Comparison

ASTRA vs FredSky

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

Head to head
About

ASTRA

Features
Read full description

Look up. Right now, above your ceiling, the International Space Station is racing across the sky at 27,000 km/h. Jupiter is glowing in a constellation you can't name yet. A star whose light left before you were born is arriving at your eyes tonight. ASTRA helps you see all of it. Lift your phone to the sky and the universe unfolds in augmented reality โ€” every star named, every planet placed, every constellation drawn in light. Catch the ISS the moment it passes overhead. Rewind the sky to the night you were born, or fast-forward to the next eclipse. And whenever you wonder "what is that?", just ask โ€” ASTRA's AI astronomer is always listening. No telescope. No expertise. No light-polluted excuses. Just you, your phone, and a universe that's been waiting for you to notice it. Your personal universe starts here. โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€” - AR SKY VIEW โ€” Point your phone up and watch the night sky come alive with names, myths, and motion. - LIVE ISS & SATELLITE TRACKING โ€” Follow the space station and 50+ satellites in real time. Never miss a flyover again. - TIME TRAVEL โ€” Wind the sky to any date. Revisit a meteor shower, preview an eclipse, or find the stars from a moment that mattered. - PLANETS & NAKSHATRAS โ€” Real astronomical positions of the planets and all 27 Nakshatras, precise to the moment. - ASK ASTRA โ€” Your own AI astronomer for black holes, exoplanets, and every "why is the sky like that?" question. - EXPLORE THE COSMOS โ€” Fall into black holes, hunt for exoplanets, and drift through a gallery of breathtaking NASA imagery. โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€”โ€” The sky is the oldest thing humans have ever looked at. ASTRA makes it feel new. Download ASTRA and look up tonight.

About

FredSky

Features
Read full description

FredSky turns your iPhone into a pocket planetarium. Look up, then at your phone, and instantly see what's overhead right now โ€” the stars and constellations, the Moon and planets, and satellites passing over. The all-sky chart is centered on the zenith, like lying back and looking straight up, drawn for your exact location and moment. Raise your phone toward the sky and FredSky switches to a live camera view with the brightest objects labeled where you're aiming. Lower it, and you're back to the chart. โ€ข Live star chart โ€” stars to naked-eye brightness, the classic constellation figures, the planets, the Moon at its true phase, and visible satellite passes. โ€ข Fully offline โ€” the entire star catalog is built in, so the sky is right whether or not you have a signal. โ€ข Point-and-look โ€” hold your phone up to identify the bright star or planet you're looking at. โ€ข Bird songs, too โ€” tap record and FredSky identifies the bird singing nearby, then keeps your sightings as an illustrated life list. โ€ข Red night mode โ€” a one-tap, dark-adapted view that protects your night vision outdoors. No account. No ads. No tracking. Just look up. Positions, phases, and pass times are computed properly โ€” the numbers stay serious, even though the whole app is built to answer one question fast: what is that?

Screenshots

ASTRA4 screens
FredSky3 screens

Verdict

The call

The clearest difference is iOS requirement: ASTRA at 15.1 against FredSky's 17.0. 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.

Scorecard1 real difference ยท 5 level
ASTRA versus FredSky: the parameters behind the verdict, then further details
ParameterASTRAFredSky
PriceFreeFree
Update frequencyEvery 3 weeksโ€”
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPod โ€” betteriPhone
Requires iOS15.1 โ€” better17.0
Further details โ€” not scored
Size43 MB21 MB
Age rating4+4+
DeveloperAkarshit SharmaFrederick Duggan

In-app purchases

None

ASTRA

No in-app purchases

None

FredSky

No in-app purchases

Questions

Is ASTRA free?
ASTRA is free to download, with no in-app purchases.
Is FredSky free?
FredSky is free to download, with no in-app purchases.
Do ASTRA or FredSky have ads?
Neither ASTRA nor FredSky shows ads.

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