. Dictate by voice. Ā· Records — enter the night's conditions once, then review by night or by object. Long-term plans spanning months, too. ā–  Data and learning Ā· 2,400+ visual guides — how to find it and what each aperture shows. 4,600+ observing points to rate. Ā· Lists such as Messier, Caldwell, Herschel 400 and 1001, plus your own lists and courses. Ā· Star hopping with 126 routes (using the chart's field-of-view settings); Messier marathon prep and a 110-object night. ā–  Also Night mode (red screen, shake to toggle, automatic after sunset) Ā· six themes Ā· sketch albums Ā· eyepiece-view simulator Ā· tonight's clouds and seeing Ā· real-time planets Ā· spreadsheets in and out, full backup Ā· on a bigger screen at starnotearchive.com Ā· Korean, English and Japanese. Free. No ads, no purchases. No account in the app; make a web account only if you want the website. Records stay on your phone; only what you send goes up to the web (site names visible only to you). With weather on, the forecast point's location is passed to the weather service. The 13th-magnitude star data downloads only when you ask. Made as a hobby by one observer.

Screenshots

iFox Observatory4 screens
Star Archive4 screens

Verdict

The call

iFox Observatory and Star Archive are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

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

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

ScorecardNo meaningful differences
iFox Observatory versus Star Archive: the parameters behind the verdict, then further details
ParameteriFox ObservatoryStar Archive
PriceFreeFree
Update frequency—Every 2 days
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.1 — better16.4
Further details — not scored
Size37 MB174 MB
Age rating4+4+
Developer宁 ēŽ‹Kyungil Myung

In-app purchases

None

iFox Observatory

No in-app purchases

None

Star Archive

No in-app purchases

Questions

Is iFox Observatory free?
iFox Observatory is free to download, with no in-app purchases.
Is Star Archive free?
Star Archive is free to download, with no in-app purchases.
Do iFox Observatory or Star Archive have ads?
Neither iFox Observatory nor Star Archive shows ads.

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